Out-of-bounds Write Affecting httpd:2.4/mod_http2 package, versions <0:1.15.7-3.module_el8.5.0+2609+b30d9eec


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
81.93% (99th percentile)

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  • Snyk IDSNYK-ALMALINUX8-HTTPD-5633060
  • published28 May 2023
  • disclosed12 Oct 2021

Introduced: 12 Oct 2021

CVE-2021-26691  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 httpd:2.4/mod_http2 to version 0:1.15.7-3.module_el8.5.0+2609+b30d9eec or higher.
This issue was patched in ALSA-2021:3816.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd:2.4/mod_http2 package and not the httpd:2.4/mod_http2 package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow

References

CVSS Scores

version 3.1