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Gentoo Linux Security Advisory                           GLSA 202105-12
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                                            https://security.gentoo.org/
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  Severity: Low
     Title: OpenSMTPD: Multiple vulnerabilities
      Date: May 26, 2021
      Bugs: #761945
        ID: 202105-12

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Synopsis
========

Multiple vulnerabilities have been found in OpenSMTPD, the worst of
which could result in a Denial of Service condition.

Background
==========

OpenSMTPD is a lightweight but featured SMTP daemon from OpenBSD.

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

     -------------------------------------------------------------------
      Package              /     Vulnerable     /            Unaffected
     -------------------------------------------------------------------
   1  mail-mta/opensmtpd          < 6.8.0_p2               >= 6.8.0_p2

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

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

Impact
======

A remote attacker, by connecting to the SMTP listener daemon, could
possibly cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenSMTPD users should upgrade to the latest version:

   # emerge --sync
   # emerge --ask --oneshot --verbose ">=mail-mta/opensmtpd-6.8.0_p2"

References
==========

[ 1 ] CVE-2020-35679
       https://nvd.nist.gov/vuln/detail/CVE-2020-35679
[ 2 ] CVE-2020-35680
       https://nvd.nist.gov/vuln/detail/CVE-2020-35680

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

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

  https://security.gentoo.org/glsa/202105-12

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