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Gentoo Linux Security Advisory                           GLSA 200802-07
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                                            https://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
================
    -------------------------------------------------------------------
     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:

  https://security.gentoo.org/glsa/200802-07

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 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.

https://creativecommons.org/licenses/by-sa/2.5/
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