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Gentoo Linux Security Advisory                           GLSA 201311-04
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                                            https://security.gentoo.org/
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 Severity: Normal
    Title: Vixie cron: Denial of Service
     Date: November 07, 2013
     Bugs: #308055
       ID: 201311-04

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Synopsis
=======
A vulnerability has been found in Vixie cron, allowing local attackersto conduct symlink attacks.

Background
=========
Paul Vixie's cron daemon, a fully featured crond implementation.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-process/vixie-cron      < 4.1-r14                 >= 4.1-r14

Description
==========
Vixie cron contains a race condition relating to atime and mtime values
of temporary files.

Impact
=====
A local attacker could change the modification time of files, possibly
resulting in a Denial of Service condition via a symlink attack.

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

Resolution
=========
All Vixie cron users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-process/vixie-cron-4.1-r14"

References
=========
[ 1 ] CVE-2010-0424
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0424

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

 https://security.gentoo.org/glsa/201311-04

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 2013 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/