CVE-2021-33193 Affecting httpd:2.4/httpd package, versions <0:2.4.37-47.module_el8.6.0+2935+fb177b09.2


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.19% (57th percentile)

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  • Snyk IDSNYK-ALMALINUX8-HTTPD-5625497
  • published28 May 2023
  • disclosed10 May 2022

Introduced: 10 May 2022

CVE-2021-33193  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 httpd:2.4/httpd to version 0:2.4.37-47.module_el8.6.0+2935+fb177b09.2 or higher.
This issue was patched in ALSA-2022:1915.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd:2.4/httpd package and not the httpd:2.4/httpd package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1