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Gentoo Linux Security Advisory 201207-07

Gentoo Linux Security Advisory 201207-07
Posted Jul 10, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201207-7 - Keepalived uses world-writable PID files, allowing a local attacker to kill arbitrary processes. Versions less than 1.2.2-r3 are affected.

tags | advisory, arbitrary, local
systems | linux, gentoo
advisories | CVE-2011-1784
SHA-256 | f2d5ab163bea57e36eb2e3461b8c01c26c5adf484fffb286998715e8921fface

Gentoo Linux Security Advisory 201207-07

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 201207-07
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http://security.gentoo.org/
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Severity: Normal
Title: Keepalived: Denial of Service
Date: July 09, 2012
Bugs: #371469
ID: 201207-07

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Synopsis
========

Keepalived uses world-writable PID files, allowing a local attacker to
kill arbitrary processes.

Background
==========

Keepalived is a strong & robust keepalive facility to the Linux Virtual
Server project.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-cluster/keepalived < 1.2.2-r3 >= 1.2.2-r3

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

The "pidfile_write()" function in pidfile.c in Keepalived writes PID
files with insecure permissions.

Impact
======

A local attacker may be able to cause a Denial of Service of arbitrary
processes.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Keepalived users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot -v ">=sys-cluster/keepalived-1.2.2-r3"

References
==========

[ 1 ] CVE-2011-1784
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1784

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

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

http://security.gentoo.org/glsa/glsa-201207-07.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
https://bugs.gentoo.org.

License
=======

Copyright 2012 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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