A security update for UnrealIRCd in Gentoo is available after the included version was compromised with a backdoor trojan
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Gentoo Linux Security Advisory GLSA 201006-21
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http://security.gentoo.org/
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Severity: High
Title: UnrealIRCd: Multiple vulnerabilities
Date: June 14, 2010
Bugs: #260806, #323691
ID: 201006-21
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Synopsis
========
Multiple vulnerabilities in UnrealIRCd might allow remote attackers to compromise the "unrealircd" account, or cause a Denial of Service.
Background
==========
UnrealIRCd is an Internet Relay Chat (IRC) daemon.
Affected packages
=================
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Package / Vulnerable / Unaffected
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1 net-irc/unrealircd < 3.2.8.1-r1 >= 3.2.8.1-r1
Description
===========
Multiple vulnerabilities have been reported in UnrealIRCd:
* The vendor reported a buffer overflow in the user authorization code.
* The vendor reported that the distributed source code of UnrealIRCd was compromised and altered to include a system() call that could be called with arbitrary user input.
Impact
======
A remote attacker could exploit these vulnerabilities to cause the execution of arbitrary commands with the privileges of the user running UnrealIRCd, or a Denial of Service condition. NOTE: By default UnrealIRCd on Gentoo is run with the privileges of the "unrealircd"
user.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All UnrealIRCd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/unrealircd-3.2.8.1-r1"
References
==========
[ 1 ] UnrealIRCd Security Advisory 20090413
http://www.unrealircd.com/txt/unrealsecadvisory.20090413.txt
[ 2 ] UnrealIRCd Security Advisory 20100612
http://www.unrealircd.com/txt/unrealsecadvisory.20100612.txt
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201006-21.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 Gentoo Bugzilla Main Page
License
=======
Copyright 2010 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.
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