glsa-200903-39.xml


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

<glsa id="200903-39">
  <title>pam_krb5: Privilege escalation</title>
  <synopsis>
    Two vulnerabilities in pam_krb5 might allow local users to elevate their
    privileges or overwrite arbitrary files.
  </synopsis>
  <product type="ebuild">pam_krb5</product>
  <announced>March 25, 2009</announced>
  <revised>March 25, 2009: 01</revised>
  <bug>257075</bug>
  <access>local</access>
  <affected>
    <package name="sys-auth/pam_krb5" auto="yes" arch="*">
      <unaffected range="ge">3.12</unaffected>
      <vulnerable range="lt">3.12</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    pam_krb5 is a a Kerberos v5 PAM module.
    </p>
  </background>
  <description>
    <p>
    The following vulnerabilities were discovered:
    </p>
    <ul><li>pam_krb5
    does not properly initialize the Kerberos libraries for setuid use
    (CVE-2009-0360).</li>
    <li>Derek Chan reported that calls to
    pam_setcred() are not properly handled when running setuid
    (CVE-2009-0361).</li>
    </ul>
  </description>
  <impact type="high">
    <p>
    A local attacker could set an environment variable to point to a
    specially crafted Kerberos configuration file and launch a PAM-based
    setuid application to elevate privileges, or change ownership and
    overwrite arbitrary files.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All pam_krb5 users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=sys-auth/pam_krb5-3.12&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0360">CVE-2009-0360</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0361">CVE-2009-0361</uri>
  </references>
  <metadata tag="requester" timestamp="Thu, 05 Mar 2009 20:23:59 +0000">
    keytoaster
  </metadata>
  <metadata tag="submitter" timestamp="Mon, 09 Mar 2009 12:57:24 +0000">
    p-y
  </metadata>
  <metadata tag="bugReady" timestamp="Mon, 09 Mar 2009 12:57:36 +0000">
    p-y
  </metadata>
</glsa>