Use After Free Affecting firefox package, versions <0:91.2.0-4.el8_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.27% (67th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-3974318
  • published6 Oct 2021
  • disclosed5 Oct 2021

Introduced: 5 Oct 2021

CVE-2021-38498  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:91.2.0-4.el8_2 or higher.
This issue was patched in RHSA-2021:3756.

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.

During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

CVSS Scores

version 3.1