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[gentoo-announce] [ GLSA 201311-04 ] Vixie cron: Denial of Service

Posted on 07 November 2013
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201311-04
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http://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 attackers
to 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:

http://security.gentoo.org/glsa/glsa-201311-04.xml

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.

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


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