Out-of-bounds Write Affecting httpd:2.4/mod_session package, versions <0:2.4.37-43.module+el8.5.0+13064+c4b14997


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-RHEL8-HTTPD-4208068
  • published10 Nov 2021
  • disclosed9 Nov 2021

Introduced: 9 Nov 2021

CVE-2021-20325  (opens in a new tab)
CWE-787  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade RHEL:8 httpd:2.4/mod_session to version 0:2.4.37-43.module+el8.5.0+13064+c4b14997 or higher.
This issue was patched in RHSA-2021:4537.

NVD Description

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

Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a security regression compared to the versions shipped in Red Hat Enterprise Linux 8.4. A user who installs or updates to Red Hat Enterprise Linux 8.5.0 would be vulnerable to the mentioned CVEs, even if they were properly fixed in Red Hat Enterprise Linux 8.4. CVE-2021-20325 was assigned to that Red Hat specific security regression and it does not affect the upstream versions of httpd.

CVSS Scores

version 3.1