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

GLSA 202107-09 : Mozilla Firefox: Multiple vulnerabilities

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Gentoo Linux Security Advisory GLSA 202107-09
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  https://security.gentoo.org/
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Severity: Normal
Title: Mozilla Firefox: Multiple vulnerabilities
Date: July 07, 2021
Bugs: #794082
ID: 202107-09

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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 < 89.0 >= 78.11.0:0/esr78
>= 89.0
2 www-client/firefox-bin < 89.0 >= 78.11.0:0/esr78
>= 89.0
-------------------------------------------------------------------
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-78.11.0"

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-bin-78.11.0"

All Mozilla Firefox users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-89.0"

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/firefox-bin-89.0"

References
=========
[ 1 ] CVE-2021-29959
  https://nvd.nist.gov/vuln/detail/CVE-2021-29959
[ 2 ] CVE-2021-29960
  https://nvd.nist.gov/vuln/detail/CVE-2021-29960
[ 3 ] CVE-2021-29961
  https://nvd.nist.gov/vuln/detail/CVE-2021-29961
[ 4 ] CVE-2021-29966
  https://nvd.nist.gov/vuln/detail/CVE-2021-29966

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

  https://security.gentoo.org/glsa/202107-09

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