GLSA 202101-04: Mozilla Firefox: Remote code execution

http://security.gentoo.org/

Severity:	normal
Title:	Mozilla Firefox: Remote code execution
Date:	01/10/2021
Bugs:	#764161
ID:	202101-04

Synopsis

A use-after-free in Mozilla Firefox's SCTP handling may allow remote code execution.

Background

Mozilla Firefox is a popular open-source web browser from the Mozilla project.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
www-client/firefox-bin	< 84.0.2	>= 78.6.1	All supported architectures
www-client/firefox	< 84.0.2	>= 78.6.1	All supported architectures

Description

A use-after-free bug was discovered in Mozilla Firefox’s handling of SCTP.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Firefox ESR users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose
      ">=www-client/firefox-78.6.1:0/esr78"

All Firefox ESR binary users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose
      ">=www-client/firefox-bin-78.6.1:0/esr78"

All Firefox users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=www-client/firefox-84.0.2"

All Firefox binary users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=www-client/firefox-bin-84.0.2"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202101-04.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.