GLSA 200409-19: Heimdal: ftpd root escalation
Posted on: 09/16/2004 05:16 AM

A Heimdal security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200409-19
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http://security.gentoo.org/
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Severity: High
Title: Heimdal: ftpd root escalation
Date: September 16, 2004
Bugs: #61412
ID: 200409-19

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Synopsis
=======

Several bugs exist in the Heimdal ftp daemon which could allow a remote attacker to gain root privileges.

Background
=========

Heimdal is an implementation of Kerberos 5.

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

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Package / Vulnerable / Unaffected
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1 app-crypt/heimdal < 0.6.3 >= 0.6.3

Description
==========

Przemyslaw Frasunek discovered several flaws in lukemftpd, which also apply to Heimdal ftpd's out-of-band signal handling code.

Additionally, a potential vulnerability that could lead to Denial of Service by the Key Distribution Center (KDC) has been fixed in this version.

Impact
=====

A remote attacker could be able to run arbitrary code with escalated privileges, which can result in a total compromise of the server.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All Heimdal users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=app-crypt/heimdal-0.6.3"
# emerge ">=app-crypt/heimdal-0.6.3"

References
=========

[ 1 ] Heimdal advisory
http://www.pdc.kth.se/heimdal/advisory/2004-09-13/
[ 2 ] Advisory by Przemyslaw Frasunek
http://www.frasunek.com/lukemftpd.txt
[ 3 ] CAN-2004-0794
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0794

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

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

http://security.gentoo.org/glsa/glsa-200409-19.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 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/1.0


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