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