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Gentoo Linux Security Advisory                           GLSA 202107-01
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: corosync: Denial of service
     Date: July 03, 2021
     Bugs: #658354
       ID: 202107-01

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Synopsis
========

A vulnerability in corosync could lead to a Denial of Service
condition.

Background
==========

The Corosync Cluster Engine is a Group Communication System with
additional features for implementing high availability within
applications.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-cluster/corosync         < 3.0.4                    >= 3.0.4 

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

It was discovered that corosync allowed an unauthenticated user to
cause a Denial of Service by application crash.

Impact
======

A remote attacker could send a malicious crafted packet, possibly
resulting in a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All corosync users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-cluster/corosync-3.0.4"

References
==========

[ 1 ] CVE-2018-1084
      https://nvd.nist.gov/vuln/detail/CVE-2018-1084

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

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

 https://security.gentoo.org/glsa/202107-01

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