CVE-2021-23961 Affecting firefox package, versions <85.0+build1-0ubuntu1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.47% (76th percentile)

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  • Snyk IDSNYK-UBUNTU2104-FIREFOX-1256227
  • published27 Jan 2021
  • disclosed26 Feb 2021

Introduced: 27 Jan 2021

CVE-2021-23961  (opens in a new tab)

How to fix?

Upgrade Ubuntu:21.04 firefox to version 85.0+build1-0ubuntu1 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 Ubuntu. See How to fix? for Ubuntu:21.04 relevant fixed versions and status.

Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.

CVSS Scores

version 3.1