GLSA-200907-13 : PulseAudio: Local privilege escalation

High Nessus Plugin ID 39848


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200907-13 (PulseAudio: Local privilege escalation)

Tavis Ormandy and Julien Tinnes of the Google Security Team discovered that the pulseaudio binary is installed setuid root, and does not drop privileges before re-executing itself. The vulnerability has independently been reported to oCERT by Yorick Koster.
Impact :

A local user who has write access to any directory on the file system containing /usr/bin can exploit this vulnerability using a race condition to execute arbitrary code with root privileges.
Workaround :

Ensure that the file system holding /usr/bin does not contain directories that are writable for unprivileged users.


All PulseAudio users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-sound/pulseaudio-0.9.9-r54'

See Also

Plugin Details

Severity: High

ID: 39848

File Name: gentoo_GLSA-200907-13.nasl

Version: $Revision: 1.11 $

Type: local

Published: 2009/07/17

Modified: 2016/04/28

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:ND/RC:ND

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:pulseaudio, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2009/07/16

Exploitable With

Core Impact

Reference Information

CVE: CVE-2009-1894

OSVDB: 56104

GLSA: 200907-13

CWE: 362