glsa-200802-07.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">

<glsa id="200802-07">
  <title>Pulseaudio: Privilege escalation</title>
  <synopsis>
    A vulnerability in pulseaudio may allow a local user to execute actions
    with escalated privileges.
  </synopsis>
  <product type="ebuild">pulseaudio</product>
  <announced>February 13, 2008</announced>
  <revised>February 13, 2008: 01</revised>
  <bug>207214</bug>
  <access>local</access>
  <affected>
    <package name="media-sound/pulseaudio" auto="yes" arch="*">
      <unaffected range="ge">0.9.9</unaffected>
      <vulnerable range="lt">0.9.9</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Pulseaudio is a networked sound server with an advanced plugin system.
    </p>
  </background>
  <description>
    <p>
    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.
    </p>
  </description>
  <impact type="high">
    <p>
    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.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Pulseaudio users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=media-sound/pulseaudio-0.9.9&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0008">CVE-2008-0008</uri>
  </references>
  <metadata tag="requester" timestamp="Mon, 11 Feb 2008 18:33:13 +0000">
    jaervosz
  </metadata>
  <metadata tag="bugReady" timestamp="Mon, 11 Feb 2008 18:33:32 +0000">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="Wed, 13 Feb 2008 20:35:58 +0000">
    p-y
  </metadata>
</glsa>