A Mozilla Firefox security update has been released for Gentoo Linux.

GLSA 202102-01 : Mozilla Firefox: Multiple vulnerabilities

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Gentoo Linux Security Advisory GLSA 202102-01
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  https://security.gentoo.org/
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Severity: Normal
Title: Mozilla Firefox: Multiple vulnerabilities
Date: February 01, 2021
Bugs: #767334
ID: 202102-01

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Synopsis
=======
Multiple vulnerabilities have been found in Mozilla Firefox, the worst
of which could result in the arbitrary execution of code.

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

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-client/firefox < 85.0 >= 78.7.0:0/esr78
>= 85.0
2 www-client/firefox-bin < 85.0 >= 78.7.0:0/esr78
>= 85.0
-------------------------------------------------------------------
2 affected packages

Description
==========
Multiple vulnerabilities have been discovered in Mozilla Firefox.
Please review the CVE identifiers referenced below for details.

Impact
=====
Please review the referenced CVE identifiers for details.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Mozilla Firefox ESR users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-78.7.0"

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-bin-78.7.0"

All Mozilla Firefox users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-85.0"

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-bin-85.0"

References
=========
[ 1 ] CVE-2021-23953
  https://nvd.nist.gov/vuln/detail/CVE-2021-23953
[ 2 ] CVE-2021-23954
  https://nvd.nist.gov/vuln/detail/CVE-2021-23954
[ 3 ] CVE-2021-23955
  https://nvd.nist.gov/vuln/detail/CVE-2021-23955
[ 4 ] CVE-2021-23956
  https://nvd.nist.gov/vuln/detail/CVE-2021-23956
[ 5 ] CVE-2021-23958
  https://nvd.nist.gov/vuln/detail/CVE-2021-23958
[ 6 ] CVE-2021-23960
  https://nvd.nist.gov/vuln/detail/CVE-2021-23960
[ 7 ] CVE-2021-23961
  https://nvd.nist.gov/vuln/detail/CVE-2021-23961
[ 8 ] CVE-2021-23962
  https://nvd.nist.gov/vuln/detail/CVE-2021-23962
[ 9 ] CVE-2021-23963
  https://nvd.nist.gov/vuln/detail/CVE-2021-23963
[ 10 ] CVE-2021-23964
  https://nvd.nist.gov/vuln/detail/CVE-2021-23964
[ 11 ] CVE-2021-23965
  https://nvd.nist.gov/vuln/detail/CVE-2021-23965
[ 12 ] CVE-2021-26976
  https://nvd.nist.gov/vuln/detail/CVE-2021-26976
[ 13 ] Upstream advisory (MFSA-2021-03)
  https://www.mozilla.org/en-US/security/advisories/mfsa2021-03/
[ 14 ] Upstream advisory (MFSA-2021-04)
  https://www.mozilla.org/en-US/security/advisories/mfsa2021-04/

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/202102-01

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.

License
======
Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

  https://creativecommons.org/licenses/by-sa/2.5