GLSA 200405-23: Heimdal: Kerberos 4 buffer overflow in kadmin
Posted on: 05/27/2004 08:44 AM

A Heimdal update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200405-23
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http://security.gentoo.org/
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Severity: High
Title: Heimdal: Kerberos 4 buffer overflow in kadmin
Date: May 27, 2004
Bugs: #50208
ID: 200405-23

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Synopsis
=======

A possible buffer overflow in the Kerberos 4 component of Heimdal has been discovered.

Background
=========

Heimdal is a free implementation of Kerberos.

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

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Package / Vulnerable / Unaffected
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1 app-crypt/heimdal < 0.6.2 >= 0.6.2

Description
==========

A buffer overflow was discovered in kadmind, a server for administrative access to the Kerberos database.

Impact
=====

By sending a specially formatted message to kadmind, a remote attacker may be able to crash kadmind causing a denial of service, or execute arbitrary code with the permissions of the kadmind process.

Workaround
=========

For a temporary workaround, providing you do not require Kerberos 4 support, you may turn off Kerberos 4 kadmin by running kadmind with the --no-kerberos4 option.

Resolution
=========

All Heimdal users should upgrade to the latest stable version:

# emerge sync

# emerge -pv ">=app-crypt/heimdal-0.6.2"
# emerge ">=app-crypt/heimdal-0.6.2"

References
=========

[ 1 ] Heimdal 0.6.2 Release Notice
http://www.pdc.kth.se/heimdal/advisory/2004-05-06/
[ 2 ] CAN-2004-0434
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0434

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

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

http://security.gentoo.org/glsa/glsa-200405-23.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 2004 Gentoo Technologies, 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/1.0


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