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Gentoo Linux Security Advisory                           GLSA 201710-05
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Munin: Arbitrary file write
     Date: October 08, 2017
     Bugs: #610602
       ID: 201710-05

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Synopsis
========

A vulnerability in Munin allows local attackers to overwrite any file
accessible to the www-data user.

Background
==========

Munin is an open source server monitoring tool.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/munin           < 2.0.33                  >= 2.0.33 

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

When Munin is compiled with CGI graphics enabled then the files
accessible to the www-data user can be overwritten.

Impact
======

A local attacker, by setting multiple upper_limit GET parameters, could
overwrite files accessible to the www-user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Munin users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-analyzer/munin-2.0.33"

References
==========

[ 1 ] CVE-2017-6188
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6188

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

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

 https://security.gentoo.org/glsa/201710-05

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.

http://creativecommons.org/licenses/by-sa/2.5
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