[Full-disclosure] [ GLSA 200701-21 ] MIT Kerberos 5: Arbitrary Remote Code Execution

[Matthias Geerdsen]

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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
========

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

Background
==========

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

Affected packages
=================

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  app-crypt/mit-krb5       < 1.5.2                         >= 1.5.2

Description
===========

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
======

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

Workaround
==========

There is no known workaround at this time.

Resolution
==========

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

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

References
==========

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

Availability
============

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?
=========

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 at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

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


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