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Gentoo Linux Security Advisory 202012-20

Gentoo Linux Security Advisory 202012-20
Posted Dec 24, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202012-20 - Multiple vulnerabilities have been found in Mozilla Firefox and Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 84.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-16042, CVE-2020-26971, CVE-2020-26973, CVE-2020-26974, CVE-2020-26978, CVE-2020-35111, CVE-2020-35113
SHA-256 | de30a1e21e5b7ada6ec4bcbb46cceddbefafa75528b46c501c1e55964f1b231f

Gentoo Linux Security Advisory 202012-20

Change Mirror Download
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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
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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