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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 <= 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@xxxxxxxxxx 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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