Use After Free Affecting firefox package, versions <0:78.12.0-1.el8_4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.81% (83rd percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-4056476
  • published26 Jul 2021
  • disclosed13 Jul 2021

Introduced: 13 Jul 2021

CVE-2021-29970  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:78.12.0-1.el8_4 or higher.
This issue was patched in RHSA-2021:2743.

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.

A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. This bug could only be triggered when accessibility was enabled.. This vulnerability affects Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.

CVSS Scores

version 3.1