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| purl | pkg:deb/debian/apache2@2.4.66-1~deb12u1?distro=trixie |
| Vulnerability | Summary | Fixed by |
|---|---|---|
| This package is not known to be affected by vulnerabilities. | ||
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-112d-h2a5-xbc4 | A memory leak in mod_ssl allows a remote denial of service attack against an SSL-enabled server by sending plain HTTP requests to the SSL port. |
CVE-2004-0113
|
| VCID-115r-fep2-fyfm | A flaw was found in the mod_proxy_balancer module. On sites where mod_proxy_balancer is enabled, an authorized user could send a carefully crafted request that would cause the Apache child process handling that request to crash. This could lead to a denial of service if using a threaded Multi-Processing Module. |
CVE-2007-6422
|
| VCID-1189-ej89-hybs | mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port. |
CVE-2017-3169
|
| VCID-17hy-4ppt-xyhw | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted SessionHeader sent by an origin server could cause a heap overflow |
CVE-2021-26691
|
| VCID-1bv2-mkj8-ubaz | mod_rewrite does not filter terminal escape sequences from logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences. |
CVE-2013-1862
|
| VCID-1d24-sy5z-jfhh | HTTP trailers could be used to replace HTTP headers late during request processing, potentially undoing or otherwise confusing modules that examined or modified request headers earlier. This fix adds the "MergeTrailers" directive to restore legacy behavior. |
CVE-2013-5704
|
| VCID-1nh6-77uc-xbak | A bug was found in the mod_cache module. On sites where caching is enabled, a remote attacker could send a carefully crafted request that would cause the Apache child process handling that request to crash. This could lead to a denial of service if using a threaded Multi-Processing Module. |
CVE-2007-1863
|
| VCID-1v86-mmdn-z3fk | A bug in the optional renegotiation code in mod_ssl included with Apache httpd can cause cipher suite restrictions to be ignored. This is triggered if optional renegotiation is used (SSLOptions +OptRenegotiate) along with verification of client certificates and a change to the cipher suite over the renegotiation. |
CVE-2003-0192
|
| VCID-1wh1-9ccd-s7hq | The default configuration of the apache2 package in Debian GNU/Linux squeeze before 2.2.16-6+squeeze7, wheezy before 2.2.22-4, and sid before 2.2.22-4, when mod_php or mod_rivet is used, provides example scripts under the doc/ URI, which might allow local users to conduct cross-site scripting (XSS) attacks, gain privileges, or obtain sensitive information via vectors involving localhost HTTP requests to the Apache HTTP Server. |
CVE-2012-0216
|
| VCID-1zk6-7wv2-ukcz | A resource consumption flaw was found in mod_deflate. If request body decompression was configured (using the "DEFLATE" input filter), a remote attacker could cause the server to consume significant memory and/or CPU resources. The use of request body decompression is not a common configuration. |
CVE-2014-0118
|
| VCID-2261-sdn2-zbbu | A flaw was found in the mod_proxy_balancer module. On sites where mod_proxy_balancer is enabled, a cross-site scripting attack against an authorized user is possible. |
CVE-2007-6421
|
| VCID-27q1-umct-1qe3 | Unspecified vulnerability in mod_proxy_balancer for Apache HTTP Server 2.2.x before 2.2.7-dev, when running on Windows, allows remote attackers to trigger memory corruption via a long URL. NOTE: the vendor could not reproduce this issue |
CVE-2007-6423
|
| VCID-2d8p-bbc1-hkfa | Apache HTTP Server 2.4.65 and earlier with Server Side Includes (SSI) enabled and mod_cgid (but not mod_cgi) passes the shell-escaped query string to #exec cmd="..." directives. This issue affects Apache HTTP Server before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
CVE-2025-58098
|
| VCID-2e6w-fs4j-17g9 | HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion. |
CVE-2024-27316
|
| VCID-2nmh-7tfa-zyb2 | Prior to Apache HTTP release 2.4.25, mod_sessioncrypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC. An authentication tag (SipHash MAC) is now added to prevent such attacks. |
CVE-2016-0736
|
| VCID-2xc4-7zg9-y7fw | HTTP_PROXY is a well-defined environment variable in a CGI process, which collided with a number of libraries which failed to avoid colliding with this CGI namespace. A mitigation is provided for the httpd CGI environment to avoid populating the "HTTP_PROXY" variable from a "Proxy:" header, which has never been registered by IANA. This workaround and patch are documented in the ASF Advisory at asf-httpoxy-response.txt and incorporated in the 2.4.25 and 2.2.32 releases. Note: This is not assigned an httpd severity, as it is a defect in other software which overloaded well-established CGI environment variables, and does not reflect an error in HTTP server software. |
CVE-2016-5387
|
| VCID-31wm-xbg1-c7ds | A flaw in Apache 2.0.51 (only) broke the merging of the Satisfy directive which could result in access being granted to resources despite any configured authentication |
CVE-2004-0811
|
| VCID-35pg-v3ae-8kct | The default configuration of Apache 2.0.40, as shipped with Red Hat Linux 9.0, allows remote attackers to list directory contents, even if auto indexing is turned off and there is a default web page configured, via a GET request containing a double slash (//). |
CVE-2003-1138
|
| VCID-3ay7-bwah-2yd1 | HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response. This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue. Users are recommended to upgrade to version 2.4.64, which fixes this issue. |
CVE-2024-42516
|
| VCID-3djp-gq4c-1fa9 | A limited cross-site scripting issue was reported affecting the mod_proxy error page. An attacker could cause the link on the error page to be malfomed and instead point to a page of their choice. This would only be exploitable where a server was set up with proxying enabled but was misconfigured in such a way that the Proxy Error page was displayed. We have taken this opportunity to also remove request data from many other in-built error messages. Note however this issue did not affect them directly and their output was already escaped to prevent cross-site scripting attacks. |
CVE-2019-10092
|
| VCID-3m9y-maes-5ycp | Apache does not filter terminal escape sequences from error logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences. |
CVE-2003-0020
|
| VCID-3se4-9vwa-1qbt | suexec in Apache HTTP Server (httpd) 2.2.3 uses a partial comparison for verifying whether the current directory is within the document root, which might allow local users to perform unauthorized operations on incorrect directories, as demonstrated using "html_backup" and "htmleditor" under an "html" directory. NOTE: the researcher, who is reliable, claims that the vendor disputes the issue because "the attacks described rely on an insecure server configuration" in which the user "has write access to the document root." |
CVE-2007-1742
|
| VCID-3wbg-bxvj-1kca | An issue has been discovered in the mod_ssl module when configured to use the "SSLCipherSuite" directive in directory or location context. If a particular location context has been configured to require a specific set of cipher suites, then a client will be able to access that location using any cipher suite allowed by the virtual host configuration. |
CVE-2004-0885
|
| VCID-3wuk-hwg1-6fa6 | A design error in the "ap_some_auth_required" function renders the API unusuable in httpd 2.4.x. In particular the API is documented to answering if the request required authentication but only answers if there are Require lines in the applicable configuration. Since 2.4.x Require lines are used for authorization as well and can appear in configurations even when no authentication is required and the request is entirely unrestricted. This could lead to modules using this API to allow access when they should otherwise not do so. API users should use the new ap_some_authn_required API added in 2.4.16 instead. |
CVE-2015-3185
|
| VCID-3y3e-apkh-5qcq | In some cases warning messages could get returned to end users in addition to being recorded in the error log. This could reveal the path to a CGI script for example, a minor security exposure. |
CVE-2002-1592
|
| VCID-4c3m-m6ku-kbhq | HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client. |
CVE-2023-27522
GHSA-vcph-37mh-fqrh |
| VCID-4d3t-es7p-9qhn | Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds in ap_strcmp_match() when provided with an extremely large input buffer. While no code distributed with the server can be coerced into such a call, third-party modules or lua scripts that use ap_strcmp_match() may hypothetically be affected. |
CVE-2022-28615
|
| VCID-4jfa-3r1g-m7h8 | SSRF in Apache HTTP Server on Windows with mod_rewrite in server/vhost context, allows to potentially leak NTML hashes to a malicious server via SSRF and malicious requests. Users are recommended to upgrade to version 2.4.62 which fixes this issue. |
CVE-2024-40898
|
| VCID-4mqa-bkha-kbaj | security update |
CVE-2012-4929
|
| VCID-4sss-a8ne-kqbc | When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. A server that never enabled the h2 protocol or that only enabled it for https: and did not configure the "H2Upgrade on" is unaffected by this. |
CVE-2019-0197
|
| VCID-53da-z9gn-n7f2 | A flaw was found in mod_log_config. If the '%{cookiename}C' log format string is in use, a remote attacker could send a specific cookie causing a crash. This crash would only be a denial of service if using a threaded MPM. |
CVE-2012-0021
|
| VCID-56kt-8bg6-zbcj | A flaw was found in the handling of requests by mod_cache (2.2) and mod_dav (2.0 and 2.2). A malicious remote attacker could send a carefully crafted request and cause a httpd child process to crash. This crash would only be a denial of service if using the worker MPM. This issue is further mitigated as mod_dav is only affected by requests that are most likely to be authenticated, and mod_cache is only affected if the uncommon "CacheIgnoreURLSessionIdentifiers" directive, introduced in version 2.2.14, is used. |
CVE-2010-1452
|
| VCID-5bej-9h7w-33c8 | When an unrecognized HTTP Method is given in an <Limit {method}> directive in an .htaccess file, and that .htaccess file is processed by the corresponding request, the global methods table is corrupted in the current worker process, resulting in erratic behaviour. This behavior may be avoided by listing all unusual HTTP Methods in a global httpd.conf RegisterHttpMethod directive in httpd release 2.4.25 and later. To permit other .htaccess directives while denying the <Limit > directive, see the AllowOverrideList directive. Source code patch (2.4) is at; CVE-2017-9798-patch-2.4.patch Source code patch (2.2) is at; CVE-2017-9798-patch-2.2.patch Note 2.2 is end-of-life, no further release with this fix is planned. Users are encouraged to migrate to 2.4.28 or later for this and other fixes. |
CVE-2017-9798
|
| VCID-5crp-xumw-v7gb | A NULL pointer dereference was found in mod_cache. A malicious HTTP server could cause a crash in a caching forward proxy configuration. (Note that this vulnerability was fixed in the 2.4.7 release, but the security impact was not disclosed at the time of the release.) |
CVE-2013-4352
|
| VCID-5qkp-3w54-j3a5 | A flaw in mod_session_dbd caused it to proceed with save operations for a session without considering the dirty flag and the requirement for a new session ID. |
CVE-2013-2249
|
| VCID-5xrt-1n1q-4bey | In Apache HTTP Server versions 2.4.0 to 2.4.41 some mod_rewrite configurations vulnerable to open redirect. |
CVE-2020-1927
|
| VCID-5yez-d5nj-q7eq | An integer overflow flaw was found which, when the mod_setenvif module is enabled, could allow local users to gain privileges via a .htaccess file. |
CVE-2011-3607
|
| VCID-616c-9x7y-5bby | mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script. |
CVE-2002-1850
|
| VCID-66k7-maf9-dfcd | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow |
CVE-2020-35452
|
| VCID-699n-tvdd-qkgj | The recall_headers function in mod_mem_cache in Apache 2.2.4 did not properly copy all levels of header data, which can cause Apache to return HTTP headers containing previously used data, which could be used by remote attackers to obtain potentially sensitive information. |
CVE-2007-1862
|
| VCID-6b7y-562y-suce | Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. This issue affected mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released. |
CVE-2021-31618
|
| VCID-6bez-sgg8-cbbq | Possible XSS for sites which use mod_negotiation and allow untrusted uploads to locations which have MultiViews enabled. Note: This issue is also known as CVE-2008-0455. |
CVE-2012-2687
|
| VCID-6d43-sjqw-tbbp | A flaw was found in the mod_proxy_ftp module. In a reverse proxy configuration, a remote attacker could use this flaw to bypass intended access restrictions by creating a carefully-crafted HTTP Authorization header, allowing the attacker to send arbitrary commands to the FTP server. |
CVE-2009-3095
|
| VCID-6pzx-1e5t-xbes | XML parsing code in mod_dav incorrectly calculates the end of the string when removing leading spaces and places a NUL character outside the buffer, causing random crashes. This XML parsing code is only used with DAV provider modules that support DeltaV, of which the only publicly released provider is mod_dav_svn. |
CVE-2013-6438
|
| VCID-6qk8-1cj1-4fh7 | Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions. |
CVE-2022-36760
|
| VCID-6tgh-b4td-63f5 | Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
CVE-2024-39573
|
| VCID-6vxq-uxxw-ybeh | Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparision when determining the method of a request and thus process the request incorrectly. |
CVE-2019-0196
|
| VCID-6vze-zk58-7yep | A flaw was found when mod_proxy_ajp is used together with mod_proxy_balancer. Given a specific configuration, a remote attacker could send certain malformed HTTP requests, putting a backend server into an error state until the retry timeout expired. This could lead to a temporary denial of service. |
CVE-2011-3348
|
| VCID-741u-yuv6-nkcy | Multiple vulnerabilities have been discovered in Apache. |
CVE-2008-0455
|
| VCID-76s2-26cr-syd1 | An issue was discovered in the mod_dav module which could be triggered for a location where WebDAV authoring access has been configured. A malicious remote client which is authorized to use the LOCK method could force an httpd child process to crash by sending a particular sequence of LOCK requests. This issue does not allow execution of arbitrary code. and will only result in a denial of service where a threaded process model is in use. |
CVE-2004-0809
|
| VCID-7krj-8vat-3ydy | A flaw was found with within mod_isapi which would attempt to unload the ISAPI dll when it encountered various error states. This could leave the callbacks in an undefined state and result in a segfault. On Windows platforms using mod_isapi, a remote attacker could send a malicious request to trigger this issue, and as win32 MPM runs only one process, this would result in a denial of service, and potentially allow arbitrary code execution. |
CVE-2010-0425
|
| VCID-7u2r-egf2-vfhx | By sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol. |
CVE-2018-17189
|
| VCID-7vfk-1dwm-xbbt | When mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients. |
CVE-2019-10097
|
| VCID-7vjg-vetg-p7f6 | A bug exists in the way mod_ssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or later, due to an interaction in changes to handling of renegotiation attempts. |
CVE-2019-0190
|
| VCID-7zer-dq7c-8ffq | For configurations enabling support for HTTP/2, SSL client certificate validation was not enforced if configured, allowing clients unauthorized access to protected resources over HTTP/2. This issue affected releases 2.4.18 and 2.4.20 only. |
CVE-2016-4979
|
| VCID-8axm-4anr-27ht | Sending a MERGE request against a URI handled by mod_dav_svn with the source href (sent as part of the request body as XML) pointing to a URI that is not configured for DAV will trigger a segfault. |
CVE-2013-1896
|
| VCID-8edq-8rvq-rkf1 |
CVE-2024-38475
|
|
| VCID-8eqf-c42n-y7dt | An out-of-bounds memory read was found in mod_proxy_fcgi. A malicious FastCGI server could send a carefully crafted response which could lead to a crash when reading past the end of a heap memory or stack buffer. This issue affects version 2.4.10 only. |
CVE-2014-3583
|
| VCID-8gcm-7q3n-q7bm | Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. |
CVE-2016-4975
|
| VCID-8nw9-zpxn-ckab | Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
CVE-2024-38476
|
| VCID-91u7-vh6n-v7fm | Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows |
CVE-2020-13938
|
| VCID-95zk-suqh-j7e7 | A flaw was found in the Apache HTTP Server mod_proxy module. On sites where a reverse proxy is configured, a remote attacker could send a carefully crafted request that would cause the Apache child process handling that request to crash. On sites where a forward proxy is configured, an attacker could cause a similar crash if a user could be persuaded to visit a malicious site using the proxy. This could lead to a denial of service if using a threaded Multi-Processing Module. |
CVE-2007-3847
|
| VCID-9b9s-sz9t-rubp | A bug in mod_cgid mishandling of CGI redirect paths can result in CGI output going to the wrong client when a threaded MPM is used. |
CVE-2003-0789
|
| VCID-9qdr-1v39-d7b7 | When mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications. The severity is set to Moderate because "SessionEnv on" is not a default nor common configuration, it should be considered more severe when this is the case though, because of the possible remote exploitation. |
CVE-2018-1283
|
| VCID-9tez-97xg-z3bs | In some mod_ssl configurations on Apache HTTP Server versions through to 2.4.63, an HTTP desynchronisation attack allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade. Only configurations using "SSLEngine optional" to enable TLS upgrades are affected. Users are recommended to upgrade to version 2.4.64, which removes support for TLS upgrade. |
CVE-2025-49812
|
| VCID-9u53-b79b-cfgd | Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier. |
CVE-2021-34798
|
| VCID-9vzm-qtye-ufh2 | By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. This issue only affects servers that have configured and enabled HTTP/2 support, which is not the default |
CVE-2018-1333
|
| VCID-9xwj-xak5-efb3 | An issue was discovered in the mod_ssl module in Apache 2.0. A remote attacker who forces an SSL connection to be aborted in a particular state may cause an Apache child process to enter an infinite loop, consuming CPU resources. |
CVE-2004-0748
|
| VCID-9ych-ybpr-j3h6 | Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service |
CVE-2020-13950
|
| VCID-a38m-yzz2-qfcv | The default configuration of the Apache HTTP Server on Apple OS X before 10.10.4 does not enable the mod_hfs_apple module, which allows remote attackers to bypass HTTP authentication via a crafted URL. |
CVE-2015-3675
|
| VCID-a86d-f4nd-eqhh | Apache did not filter terminal escape sequences from its access logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences. |
CVE-2003-0083
|
| VCID-a9rw-3s1y-hqd7 | Using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown. |
CVE-2019-10082
|
| VCID-acx3-3v8f-1fhu | The Debian apache2ctl script in the apache2 package squeeze before 2.2.16-6+squeeze11, wheezy before 2.2.22-13, and sid before 2.2.22-13 for the Apache HTTP Server on Debian GNU/Linux does not properly create the /var/lock/apache2 lock directory, which allows local users to gain privileges via an unspecified symlink attack. |
CVE-2013-1048
|
| VCID-agrr-tcwf-afe7 | A memory leak in parsing of HTTP headers which can be triggered remotely may allow a denial of service attack due to excessive memory consumption. |
CVE-2004-0493
|
| VCID-apfh-r85v-dbhz | When an HTTP/2 stream was destroyed after being handled, the Apache HTTP Server prior to version 2.4.33 could have written a NULL pointer potentially to an already freed memory. The memory pools maintained by the server make this vulnerabilty hard to trigger in usual configurations, the reporter and the team could not reproduce it outside debug builds, so it is classified as low risk. |
CVE-2018-1302
|
| VCID-auhk-ppv5-buaa | in Apache HTTP Server versions 2.4.0 to 2.4.41, mod_proxy_ftp use of uninitialized value with malicious FTP backend. |
CVE-2020-1934
|
| VCID-b68y-4prb-bfdk | Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.This issue affects Apache HTTP Server: through 2.4.57. |
CVE-2023-31122
|
| VCID-b9ks-detx-nkdw | Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via mod_rewrite or apache expressions that pass unvalidated request input. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.63. Note:  The Apache HTTP Server Project will be setting a higher bar for accepting vulnerability reports regarding SSRF via UNC paths. The server offers limited protection against administrators directing the server to open UNC paths. Windows servers should limit the hosts they will connect over via SMB based on the nature of NTLM authentication. |
CVE-2024-43394
|
| VCID-bau7-pme5-ckbt | HTTP Response splitting in multiple modules in Apache HTTP Server allows an attacker that can inject malicious response headers into backend applications to cause an HTTP desynchronization attack. Users are recommended to upgrade to version 2.4.59, which fixes this issue. |
CVE-2024-24795
|
| VCID-bcmv-92ve-u7a2 | A path-revealing exposure was present in multiview type map negotiation (such as the default error documents) where a module would report the full path of the typemapped .var file when multiple documents or no documents could be served. Additionally a path-revealing exposure in cgi/cgid when Apache fails to invoke a script. The modules would report "couldn't create child process /path-to-script/script.pl" revealing the full path of the script. |
CVE-2002-0654
|
| VCID-bfvg-u6sz-6qc6 | A flaw occured when using the Apache server as a HTTP proxy. A remote attacker could send a HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, causing Apache to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request. This could allow the bypass of web application firewall protection or lead to cross-site scripting (XSS) attacks. |
CVE-2005-2088
|
| VCID-brn7-nskr-7fcq | Apache on OS2 up to and including Apache 2.0.45 have a Denial of Service vulnerability caused by device names. |
CVE-2003-0134
|
| VCID-bvkg-nrwd-e7g8 | Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service |
CVE-2021-26690
|
| VCID-cgqk-f3fx-sfe9 | Certain URIs would bypass security and allow users to invoke or access any file depending on the system configuration. Affects Windows, OS2, Netware and Cygwin platforms only. |
CVE-2002-0661
|
| VCID-cn4b-1w42-gyda | An information disclosure flaw was found in mod_proxy_http in version 2.2.9 only, on Unix platforms. Under certain timeout conditions, the server could return a response intended for another user. Only those configurations which trigger the use of proxy worker pools are affected. There was no vulnerability on earlier versions, as proxy pools were not yet introduced. The simplest workaround is to globally configure: SetEnv proxy-nokeepalive 1 |
CVE-2010-2791
|
| VCID-cqjv-6m9n-mfeq | A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). |
CVE-2021-44224
|
| VCID-ct26-19cq-8kd7 | In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded. |
CVE-2018-17199
|
| VCID-d36c-rrxh-ybgv | In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0) may cause a denial of service due to no default limit on possible input size. |
CVE-2022-29404
|
| VCID-d4rc-pnv5-6uc8 | A flaw was found in the default error response for status code 400. This flaw could be used by an attacker to expose "httpOnly" cookies when no custom ErrorDocument is specified. |
CVE-2012-0053
|
| VCID-d5w4-vnbd-afdj | Malicious requests can cause various effects ranging from a relatively harmless increase in system resources through to denial of service attacks and in some cases the ability to execute arbitrary remote code. |
CVE-2002-0392
|
| VCID-d645-msqp-9fby | Buffer overflow in htdigest in Apache 2.0.52 may allow attackers to execute arbitrary code via a long realm argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability. |
CVE-2005-1344
|
| VCID-d66x-55ub-vkfw | An off-by-one stack overflow was discovered in the mod_ssl CRL verification callback. In order to exploit this issue the Apache server would need to be configured to use a malicious certificate revocation list (CRL) |
CVE-2005-1268
|
| VCID-d83x-xe6y-dufr | Multiple vulnerabilities have been discovered in Apache. |
CVE-2007-6203
|
| VCID-db6k-j9mj-e7hy | A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48. |
CVE-2021-33193
|
| VCID-dg2r-uz3a-dug5 | Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module. |
CVE-2022-28330
|
| VCID-dqkp-f1my-dbg9 | A flaw was found in the mod_imagemap module. On sites where mod_imagemap is enabled and an imagemap file is publicly available, a cross-site scripting attack is possible. |
CVE-2007-5000
|
| VCID-drp9-bvkd-4kaq | An information disclosure flaw was found in mod_proxy_http in versions 2.2.9 through 2.2.15, 2.3.4-alpha and 2.3.5-alpha. Under certain timeout conditions, the server could return a response intended for another user. Only Windows, Netware and OS2 operating systems are affected. Only those configurations which trigger the use of proxy worker pools are affected. There was no vulnerability on earlier versions, as proxy pools were not yet introduced. The simplest workaround is to globally configure; SetEnv proxy-nokeepalive 1 |
CVE-2010-2068
|
| VCID-e3jc-83a7-8uhh | By sending continous SETTINGS frames of maximum size an ongoing HTTP/2 connection could be kept busy and would never time out. This can be abused for a DoS on the server. This only affect a server that has enabled the h2 protocol. |
CVE-2018-11763
|
| VCID-edvy-cern-6kcu | Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, something like: RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ Request splitting/smuggling could result in bypass of access controls in the proxy server, proxying unintended URLs to existing origin servers, and cache poisoning. Users are recommended to update to at least version 2.4.56 of Apache HTTP Server. |
CVE-2023-25690
|
| VCID-eesz-v6ae-gya3 | In Apache HTTP Server versions 2.4.20 to 2.4.43, a specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers. |
CVE-2020-9490
|
| VCID-ehff-j1pz-b7e8 | The modules mod_proxy_ajp and mod_proxy_http did not always close the connection to the back end server when necessary as part of error handling. This could lead to an information disclosure due to a response mixup between users. |
CVE-2012-3502
|
| VCID-ehv1-yvpu-ubcg | In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected. |
CVE-2019-0211
|
| VCID-ej7y-7na3-5qby | Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified. |
CVE-2024-38474
|
| VCID-en6m-ye18-97hk | The experimental mod_disk_cache module stored client authentication credentials for cached objects such as proxy authentication credentials and Basic Authentication passwords on disk. |
CVE-2004-1834
|
| VCID-ese4-47tg-efbw | Insecure handling of LD_LIBRARY_PATH was found that could lead to the current working directory to be searched for DSOs. This could allow a local user to execute code as root if an administrator runs apachectl from an untrusted directory. |
CVE-2012-0883
|
| VCID-f2y3-s6j8-7ygr | Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured. |
CVE-2019-17567
|
| VCID-f8n9-ampd-yyah | An issue was discovered in the mod_ssl module in Apache 2.0.44-2.0.50 which could be triggered if the server is configured to allow proxying to a remote SSL server. A malicious remote SSL server could force an httpd child process to crash by sending a carefully crafted response header. This issue is not believed to allow execution of arbitrary code and will only result in a denial of service where a threaded process model is in use. |
CVE-2004-0751
|
| VCID-ffpe-1ctd-77e9 | A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. |
CVE-2021-41773
|
| VCID-fn5k-e2jr-6ube | A flaw was found in the handling of excessive interim responses from an origin server when using mod_proxy_http. A remote attacker could cause a denial of service or high memory usage. |
CVE-2008-2364
|
| VCID-fnxp-n271-mfd8 | A NULL pointer deference was found in mod_cache. A malicious HTTP server could cause a crash in a caching forward proxy configuration. This crash would only be a denial of service if using a threaded MPM. |
CVE-2014-3581
|
| VCID-fq9j-uewn-q7h7 | A buffer overflow was found in the expansion of environment variables during configuration file parsing. This issue could allow a local user to gain the privileges of a httpd child if a server can be forced to parse a carefully crafted .htaccess file written by a local user. |
CVE-2004-0747
|
| VCID-fqem-96w3-rucb | When generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection. |
CVE-2018-1312
|
| VCID-fsh3-7b9j-dfgf | Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs. This issue affects Apache HTTP Server from 2.4.0 through 2.4.65. Users are recommended to upgrade to version 2.4.66 which fixes the issue. |
CVE-2025-65082
|
| VCID-ftjw-9fb6-d3cw | Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
CVE-2024-38473
|
| VCID-fyrq-yg2u-jkc7 | mod_mime can read one byte past the end of a buffer when sending a malicious Content-Type response header. |
CVE-2017-7679
|
| VCID-fysz-5mr6-fbf1 | A denial of service flaw was found in the mod_proxy module when it was used as a reverse proxy. A remote attacker could use this flaw to force a proxy process to consume large amounts of CPU time. |
CVE-2009-1890
|
| VCID-fz8c-b8r4-1yb8 | A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash. This issue affects Apache HTTP Server 2.4.54 and earlier. |
CVE-2006-20001
|
| VCID-g1jc-8vza-u3ad | Testing using the Codenomicon HTTP Test Tool performed by the Apache Software Foundation security group and Red Hat uncovered an input validation issue in the IPv6 URI parsing routines in the apr-util library. If a remote attacker sent a request including a carefully crafted URI, an httpd child process could be made to crash. One some BSD systems it is believed this flaw may be able to lead to remote code execution. |
CVE-2004-0786
|
| VCID-g2pp-aahn-mfcd | A flaw was found in the handling of wildcards in the path of a FTP URL with mod_proxy_ftp. If mod_proxy_ftp is enabled to support FTP-over-HTTP, requests containing globbing characters could lead to cross-site scripting (XSS) attacks. |
CVE-2008-2939
|
| VCID-g55m-t4s1-nfhv | Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and prior versions. |
CVE-2022-23943
|
| VCID-g6xr-qtwz-2yaq | Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF' |
CVE-2021-30641
|
| VCID-ge2x-rh2r-kqb2 | httpd: # character matches all IPs |
CVE-2017-12171
|
| VCID-ggje-ade3-n3hg | Apache 2.0 versions before Apache 2.0.45 had a significant Denial of Service vulnerability. Remote attackers could cause a denial of service (memory consumption) via large chunks of linefeed characters, which causes Apache to allocate 80 bytes for each linefeed. |
CVE-2003-0132
|
| VCID-gqat-458a-67g2 | A stack recursion crash in the mod_lua module was found. A Lua script executing the r:wsupgrade() function could crash the process if a malicious client sent a carefully crafted PING request. This issue affected releases 2.4.7 through 2.4.12 inclusive. |
CVE-2015-0228
|
| VCID-gu44-7hkr-muae | An additional exposure was found when using mod_proxy in reverse proxy mode. In certain configurations using RewriteRule with proxy flag or ProxyPassMatch, a remote attacker could cause the reverse proxy to connect to an arbitrary server, possibly disclosing sensitive information from internal web servers not directly accessible to attacker. |
CVE-2011-4317
|
| VCID-gv84-vfvh-y7hu | If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the input to mod_sed may be very large, mod_sed may make excessively large memory allocations and trigger an abort. |
CVE-2022-30522
|
| VCID-h6kk-81jx-h7b8 | Redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. |
CVE-2019-10098
|
| VCID-h6km-ryp2-6ufa | Multiple vulnerabilities have been discovered in Apache HTTP Server, possibly allowing remote attackers to execute arbitrary code, cause a Denial of Service condition or perform man-in-the-middle attacks. |
CVE-2007-6750
|
| VCID-ha7f-21gy-3qa2 | Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: from 2.4.17 up to 2.4.63. Users are recommended to upgrade to version 2.4.64, which fixes the issue. |
CVE-2025-53020
|
| VCID-hj5r-jms3-x3fe | While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No exploit is known to the project. |
CVE-2021-41524
|
| VCID-hm3f-m22n-u3gy | Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer. |
CVE-2022-30556
|
| VCID-htfx-mahy-9kde | Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client. |
CVE-2022-37436
|
| VCID-j3mb-97k1-uuh9 | A flaw was found in the mod_status module. On sites where the server-status page is publicly accessible and ExtendedStatus is enabled this could lead to a cross-site scripting attack. Note that the server-status page is not enabled by default and it is best practice to not make this publicly available. |
CVE-2006-5752
|
| VCID-jau7-gfz8-dkfa | The renegotiation vulnerability in SSL protocol |
CVE-2009-3555
GHSA-f7w7-6pjc-wwm6 VU#120541 |
| VCID-jt89-ruvk-1kbj | The value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments. by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault. |
CVE-2017-9788
|
| VCID-jvhf-ecm7-fbb8 | Multiple vulnerabilities have been discovered in Apache, possibly resulting in a Denial of Service or the disclosure of sensitive information. |
CVE-2007-4465
|
| VCID-jzuw-73df-mfff | A specially crafted request could have crashed the Apache HTTP Server prior to version 2.4.33, due to an out of bound access after a size limit is reached by reading the HTTP header. This vulnerability is considered very hard if not impossible to trigger in non-debug mode (both log and build level), so it is classified as low risk for common server usage. |
CVE-2018-1301
|
| VCID-k4kb-21tp-4kc8 | An HTTP request smuggling attack was possible due to a bug in parsing of chunked requests. A malicious client could force the server to misinterpret the request length, allowing cache poisoning or credential hijacking if an intermediary proxy is in use. |
CVE-2015-3183
|
| VCID-k4nk-qqxg-s7e6 | Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling |
CVE-2022-22720
|
| VCID-kcwg-hswv-2uf7 | A flaw in mod_imap when using the Referer directive with image maps. In certain site configurations a remote attacker could perform a cross-site scripting attack if a victim can be forced to visit a malicious URL using certain web browsers. |
CVE-2005-3352
|
| VCID-ke1s-451y-p3cz | A flaw was found in mod_log_config. A remote attacker could send a specific truncated cookie causing a crash. This crash would only be a denial of service if using a threaded MPM. |
CVE-2014-0098
|
| VCID-kgpj-aexq-7kah | A flaw was found in the mod_status module. On sites where mod_status is enabled and the status pages were publicly accessible, a cross-site scripting attack is possible. Note that the server-status page is not enabled by default and it is best practice to not make this publicly available. |
CVE-2007-6388
|
| VCID-khfr-kgtb-rfam | When under stress, closing many connections, the HTTP/2 handling code would sometimes access memory after it has been freed, resulting in potentially erratic behaviour. |
CVE-2017-9789
|
| VCID-kkfv-4jd1-bqdm | A flaw was found in the way the Apache HTTP Server handled Range HTTP headers. A remote attacker could use this flaw to cause httpd to use an excessive amount of memory and CPU time via HTTP requests with a specially-crafted Range header. This could be used in a denial of service attack. Advisory: CVE-2011-3192.txt |
CVE-2011-3192
|
| VCID-kkuy-1j91-9bb2 | When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out. Users are recommended to upgrade to version 2.4.58, which fixes the issue. |
CVE-2023-45802
|
| VCID-kpew-rarv-83dg | A flaw was found in mod_cgid. If a server using mod_cgid hosted CGI scripts which did not consume standard input, a remote attacker could cause child processes to hang indefinitely, leading to denial of service. |
CVE-2014-0231
|
| VCID-kv7f-t14h-2bfv | By manipulating the flow control windows on streams, a client was able to block server threads for long times, causing starvation of worker threads. Connections could still be opened, but no streams where processed for these. This issue affected HTTP/2 support in 2.4.17 and 2.4.18. |
CVE-2016-1546
|
| VCID-m8uk-byje-dqey | A memory leak in the worker MPM would allow remote attackers to cause a denial of service (memory consumption) via aborted connections, which prevents the memory for the transaction pool from being reused for other connections. This issue was downgraded in severity to low (from moderate) as sucessful exploitation of the race condition would be difficult. |
CVE-2005-2970
|
| VCID-m9fd-9pya-xucw | A flaw was found in mod_proxy in httpd versions 2.4.6 to 2.4.9. A remote attacker could send a carefully crafted request to a server configured as a reverse proxy, and cause the child process to crash. This could lead to a denial of service against a threaded MPM. |
CVE-2014-0117
|
| VCID-me4r-1qb6-dqdf | A flaw in the handling of invalid Expect headers. If an attacker can influence the Expect header that a victim sends to a target site they could perform a cross-site scripting attack. It is known that some versions of Flash can set an arbitrary Expect header which can trigger this flaw. Not marked as a security issue for 2.0 or 2.2 as the cross-site scripting is only returned to the victim after the server times out a connection. |
CVE-2006-3918
|
| VCID-mtg7-8556-kbgd | A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier. |
CVE-2021-40438
|
| VCID-n76a-bbkc-tyhh | The configuration merger in itk.c in the Steinar H. Gunderson mpm-itk Multi-Processing Module 2.2.11-01 and 2.2.11-02 for the Apache HTTP Server does not properly handle certain configuration sections that specify NiceValue but not AssignUserID, which might allow remote attackers to gain privileges by leveraging the root uid and root gid of an mpm-itk process. |
CVE-2011-1176
|
| VCID-n9e1-c2zs-zkdk | A flaw was found when mod_proxy_ajp connects to a backend server that takes too long to respond. Given a specific configuration, a remote attacker could send certain requests, putting a backend server into an error state until the retry timeout expired. This could lead to a temporary denial of service. |
CVE-2012-4557
|
| VCID-na94-5565-dyfc | The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the "ap_rputs" function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue. |
CVE-2022-28614
|
| VCID-nb91-camp-eufc | Fix handling of the Require line in mod_lau when a LuaAuthzProvider is used in multiple Require directives with different arguments. This could lead to different authentication rules than expected. |
CVE-2014-8109
|
| VCID-nbar-1p1f-bqfk | SSRF in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.60 which fixes this issue. Note: Existing configurations that access UNC paths will have to configure new directive "UNCList" to allow access during request processing. |
CVE-2024-38472
|
| VCID-nkgw-gs9g-ckft | Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is "Off" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header. |
CVE-2002-0840
|
| VCID-p2a1-afnh-7qca | Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application. |
CVE-2022-31813
|
| VCID-pc2n-ga7g-byga | Apache HTTP Server, prior to release 2.4.25 (and 2.2.32), accepted a broad pattern of unusual whitespace patterns from the user-agent, including bare CR, FF, VTAB in parsing the request line and request header lines, as well as HTAB in parsing the request line. Any bare CR present in request lines was treated as whitespace and remained in the request field member "the_request", while a bare CR in the request header field name would be honored as whitespace, and a bare CR in the request header field value was retained the input headers array. Implied additional whitespace was accepted in the request line and prior to the ':' delimiter of any request header lines. RFC7230 Section 3.5 calls out some of these whitespace exceptions, and section 3.2.3 eliminated and clarified the role of implied whitespace in the grammer of this specification. Section 3.1.1 requires exactly one single SP between the method and request-target, and between the request-target and HTTP-version, followed immediately by a CRLF sequence. None of these fields permit any (unencoded) CTL character whatsoever. Section 3.2.4 explicitly disallowed any whitespace from the request header field prior to the ':' character, while Section 3.2 disallows all CTL characters in the request header line other than the HTAB character as whitespace. These defects represent a security concern when httpd is participating in any chain of proxies or interacting with back-end application servers, either through mod_proxy or using conventional CGI mechanisms. In each case where one agent accepts such CTL characters and does not treat them as whitespace, there is the possiblity in a proxy chain of generating two responses from a server behind the uncautious proxy agent. In a sequence of two requests, this results in request A to the first proxy being interpreted as requests A + A' by the backend server, and if requests A and B were submitted to the first proxy in a keepalive connection, the proxy may interpret response A' as the response to request B, polluting the cache or potentially serving the A' content to a different downstream user-agent. These defects are addressed with the release of Apache HTTP Server 2.4.25 and coordinated by a new directive; HttpProtocolOptions Strict which is the default behavior of 2.4.25 and later. By toggling from 'Strict' behavior to 'Unsafe' behavior, some of the restrictions may be relaxed to allow some invalid HTTP/1.1 clients to communicate with the server, but this will reintroduce the possibility of the problems described in this assessment. Note that relaxing the behavior to 'Unsafe' will still not permit raw CTLs other than HTAB (where permitted), but will allow other RFC requirements to not be enforced, such as exactly two SP characters in the request line. |
CVE-2016-8743
|
| VCID-pdj3-4txb-vych | A denial of service flaw was found in the mod_deflate module. This module continued to compress large files until compression was complete, even if the network connection that requested the content was closed before compression completed. This would cause mod_deflate to consume large amounts of CPU if mod_deflate was enabled for a large file. |
CVE-2009-1891
|
| VCID-pdtf-5zv7-2qaf | mod_proxy_ajp would return the wrong status code if it encountered an error, causing a backend server to be put into an error state until the retry timeout expired. A remote attacker could send malicious requests to trigger this issue, resulting in denial of service. |
CVE-2010-0408
|
| VCID-pjxs-hnjr-duey | null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request. Users are recommended to upgrade to version 2.4.60, which fixes this issue. |
CVE-2024-38477
|
| VCID-pnc8-bb23-vqh1 | A carefully crafted request body can cause a read to a random memory area which could cause the process to crash. This issue affects Apache HTTP Server 2.4.52 and earlier. |
CVE-2022-22719
|
| VCID-prd8-51a5-pygj | An exposure was found when using mod_proxy in reverse proxy mode. In certain configurations using RewriteRule with proxy flag or ProxyPassMatch, a remote attacker could cause the reverse proxy to connect to an arbitrary server, possibly disclosing sensitive information from internal web servers not directly accessible to attacker. No update of 1.3 will be released. Patches will be published to https://archive.apache.org/dist/httpd/patches/apply_to_1.3.42/ |
CVE-2011-3368
|
| VCID-pru9-2rza-qycd | Server-Side Request Forgery (SSRF) vulnerability  in Apache HTTP Server on Windows with AllowEncodedSlashes On and MergeSlashes Off allows to potentially leak NTLM hashes to a malicious server via SSRF and malicious requests or content Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
CVE-2025-59775
|
| VCID-pufp-t6dh-xqhv | A flaw in the mod_ssl handling of the "SSLVerifyClient" directive. This flaw would occur if a virtual host has been configured using "SSLVerifyClient optional" and further a directive "SSLVerifyClient required" is set for a specific location. For servers configured in this fashion, an attacker may be able to access resources that should otherwise be protected, by not supplying a client certificate when connecting. |
CVE-2005-2700
|
| VCID-pz6f-mahv-hue8 | A regression in the core of Apache HTTP Server 2.4.60 ignores some use of the legacy content-type based configuration of handlers.  "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.61, which fixes this issue. |
CVE-2024-39884
|
| VCID-q2hz-2qtr-dbht | Multiple race conditions in suexec in Apache HTTP Server (httpd) 2.2.3 between directory and file validation, and their usage, allow local users to gain privileges and execute arbitrary code by renaming directories or performing symlink attacks. NOTE: the researcher, who is reliable, claims that the vendor disputes the issue because "the attacks described rely on an insecure server configuration" in which the user "has write access to the document root." |
CVE-2007-1741
|
| VCID-q5wm-suxb-jfeb | The expression specified in <FilesMatch> could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. This could be exploited in environments where uploads of some files are are externally blocked, but only by matching the trailing portion of the filename. |
CVE-2017-15715
|
| VCID-qayj-kts9-3fde | Use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed. Third-party module writers SHOULD use ap_get_basic_auth_components(), available in 2.2.34 and 2.4.26, instead of ap_get_basic_auth_pw(). Modules which call the legacy ap_get_basic_auth_pw() during the authentication phase MUST either immediately authenticate the user after the call, or else stop the request immediately with an error response, to avoid incorrectly authenticating the current request. |
CVE-2017-3167
|
| VCID-qc9j-x576-ayc1 | By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. |
CVE-2018-8011
|
| VCID-qf2e-kgxk-pkhc | An off-by-one flaw exists in the Rewrite module, mod_rewrite. Depending on the manner in which Apache httpd was compiled, this software defect may result in a vulnerability which, in combination with certain types of Rewrite rules in the web server configuration files, could be triggered remotely. For vulnerable builds, the nature of the vulnerability can be denial of service (crashing of web server processes) or potentially allow arbitrary code execution. |
CVE-2006-3747
|
| VCID-qjeh-n57t-y7g5 | A partial fix for CVE-2024-39884 in the core of Apache HTTP Server 2.4.61 ignores some use of the legacy content-type based configuration of handlers. "AddType" and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted. Users are recommended to upgrade to version 2.4.62, which fixes this issue. |
CVE-2024-40725
|
| VCID-qm7e-n9ay-hufy | Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions. |
CVE-2022-26377
|
| VCID-qn74-neyt-jkg9 | It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions. |
CVE-2021-42013
|
| VCID-qufv-kta7-1feu | A NULL pointer dereference flaw in mod_ssl was discovered affecting server configurations where an SSL virtual host is configured with access control and a custom 400 error document. A remote attacker could send a carefully crafted request to trigger this issue which would lead to a crash. This crash would only be a denial of service if using the worker MPM. |
CVE-2005-3357
|
| VCID-r2pc-wuzb-h7hk | Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance. |
CVE-2024-36387
|
| VCID-r471-g9xs-sbga | In some mod_ssl configurations on Apache HTTP Server 2.4.35 through to 2.4.63, an access control bypass by trusted clients is possible using TLS 1.3 session resumption. Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host. |
CVE-2025-23048
|
| VCID-rdtq-8ng5-53fn | A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive). |
CVE-2021-36160
|
| VCID-rfqy-e7pv-dyfy | Malicious input to mod_auth_digest will cause the server to crash, and each instance continues to crash even for subsequently valid requests. |
CVE-2016-2161
|
| VCID-rhhj-jhej-gfcj | An issue was discovered where the field length limit was not enforced for certain malicious requests. This could allow a remote attacker who is able to send large amounts of data to a server the ability to cause Apache children to consume proportional amounts of memory, leading to a denial of service. |
CVE-2004-0942
|
| VCID-rhk3-ujc1-q7fj | Various XSS flaws due to unescaped hostnames and URIs HTML output in mod_info, mod_status, mod_imagemap, mod_ldap, and mod_proxy_ftp. |
CVE-2012-3499
|
| VCID-rhwb-4vyp-8kf2 | A flaw was found in the WinNT MPM in httpd versions 2.4.1 to 2.4.9, when using the default AcceptFilter for that platform. A remote attacker could send carefully crafted requests that would leak memory and eventually lead to a denial of service against the server. |
CVE-2014-3523
|
| VCID-scf1-zmu7-e3b2 | A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.33 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. |
CVE-2018-1303
|
| VCID-srxw-jjvr-p3d5 | The Apache HTTP server did not verify that a process was an Apache child process before sending it signals. A local attacker with the ability to run scripts on the HTTP server could manipulate the scoreboard and cause arbitrary processes to be terminated which could lead to a denial of service. |
CVE-2007-3304
|
| VCID-ss79-kcpu-mqd5 | A workaround was added in the mod_proxy_ftp module. On sites where mod_proxy_ftp is enabled and a forward proxy is configured, a cross-site scripting attack is possible against Web browsers which do not correctly derive the response character set following the rules in RFC 2616. |
CVE-2008-0005
|
| VCID-ssvj-7g27-1ug6 | A XSS flaw affected the mod_proxy_balancer manager interface. |
CVE-2012-4558
|
| VCID-svyk-az69-qbfw | The mod_proxy_balancer provided an administrative interface that could be vulnerable to cross-site request forgery (CSRF) attacks. |
CVE-2007-6420
|
| VCID-t3d9-1ebn-bbdx | A flaw was found in handling of versioning hooks in mod_dav. An attacker could send a carefully crafted request in such a way to cause the child process handling the connection to crash. This issue will only result in a denial of service where a threaded process model is in use. |
CVE-2002-1593
|
| VCID-t67v-c4gx-ukbj | In Apache HTTP Server versions 2.4.32 to 2.4.43, mod_proxy_uwsgi has a information disclosure and possible RCE |
CVE-2020-11984
|
| VCID-t95h-xhtm-zbdv | A flaw was found in the handling of the "Options" and "AllowOverride" directives. In configurations using the "AllowOverride" directive with certain "Options=" arguments, local users were not restricted from executing commands from a Server-Side-Include script as intended. |
CVE-2009-1195
|
| VCID-tbdg-kev6-5uep | A vulnerability in the apr_psprintf function in the Apache Portable Runtime (APR) library allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via long strings, as demonstrated using XML objects to mod_dav, and possibly other vectors. |
CVE-2003-0245
|
| VCID-tbud-pwyt-aye9 | A race condition was found in mod_status. An attacker able to access a public server status page on a server using a threaded MPM could send a carefully crafted request which could lead to a heap buffer overflow. Note that it is not a default or recommended configuration to have a public accessible server status page. |
CVE-2014-0226
|
| VCID-tcmz-a5dq-d7cj | A crash in ErrorDocument handling was found. If ErrorDocument 400 was configured pointing to a local URL-path with the INCLUDES filter active, a NULL dereference would occur when handling the error, causing the child process to crash. This issue affected the 2.4.12 release only. |
CVE-2015-0253
|
| VCID-td8g-tmny-jyaa | An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds. This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
CVE-2025-55753
|
| VCID-thb2-u6hh-3bcz | Multiple vulnerabilities in Apache might lead to a Denial of Service. |
CVE-2008-1678
|
| VCID-tkm7-pyue-7ffj | The HTTP/2 protocol implementation (mod_http2) had an incomplete handling of the LimitRequestFields directive. This allowed an attacker to inject unlimited request headers into the server, leading to eventual memory exhaustion. |
CVE-2016-8740
|
| VCID-twj7-4qwm-2khv | The HTTP strict parsing changes added in 2.2.32 and 2.4.24 introduced a bug in token list parsing, which allows ap_find_token() to search past the end of its input string. By maliciously crafting a sequence of request headers, an attacker may be able to cause a segmentation fault, or to force ap_find_token() to return an incorrect value. |
CVE-2017-7668
|
| VCID-u3w6-ubg9-5qdb | An information disclosure flaw was found in mod_proxy_ajp in version 2.2.11 only. In certain situations, if a user sent a carefully crafted HTTP request, the server could return a response intended for another user. |
CVE-2009-1191
|
| VCID-ud2z-cz2h-6qbr | httpd: XSS via UTF-7 encoded urls on the 403 Forbidden error page |
CVE-2008-2168
|
| VCID-ugdv-apr8-g3bz | In Apache HTTP Server 2.4 releases 2.4.37 and 2.4.38, a bug in mod_ssl when using per-location client certificate verification with TLSv1.3 allowed a client supporting Post-Handshake Authentication to bypass configured access control restrictions. |
CVE-2019-0215
|
| VCID-uhsk-juy6-g7g9 | In Apache 2.0.42 only, for a location where both WebDAV and CGI were enabled, a POST request to a CGI script would reveal the CGI source to a remote user. |
CVE-2002-1156
|
| VCID-uwqg-yytc-vfae | When the path component of a request URL contains multiple consecutive slashes ('/'), directives such as LocationMatch and RewriteRule must account for duplicates in regular expressions while other aspects of the servers processing will implicitly collapse them. |
CVE-2019-0220
|
| VCID-v41h-pbbe-zfas | HTTP/2 very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplied by the client. |
CVE-2019-10081
|
| VCID-varh-ysfr-euc8 | mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid. This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65. Users are recommended to upgrade to version 2.4.66, which fixes the issue. |
CVE-2025-66200
|
| VCID-vqs2-5x99-7qfd | A flaw in the byterange filter would cause some responses to be buffered into memory. If a server has a dynamic resource such as a CGI script or PHP script which generates a large amount of data, an attacker could send carefully crafted requests in order to consume resources, potentially leading to a Denial of Service. |
CVE-2005-2728
|
| VCID-vud7-n4uk-2be8 | In a server with multiple listening sockets a certain error returned by accept() on a rarely access port can cause a temporary denial of service, due to a bug in the prefork MPM. |
CVE-2003-0253
|
| VCID-w18t-67us-kufe | A build system problem in Apache 2.0.40 through 2.0.45 allows remote attackers to cause a denial of access to authenticated content when a threaded server is used. |
CVE-2003-0189
|
| VCID-w2tb-2uvg-g7hv | httpd: Regression of CVE-2021-40438 and CVE-2021-26691 fixes in Red Hat Enterprise Linux 8.5 |
CVE-2021-20325
|
| VCID-w6p6-u8ku-k3f6 | In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions. |
CVE-2019-0217
|
| VCID-wg13-h6gt-r7h5 | Apache 2.2.2, when running on Windows, allows remote attackers to read source code of CGI programs via a request that contains uppercase (or alternate case) characters that bypass the case-sensitive ScriptAlias directive, but allow access to the file on case-insensitive file systems. |
CVE-2006-4110
|
| VCID-wgte-97r1-j7a9 | For configurations using proxying with mod_remoteip and certain mod_rewrite rules, an attacker could spoof their IP address for logging and PHP scripts. Note this issue was fixed in Apache HTTP Server 2.4.24 but was retrospectively allocated a low severity CVE in 2020. |
CVE-2020-11985
|
| VCID-wrw6-uzz4-rkfb | ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. |
CVE-2021-39275
|
| VCID-wshe-gf99-tbg6 | A maliciously constructed HTTP/2 request could cause mod_http2 to dereference a NULL pointer and crash the server process. |
CVE-2017-7659
|
| VCID-ww49-y35r-ykdd | SSRF in Apache HTTP Server with mod_proxy loaded allows an attacker to send outbound proxy requests to a URL controlled by the attacker. Requires an unlikely configuration where mod_headers is configured to modify the Content-Type request or response header with a value provided in the HTTP request. Users are recommended to upgrade to version 2.4.64 which fixes this issue. |
CVE-2024-43204
|
| VCID-wycq-jwzz-q7hf | A flaw in the core subrequest process code was fixed, to always provide a shallow copy of the headers_in array to the subrequest, instead of a pointer to the parent request's array as it had for requests without request bodies. This meant all modules such as mod_headers which may manipulate the input headers for a subrequest would poison the parent request in two ways, one by modifying the parent request, which might not be intended, and second by leaving pointers to modified header fields in memory allocated to the subrequest scope, which could be freed before the main request processing was finished, resulting in a segfault or in revealing data from another request on threaded servers, such as the worker or winnt MPMs. |
CVE-2010-0434
|
| VCID-xa3c-7qgs-5bgf | httpd: http 0.9 request bypass of the reverse proxy vulnerability CVE-2011-3368 fix |
CVE-2011-3639
|
| VCID-xfm9-e5nr-wyat | If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. This issue affects Apache HTTP Server 2.4.52 and earlier. |
CVE-2022-22721
|
| VCID-xhtj-rr3y-puc7 | A bug in Apache HTTP Server 2.4.64 results in all "RewriteCond expr ..." tests evaluating as "true". Users are recommended to upgrade to version 2.4.65, which fixes the issue. |
CVE-2025-54090
|
| VCID-xhyc-9rpu-2bc8 | Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58. |
CVE-2023-38709
|
| VCID-xnfs-bpwj-3ycp | An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57. Users are recommended to upgrade to version 2.4.58, which fixes the issue. |
CVE-2023-43622
|
| VCID-xwnu-h1xh-3bg6 | A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier. |
CVE-2021-44790
|
| VCID-y3k1-c4rn-xbc2 | A malicious client could perform a DoS attack by flooding a connection with requests and basically never reading responses on the TCP connection. Depending on h2 worker dimensioning, it was possible to block those with relatively few connections. |
CVE-2019-9517
|
| VCID-y56e-kuj4-97f6 | A buffer overflow in the mod_ssl FakeBasicAuth code could be exploited by an attacker using a (trusted) client certificate with a subject DN field which exceeds 6K in length. |
CVE-2004-0488
|
| VCID-y8nd-7h3r-7fh5 | A flaw was found in the apr_brigade_split_line() function of the bundled APR-util library, used to process non-SSL requests. A remote attacker could send requests, carefully crafting the timing of individual bytes, which would slowly consume memory, potentially leading to a denial of service. |
CVE-2010-1623
|
| VCID-yjqs-kszf-yka1 | By using a regular expression with more than 9 captures a buffer overflow can occur in mod_alias or mod_rewrite. To exploit this an attacker would need to be able to create a carefully crafted configuration file (.htaccess or httpd.conf) |
CVE-2003-0542
|
| VCID-ym93-sxb8-fkdm | A flaw was found in the handling of the scoreboard. An unprivileged child process could cause the parent process to crash at shutdown rather than terminate cleanly. |
CVE-2012-0031
|
| VCID-yq3t-swp5-abch | httpd: SetEnvIf resource exhaustion |
CVE-2011-4415
|
| VCID-yz3c-arnr-y3cs | In Apache HTTP Server versions 2.4.20 to 2.4.43, when trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers. |
CVE-2020-11993
|
| VCID-za9f-j42y-ukdp | When a client requests that proxy ftp connect to a ftp server with IPv6 address, and the proxy is unable to create an IPv6 socket, an infinite loop occurs causing a remote Denial of Service. |
CVE-2003-0254
|
| VCID-zc2p-sfu7-jkhc | mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all. |
CVE-2017-15710
|
| VCID-zkbr-1m2z-ufe7 | A NULL pointer dereference flaw was found in the mod_proxy_ftp module. A malicious FTP server to which requests are being proxied could use this flaw to crash an httpd child process via a malformed reply to the EPSV or PASV commands, resulting in a limited denial of service. |
CVE-2009-3094
|
| VCID-zxet-n94k-57ge | In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through to 2.4.63 can be triggered by untrusted clients causing an assertion in mod_proxy_http2. Configurations affected are a reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on". |
CVE-2025-49630
|
| VCID-zyyh-n42k-8bhr | Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untrusted SSL/TLS client to insert escape characters into log files in some configurations. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files. |
CVE-2024-47252
|