Null Byte Interaction Error (Poison Null Byte) Affecting firefox package, versions <0:78.7.0-2.el8_3


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.28% (69th percentile)

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  • Snyk IDSNYK-CENTOS8-FIREFOX-2089453
  • published26 Jul 2021
  • disclosed26 Jan 2021

Introduced: 26 Jan 2021

CVE-2021-23960  (opens in a new tab)
CWE-626  (opens in a new tab)

How to fix?

Upgrade Centos:8 firefox to version 0:78.7.0-2.el8_3 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.

Performing garbage collection on re-declared JavaScript variables resulted in a user-after-poison, and a potentially exploitable crash. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS Scores

version 3.1