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[gentoo-announce] [ GLSA 201207-07 ] Keepalived: Denial of Service

Posted on 10 July 2012
Gentoo-announce

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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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