[ GLSA 200802-07 ] Pulseaudio: Privilege escalation
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Gentoo Linux Security Advisory GLSA 200802-07
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http://security.gentoo.org/
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Severity: High
Title: Pulseaudio: Privilege escalation
Date: February 13, 2008
Bugs: #207214
ID: 200802-07
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Synopsis
========
A vulnerability in pulseaudio may allow a local user to execute actions
with escalated privileges.
Background
==========
Pulseaudio is a networked sound server with an advanced plugin system.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 media-sound/pulseaudio < 0.9.9 >= 0.9.9
Description
===========
Marcus Meissner from SUSE reported that the pa_drop_root() function
does not properly check the return value of the system calls setuid(),
seteuid(), setresuid() and setreuid() when dropping its privileges.
Impact
======
A local attacker could cause a resource exhaustion to make the system
calls fail, which would cause Pulseaudio to run as root. The attacker
could then perform actions with root privileges.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Pulseaudio users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=media-sound/pulseaudio-0.9.9"
References
==========
[ 1 ] CVE-2008-0008
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0008
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200802-07.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 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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