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Vulnerability details: VCID-2dyn-1fxu-aaaa
Vulnerability ID VCID-2dyn-1fxu-aaaa
Aliases CVE-2020-13950
Summary 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
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
generic_textual Medium http://httpd.apache.org/security/vulnerabilities_24.html
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-13950.html
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4613
rhas Moderate https://access.redhat.com/errata/RHSA-2021:4614
rhas Low https://access.redhat.com/errata/RHSA-2022:5163
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13950.json
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.00619 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.01516 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.01516 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.01516 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.01516 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
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epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.17002 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.1737 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
epss 0.40573 https://api.first.org/data/v1/epss?cve=CVE-2020-13950
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1966738
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13950
cvssv3.1 8.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
apache_httpd low https://httpd.apache.org/security/json/CVE-2020-13950.json
generic_textual Low https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-13950
generic_textual Low https://lists.apache.org/thread.html/rbe197409ae4a58b629fb792d1aed541ccbbf865121a80e1c5938d223@%3Cannounce.httpd.apache.org%3E
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2020-13950
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-13950
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2020-13950
archlinux Medium https://security.archlinux.org/AVG-2053
generic_textual Medium https://ubuntu.com/security/notices/USN-4994-1
cvssv3.1 8.2 https://www.oracle.com/security-alerts/cpuoct2021.html
generic_textual HIGH https://www.oracle.com/security-alerts/cpuoct2021.html
generic_textual Low http://www.openwall.com/lists/oss-security/2021/06/10/4
Reference id Reference type URL
http://httpd.apache.org/security/vulnerabilities_24.html
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-13950.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13950.json
https://api.first.org/data/v1/epss?cve=CVE-2020-13950
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13950
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-13950
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd@%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/rbe197409ae4a58b629fb792d1aed541ccbbf865121a80e1c5938d223@%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/rbe197409ae4a58b629fb792d1aed541ccbbf865121a80e1c5938d223%40%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
https://security.gentoo.org/glsa/202107-38
https://security.netapp.com/advisory/ntap-20210702-0001/
https://ubuntu.com/security/notices/USN-4994-1
https://www.oracle.com/security-alerts/cpuoct2021.html
http://www.openwall.com/lists/oss-security/2021/06/10/4
1966738 https://bugzilla.redhat.com/show_bug.cgi?id=1966738
AVG-2053 https://security.archlinux.org/AVG-2053
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
CVE-2020-13950 https://httpd.apache.org/security/json/CVE-2020-13950.json
CVE-2020-13950 https://nvd.nist.gov/vuln/detail/CVE-2020-13950
RHSA-2021:4613 https://access.redhat.com/errata/RHSA-2021:4613
RHSA-2021:4614 https://access.redhat.com/errata/RHSA-2021:4614
RHSA-2022:5163 https://access.redhat.com/errata/RHSA-2022:5163
USN-4994-1 https://usn.ubuntu.com/4994-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13950.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13950
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13950
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-13950
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.79249
EPSS Score 0.00619
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.