Use After Free Affecting firefox package, versions <0:91.3.0-1.el8_4


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.44% (75th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-CENTOS8-FIREFOX-2411385
  • published23 Feb 2022
  • disclosed2 Nov 2021

Introduced: 2 Nov 2021

CVE-2021-43535  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:91.3.0-1.el8_4 or higher.

NVD Description

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

A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.

CVSS Scores

version 3.1