glsa-200704-02.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200704-02">
  <title>MIT Kerberos 5: Arbitrary remote code execution</title>
  <synopsis>
    Multiple vulnerabilities in MIT Kerberos 5 could potentially result in
    unauthenticated remote root code execution.
  </synopsis>
  <product type="ebuild">mit-krb5</product>
  <announced>2007-04-03</announced>
  <revised count="01">2007-04-03</revised>
  <bug>171889</bug>
  <access>remote</access>
  <affected>
    <package name="app-crypt/mit-krb5" auto="yes" arch="*">
      <unaffected range="ge">1.5.2-r1</unaffected>
      <vulnerable range="lt">1.5.2-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    MIT Kerberos 5 is a suite of applications that implement the Kerberos
    network protocol.
    </p>
  </background>
  <description>
    <p>
    The Kerberos telnet daemon fails to properly handle usernames allowing
    unauthorized access to any account (CVE-2007-0956). The Kerberos
    administration daemon, the KDC and possibly other applications using
    the MIT Kerberos libraries are vulnerable to the following issues. The
    krb5_klog_syslog function from the kadm5 library fails to properly
    validate input leading to a stack overflow (CVE-2007-0957). The GSS-API
    library is vulnerable to a double-free attack (CVE-2007-1216).
    </p>
  </description>
  <impact type="high">
    <p>
    By exploiting the telnet vulnerability a remote attacker may obtain
    access with root privileges. The remaining vulnerabilities may allow an
    authenticated remote attacker to execute arbitrary code with root
    privileges.
    </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 "&gt;=app-crypt/mit-krb5-1.5.2-r1"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0956">CVE-2007-0956</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0957">CVE-2007-0957</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1216">CVE-2007-1216</uri>
  </references>
  <metadata tag="submitter" timestamp="2007-04-02T16:29:27Z">
    jaervosz
  </metadata>
  <metadata tag="bugReady" timestamp="2007-04-03T20:30:58Z">
    vorlon
  </metadata>
</glsa>