CVE-2021-33193

Published: Aug 16, 2021

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
Apache Software Foundation	Apache HTTP Server	affected `Apache HTTP Server 2.4 2.4.17 to 2.4.48`

References

https://portswigger.net/research/http2

https://github.com/apache/httpd/commit/ecebcc035ccd8d0e2984fe41420d9e944f456b3c.patch

[httpd-cvs] 20210916 [httpd-site] branch main updated: Revert "Add descriptions for CVE-2021-33193 CVE-2021-36160"

mailing-list

[httpd-cvs] 20210916 [httpd-site] branch main updated: Add descriptions for CVE-2021-33193 CVE-2021-36160

mailing-list

FEDORA-2021-5d2d4b6ac5

vendor-advisory

FEDORA-2021-f94985afca

vendor-advisory

20211124 Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products: November 2021

vendor-advisory

https://www.oracle.com/security-alerts/cpujan2022.html

https://security.netapp.com/advisory/ntap-20210917-0004/

https://www.tenable.com/security/tns-2021-17

https://www.oracle.com/security-alerts/cpuapr2022.html

GLSA-202208-20

vendor-advisory

[debian-lts-announce] 20230303 [SECURITY] [DLA 3351-1] apache2 security update

mailing-list

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CVE-2021-33193

Description

Affected Products

References