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Gentoo Linux Security Advisory                           GLSA 200701-21
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                                            http://security.gentoo.org/
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  Severity: High
     Title: MIT Kerberos 5: Arbitrary Remote Code Execution
      Date: January 24, 2007
      Bugs: #158810
        ID: 200701-21

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Synopsis
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Multiple vulnerabilities in MIT Kerberos 5 could potentially result in
the execution of arbitrary code.

Background
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MIT Kerberos 5 is a suite of applications that implement the Kerberos
network protocol.

Affected packages
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    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  app-crypt/mit-krb5       < 1.5.2                         >=3D 1.5.2

Description
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The Kerberos administration daemon, and possibly other applications
using the GSS-API or RPC libraries, could potentially call a function
pointer in a freed heap buffer, or attempt to free an uninitialized
pointer.

Impact
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A remote attacker may be able to crash an affected application, or
potentially execute arbitrary code with root privileges.

Workaround
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There is no known workaround at this time.

Resolution
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All MIT Kerberos 5 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=3Dapp-crypt/mit-krb5-1.5.2"

References
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  [ 1 ] CVE-2006-6143
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2006-6143
  [ 2 ] CVE-2006-6144
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2006-6144

Availability
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This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200701-21.xml

Concerns?
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Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
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Copyright 2007 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5