CVE-2021-33193
Published: 16 August 2021
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.
Priority
Medium
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
apache2 Launchpad, Ubuntu, Debian |
Upstream |
Released
(2.4.48-4)
|
| Ubuntu 21.10 (Impish Indri) |
Released
(2.4.48-3.1ubuntu2)
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Released
(2.4.46-4ubuntu1.2)
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Released
(2.4.41-4ubuntu3.5)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(2.4.29-1ubuntu4.17)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Not vulnerable
(http2 disabled in xenial)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Not vulnerable
(code not present)
|
|
|
Patches: Upstream: https://github.com/apache/httpd/commit/f990e5ecad40b100a8a5c7c1033c46044a9cb244 (trunk) Upstream: https://github.com/apache/httpd/commit/ecebcc035ccd8d0e2984fe41420d9e944f456b3c (2.4) |
||
Notes
| Author | Note |
|---|---|
| mdeslaur | commits for trunk and 2.4 don't match, needs investigation commit for 2.4 is the one listed in the vulnerability report as of 2021-08-26, no new version of apache contains the fix |