Use After Free Affecting firefox package, versions <0:78.5.0-1.el6_10


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
1.27% (67th percentile)

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  • Snyk IDSNYK-CENTOS6-FIREFOX-2162454
  • published26 Jul 2021
  • disclosed17 Nov 2020

Introduced: 17 Nov 2020

CVE-2020-26959  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Centos:6 firefox to version 0:78.5.0-1.el6_10 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:6 relevant fixed versions and status.

During browser shutdown, reference decrementing could have occured on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

CVSS Base Scores

version 3.1