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Gentoo Linux Security Advisory                           GLSA 200411-20
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                                            http://security.gentoo.org/
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  Severity: High
     Title: ez-ipupdate: Format string vulnerability
      Date: November 11, 2004
      Bugs: #69658
        ID: 200411-20

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Synopsis
========

ez-ipupdate contains a format string vulnerability that could lead to
execution of arbitrary code.

Background
==========

ez-ipupdate is a utility for updating host name information for a large
number of dynamic DNS services.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-dns/ez-ipupdate      <= 3.0.11_beta8       >= 3.0.11_beta8-r1

Description
===========

Ulf Harnhammar from the Debian Security Audit Project discovered a
format string vulnerability in ez-ipupdate.

Impact
======

An attacker could exploit this to execute arbitrary code with the
permissions of the user running ez-ipupdate, which could be the root
user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ez-ipupdate users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
 ">=net-dns/ez-ipupdate-3.0.11_beta8-r1"

References
==========

  [ 1 ] CAN-2004-0980
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0980
  [ 2 ] Full Disclosure Announcement
        028590.html

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

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

  http://security.gentoo.org/glsa/glsa-200411-20.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/2.0