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

GLSA 202101-14 : Mozilla Thunderbird: Remote code execution

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Gentoo Linux Security Advisory GLSA 202101-14
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  https://security.gentoo.org/
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Severity: Normal
Title: Mozilla Thunderbird: Remote code execution
Date: January 22, 2021
Bugs: #765088
ID: 202101-14

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Synopsis
=======
Multiple vulnerabilities have been found in Mozilla Thunderbird, the
worst of which could result in the arbitrary execution of code.

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

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 mail-client/thunderbird < 78.6.1 >= 78.6.1
2 mail-client/thunderbird-bin
< 78.6.1 >= 78.6.1
-------------------------------------------------------------------
2 affected packages

Description
==========
A use-after-free bug was discovered in Mozilla Thunderbird handling of
SCTP.

Impact
=====
A remote attacker could possibly execute arbitrary code with the
privileges of the process or cause a Denial of Service condition.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Mozilla Thunderbird users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/thunderbird-78.6.1"

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

# emerge --sync
# emerge --ask --oneshot -v ">=mail-client/thunderbird-bin-78.6.1"

References
=========
[ 1 ] CVE-2020-16044
  https://nvd.nist.gov/vuln/detail/CVE-2020-16044
[ 2 ] MFSA-2021-02
  https://www.mozilla.org/en-US/security/advisories/mfsa2021-02/

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

  https://security.gentoo.org/glsa/202101-14

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