Race Condition Affecting firefox package, versions <0:115.6.0-1.el8_9


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-6133173
  • published20 Dec 2023
  • disclosed19 Dec 2023

Introduced: 19 Dec 2023

CVE-2023-6857  (opens in a new tab)
CWE-363  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:115.6.0-1.el8_9 or higher.
This issue was patched in RHSA-2024:0012.

NVD Description

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

When resolving a symlink, a race may occur where the buffer passed to readlink may actually be smaller than necessary. This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

CVSS Scores

version 3.1