[ GLSA 200409-19 ] Heimdal: ftpd root escalation

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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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
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  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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