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Gentoo Linux Security Advisory                           GLSA 202401-22
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: libspf2: Multiple vulnerabilities
     Date: January 15, 2024
     Bugs: #807739
       ID: 202401-22

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Synopsis
========

Multiple vulnerabilities have been discovered in libspf2, the worst of
which can lead to remote code execution.

Background
==========

libspf2 is a library that implements the Sender Policy Framework,
allowing mail transfer agents to make sure that an email is authorized
by the domain name that it is coming from.

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

Package              Vulnerable    Unaffected
-------------------  ------------  ------------
mail-filter/libspf2  < 1.2.11      >= 1.2.11

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

Multiple vulnerabilities have been discovered in libspf2. Please review
the CVE identifiers referenced below for details.

Impact
======

Various buffer overflows have been identified that can lead to denial of
service and possibly arbitrary code execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libspf2 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=mail-filter/libspf2-1.2.11"

References
==========

[ 1 ] CVE-2021-20314
      https://nvd.nist.gov/vuln/detail/CVE-2021-20314
[ 2 ] CVE-2021-33912
      https://nvd.nist.gov/vuln/detail/CVE-2021-33912
[ 3 ] CVE-2021-33913
      https://nvd.nist.gov/vuln/detail/CVE-2021-33913

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

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

 https://security.gentoo.org/glsa/202401-22

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 2024 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/