Date: Thu, 27 May 2004 08:26:28 -0400
From: Kurt Lieber <klieber@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200405-23 ] Heimdal: Kerberos 4 buffer overflow in kadmin
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com,
security-alerts@linuxsecurity.com
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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
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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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