glsa-200709-01.xml


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

<glsa id="200709-01">
  <title>MIT Kerberos 5: Multiple vulnerabilities</title>
  <synopsis>
    Two vulnerabilities have been found in MIT Kerberos 5, which could allow a
    remote unauthenticated user to execute arbitrary code with root privileges.
  </synopsis>
  <product type="ebuild">mit-krb5</product>
  <announced>September 11, 2007</announced>
  <revised>September 11, 2007: 01</revised>
  <bug>191301</bug>
  <access>remote</access>
  <affected>
    <package name="app-crypt/mit-krb5" auto="yes" arch="*">
      <unaffected range="ge">1.5.3-r1</unaffected>
      <vulnerable range="lt">1.5.3-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    MIT Kerberos 5 is a suite of applications that implement the Kerberos
    network protocol. kadmind is the MIT Kerberos 5 administration daemon.
    </p>
  </background>
  <description>
    <p>
    A stack buffer overflow (CVE-2007-3999) has been reported in
    svcauth_gss_validate() of the RPC library of kadmind. Another
    vulnerability (CVE-2007-4000) has been found in
    kadm5_modify_policy_internal(), which does not check the return values
    of krb5_db_get_policy() correctly.
    </p>
  </description>
  <impact type="high">
    <p>
    The RPC related vulnerability can be exploited by a remote
    unauthenticated attacker to execute arbitrary code with root privileges
    on the host running kadmind. The second vulnerability requires the
    remote attacker to be authenticated and to have "modify policy"
    privileges. It could then also allow for the remote execution of
    arbitrary code.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All MIT Kerberos 5 users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=app-crypt/mit-krb5-1.5.3-r1&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3999">CVE-2007-3999</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4000">CVE-2007-4000</uri>
  </references>
  <metadata tag="requester" timestamp="Sat, 08 Sep 2007 22:29:04 +0000">
    p-y
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 09 Sep 2007 19:22:20 +0000">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="Mon, 10 Sep 2007 18:34:17 +0000">
    vorlon
  </metadata>
</glsa>