vulnerability
Apache HTTPD: Request splitting via HTTP/2 method injection and mod_proxy (CVE-2021-33193)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | 2021-08-16 | 2021-12-22 | 2024-12-09 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
2021-08-16
Added
2021-12-22
Modified
2024-12-09
Description
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.
Solution
apache-httpd-upgrade-latest
References
- URL-https://github.com/apache/httpd/commit/ecebcc035ccd8d0e2984fe41420d9e944f456b3c.patch
- URL-https://lists.apache.org/thread.html/re4162adc051c1a0a79e7a24093f3776373e8733abaff57253fef341d%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.apache.org/thread.html/ree7519d71415ecdd170ff1889cab552d71758d2ba2904a17ded21a70%40%3Ccvs.httpd.apache.org%3E
- URL-https://lists.debian.org/debian-lts-announce/2023/03/msg00002.html
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSM6UWQICBJ2TU727RENU3HBKEAFLT6T/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUVJVRJRBW5QVX4OY3NOHZDQ3B3YOTSG/
- URL-https://portswigger.net/research/http2
- URL-https://security.gentoo.org/glsa/202208-20
- URL-https://security.netapp.com/advisory/ntap-20210917-0004/
- URL-https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-2.4.49-VWL69sWQ
- URL-https://www.oracle.com/security-alerts/cpuapr2022.html
- URL-https://www.oracle.com/security-alerts/cpujan2022.html
- URL-https://www.tenable.com/security/tns-2021-17
- CVE-2021-33193
- https://attackerkb.com/topics/CVE-2021-33193

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