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MIT Kerberos 5: Arbitrary Remote Code Execution



MIT Kerberos 5: Arbitrary Remote Code Execution
MIT Kerberos 5: Arbitrary Remote Code Execution



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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@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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