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Gentoo Linux Security Advisory                           GLSA 201006-21
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                                            https://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
================
    -------------------------------------------------------------------
     Package             /   Vulnerable   /                 Unaffected
    -------------------------------------------------------------------
  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
          [ 2 ] UnrealIRCd Security Advisory 20100612
        
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/201006-21

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
https://bugs.gentoo.org.

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.

https://creativecommons.org/licenses/by-sa/2.5/