GLSA 200503-27: Xzabite dyndnsupdate: Multiple vulnerabilities
Posted on: 03/21/2005 01:48 PM

A Xzabite dyndnsupdate security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200503-27
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http://security.gentoo.org/
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Severity: Normal
Title: Xzabite dyndnsupdate: Multiple vulnerabilities
Date: March 21, 2005
Bugs: #84659
ID: 200503-27

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Synopsis
=======

Xzabite's dyndnsupdate software suffers from multiple vulnerabilities, potentially resulting in the remote execution of arbitrary code.

Background
=========

dyndnsupdate is a dyndns.org data updater written by Fredrik "xzabite" Haglund.

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

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Package / Vulnerable / Unaffected
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1 net-misc/dyndnsupdate lt;= 0.6.15 Vulnerable!
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NOTE: Certain packages are still vulnerable. Users should migrate to another package if one is available or wait for the existing packages to be marked stable by their architecture maintainers.

Description
==========

Toby Dickenson discovered that dyndnsupdate suffers from multiple overflows.

Impact
=====

A remote attacker, posing as a dyndns.org server, could execute arbitrary code with the rights of the user running dyndnsupdate.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

Currently, there is no released version of dyndnsupdate that contains a fix for these issues. The original xzabite.org distribution site is dead, the code contains several other problems and more secure alternatives exist, such as the net-dns/ddclient package. Therefore, the dyndnsupdate package has been hard-masked prior to complete removal from Portage, and current users are advised to unmerge the package:

# emerge --unmerge net-misc/dyndnsupdate

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

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

http://security.gentoo.org/glsa/glsa-200503-27.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 2005 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


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