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Gentoo Linux Security Advisory                           GLSA 201709-17
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: CVS: Command injection
     Date: September 24, 2017
     Bugs: #627498
       ID: 201709-17

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Synopsis
=======
A command injection vulnerability in CVS may allow remote attackers to
execute arbitrary code.

Background
=========
CVS (Concurrent Versions System) is an open-source network-transparent
version control system. It contains both a client utility and a server.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-vcs/cvs               < 1.12.12-r12           >= 1.12.12-r12 

Description
==========
It was discovered that when CVS is configured to use SSH for remote
repositories it allows remote attackers to execute arbitrary code
through a repository URL with a specially crafted hostname.

Impact
=====
A remote attacker, by enticing a user to clone a specially crafted
repository, could possibly execute arbitrary code with the privileges
of the process.

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

Resolution
=========
All CVS users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-vcs/cvs-1.12.12-r12"

References
=========
[ 1 ] CVE-2017-12836
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-12836

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

 https://security.gentoo.org/glsa/201709-17

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 2017 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/