GLSA 200606-07 Vixie Cron: Privilege Escalation

Posted by Bob on: 06/09/2006 05:12 PM [ Print | 0 comment(s) ]

A new security update has been released for Gentoo Linux - Vixie Cron: Privilege Escalation. Here the announcement:

Gentoo Linux Security Advisory GLSA 200606-07
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http://security.gentoo.org/
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Severity: High
Title: Vixie Cron: Privilege Escalation
Date: June 09, 2006
Bugs: #134194
ID: 200606-07

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Synopsis
========

Vixie Cron allows local users to execute programs as root.

Background
==========

Vixie Cron is a command scheduler with extended syntax over cron.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-process/vixie-cron lt; 4.1-r9 gt;= 4.1-r9

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

Roman Veretelnikov discovered that Vixie Cron fails to properly check
whether it can drop privileges accordingly if setuid() in do_command.c
fails due to a user exceeding assigned resource limits.

Impact
======

Local users can execute code with root privileges by deliberately
exceeding their assigned resource limits and then starting a command
through Vixie Cron. This requires resource limits to be in place on the
machine.

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 "gt;=sys-process/vixie-cron-4.1-r9"

References
==========

[ 1 ] CVE-2006-2607
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2607

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

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

http://security.gentoo.org/glsa/glsa-200606-07.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
http://bugs.gentoo.org.

License
=======

Copyright 2006 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