Date: Wed, 13 Feb 2008 23:54:56 +0100
From: Pierre-Yves Rofes <py@gentoo.org.>
To: [email protected]Subject: [ GLSA 200802-07 ] Pulseaudio: Privilege escalation
X-Enigmail-Version: 0.95.5
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: antivirus-gw at tyumen.ru
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200802-07
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: Pulseaudio: Privilege escalation
Date: February 13, 2008
Bugs: #207214
ID: 200802-07
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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
=================
-------------------------------------------------------------------
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
[email protected] 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.7 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFHs3VAuhJ+ozIKI5gRArmoAJ9SCqxjbnAssnUt34QI8HtpLXzg8QCfQ1tl
25xRVcl7FL2lc0RTu8mGqgo=
=cDWF
-----END PGP SIGNATURE-----
