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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200907-13">
+ <title>PulseAudio: Local privilege escalation</title>
+ <synopsis>
+ A vulnerability in PulseAudio may allow a local user to execute code with
+ escalated privileges.
+ </synopsis>
+ <product type="ebuild">pulseaudio</product>
+ <announced>2009-07-16</announced>
+ <revised count="01">2009-07-16</revised>
+ <bug>276986</bug>
+ <access>local</access>
+ <affected>
+ <package name="media-sound/pulseaudio" auto="yes" arch="*">
+ <unaffected range="ge">0.9.9-r54</unaffected>
+ <vulnerable range="lt">0.9.9-r54</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ PulseAudio is a network-enabled sound server with an advanced plug-in
+ system.
+ </p>
+ </background>
+ <description>
+ <p>
+ 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.
+ </p>
+ </description>
+ <impact type="high">
+ <p>
+ 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.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ Ensure that the file system holding /usr/bin does not contain
+ directories that are writable for unprivileged users.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ All PulseAudio users should upgrade to the latest version:
+ </p>
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose "&gt;=media-sound/pulseaudio-0.9.9-r54"</code>
+ </resolution>
+ <references>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1894">CVE-2009-1894</uri>
+ </references>
+ <metadata tag="requester" timestamp="2009-07-09T16:33:42Z">
+ rbu
+ </metadata>
+ <metadata tag="submitter" timestamp="2009-07-09T16:51:52Z">
+ rbu
+ </metadata>
+ <metadata tag="bugReady" timestamp="2009-07-16T14:13:15Z">
+ rbu
+ </metadata>
+</glsa>