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Gentoo Linux Security Advisory                           GLSA 202010-02
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Mozilla Firefox, Mozilla Thunderbird: Multiple
           vulnerabilities
     Date: October 17, 2020
     Bugs: #744208, #745432
       ID: 202010-02

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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            < 81.0           >= 78.3.0:0/esr78
                                                              >= 81.0
  2  www-client/firefox-bin        < 81.0           >= 78.3.0:0/esr78
                                                              >= 81.0
  3  mail-client/thunderbird      < 78.3.1                  >= 78.3.1
  4  mail-client/thunderbird-bin
                                  < 78.3.1                  >= 78.3.1
    -------------------------------------------------------------------
     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-81.0"

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

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-client/firefox-bin-81.0"

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

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-client/firefox-78.3.0"

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

  # emerge --sync
  # emerge --ask --oneshot --verbose
 ">=www-client/firefox-bin-78.3.0"

All Mozilla Thunderbird users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose
 ">=mail-client/thunderbird-78.3.1"

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

  # emerge --sync
  # emerge --ask --oneshot -v ">=mail-client/thunderbird-bin-78.3.1"

References
==========

[ 1 ] CVE-2020-15673
      https://nvd.nist.gov/vuln/detail/CVE-2020-15673
[ 2 ] CVE-2020-15676
      https://nvd.nist.gov/vuln/detail/CVE-2020-15676
[ 3 ] CVE-2020-15677
      https://nvd.nist.gov/vuln/detail/CVE-2020-15677
[ 4 ] CVE-2020-15678
      https://nvd.nist.gov/vuln/detail/CVE-2020-15678
[ 5 ] Mozilla Foundation Security Advisory 2020-43
      https://www.mozilla.org/en-US/security/advisories/mfsa2020-43/
[ 6 ] Mozilla Foundation Security Advisory 2020-44
      https://www.mozilla.org/en-US/security/advisories/mfsa2020-44/

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

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

 https://security.gentoo.org/glsa/202010-02

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 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


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