Gentoo: GLSA-202012-20: Mozilla Firefox, Mozilla Thunderbird: Multiple vulnerabilities

Multiple vulnerabilities have been found in Mozilla Firefox and Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. [More...]

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Gentoo Linux Security Advisory                           GLSA 202012-20
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: Mozilla Firefox, Mozilla Thunderbird: Multiple
            vulnerabilities
      Date: December 23, 2020
      Bugs: #759097
        ID: 202012-20

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Synopsis
========

Multiple vulnerabilities have been found in Mozilla Firefox and Mozilla
Thunderbird, 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.

Mozilla Thunderbird is a popular open-source email client from the
Mozilla project.

Affected packages
=================

     -------------------------------------------------------------------
      Package              /     Vulnerable     /            Unaffected
     -------------------------------------------------------------------
   1  www-client/firefox            < 84.0           >= 78.6.0:0/esr78
                                                               >= 84.0
   2  www-client/firefox-bin        < 84.0           >= 78.6.0:0/esr78
                                                               >= 84.0
   3  mail-client/thunderbird      < 78.6.0                  >= 78.6.0
   4  mail-client/thunderbird-bin
                                   < 78.6.0                  >= 78.6.0
     -------------------------------------------------------------------
      4 affected packages

Description
===========

Multiple vulnerabilities have been discovered in Mozilla Firefox and
Mozilla Thunderbird. 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 users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=www-client/firefox-84.0"

All Mozilla Firefox (bin) users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=www-client/firefox-bin-84.0"

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

   # emerge --sync
   # emerge --ask --oneshot -v ">=www-client/firefox-78.6.0:0/esr78"

All Mozilla Firefox ESR (bin) users should upgrade to the latest
version:

   # emerge --sync
   # emerge --ask --oneshot -v ">=www-client/firefox-bin-78.6.0:0/esr78"

All Mozilla Thunderbird users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=mail-client/thunderbird-78.6.0"

All Mozilla Thunderbird (bin) users should upgrade to the latest
version:

   # emerge --sync
   # emerge --ask --oneshot -v ">=mail-client/thunderbird-bin-78.6.0"

References
==========

[ 1 ] CVE-2020-16042
       https://nvd.nist.gov/vuln/detail/CVE-2020-16042
[ 2 ] CVE-2020-26971
       https://nvd.nist.gov/vuln/detail/CVE-2020-26971
[ 3 ] CVE-2020-26973
       https://nvd.nist.gov/vuln/detail/CVE-2020-26973
[ 4 ] CVE-2020-26974
       https://nvd.nist.gov/vuln/detail/CVE-2020-26974
[ 5 ] CVE-2020-26978
       https://nvd.nist.gov/vuln/detail/CVE-2020-26978
[ 6 ] CVE-2020-35111
       https://nvd.nist.gov/vuln/detail/CVE-2020-35111
[ 7 ] CVE-2020-35113
       https://nvd.nist.gov/vuln/detail/CVE-2020-35113
[ 8 ] MFSA-2020-55
       https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/
[ 9 ] MFSA-2020-56
       https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/

Availability
============

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

  https://security.gentoo.org/glsa/202012-20

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
This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 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