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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
[email protected] 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