Use After Free Affecting firefox package, versions <0:68.8.0-1.el8_2


Severity

Recommended
critical

Based on CentOS security rating.

Threat Intelligence

EPSS
1.4% (70th percentile)

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  • Snyk IDSNYK-CENTOS8-FIREFOX-2041297
  • published26 Jul 2021
  • disclosed5 May 2020

Introduced: 5 May 2020

CVE-2020-12387  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:68.8.0-1.el8_2 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 race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

CVSS Base Scores

version 3.1