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Vulnerability details: VCID-atfv-y1yf-23fm
Vulnerability ID VCID-atfv-y1yf-23fm
Aliases CVE-2019-0197
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
System Score Found at
cvssv3 4.2 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-0197.json
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.00307 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01492 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.01533 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.02233 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
epss 0.02233 https://api.first.org/data/v1/epss?cve=CVE-2019-0197
apache_httpd low https://httpd.apache.org/security/json/CVE-2019-0197.json
cvssv2 4.9 https://nvd.nist.gov/vuln/detail/CVE-2019-0197
cvssv3.1 4.2 https://nvd.nist.gov/vuln/detail/CVE-2019-0197
archlinux Critical https://security.archlinux.org/AVG-946
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2019:3932
https://access.redhat.com/errata/RHSA-2019:3933
https://access.redhat.com/errata/RHSA-2019:3935
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-0197.json
https://api.first.org/data/v1/epss?cve=CVE-2019-0197
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0197
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.apache.org/thread.html/e0b8f6e858b1c8ec2ce8e291a2c543d438915037c7af661ab6d33808%40%3Cdev.httpd.apache.org%3E
https://security.netapp.com/advisory/ntap-20190617-0002/
https://support.f5.com/csp/article/K44591505
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
http://www.openwall.com/lists/oss-security/2019/04/02/2
http://www.securityfocus.com/bid/107665
1695042 https://bugzilla.redhat.com/show_bug.cgi?id=1695042
ASA-201904-3 https://security.archlinux.org/ASA-201904-3
AVG-946 https://security.archlinux.org/AVG-946
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:communications_session_report_manager:8.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_report_manager:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_report_manager:8.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_report_manager:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_report_manager:8.1.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_report_manager:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_report_manager:8.2.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_report_manager:8.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_route_manager:8.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_route_manager:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_route_manager:8.1.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_route_manager:8.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_route_manager:8.1.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_route_manager:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_session_route_manager:8.2.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_session_route_manager:8.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0:*:*:*:*:*:*:* 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:*:*:*:*:*:*:*
cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*
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:retail_xstore_point_of_service:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:retail_xstore_point_of_service:7.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
CVE-2019-0197 https://httpd.apache.org/security/json/CVE-2019-0197.json
CVE-2019-0197 https://nvd.nist.gov/vuln/detail/CVE-2019-0197
RHSA-2020:2644 https://access.redhat.com/errata/RHSA-2020:2644
RHSA-2020:2646 https://access.redhat.com/errata/RHSA-2020:2646
RHSA-2020:4751 https://access.redhat.com/errata/RHSA-2020:4751
USN-4113-1 https://usn.ubuntu.com/4113-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-0197.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: AV:N/AC:M/Au:S/C:N/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-0197
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:H/PR:L/UI:N/S:U/C:N/I:L/A:L Found at https://nvd.nist.gov/vuln/detail/CVE-2019-0197
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 0.53617
EPSS Score 0.00307
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:29:05.908039+00:00 Apache HTTPD Importer Import https://httpd.apache.org/security/json/CVE-2019-0197.json 37.0.0