[ GLSA 200903-02 ] ZNC: Privilege escalation

[Tobias Heinlein <keytoaster () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200903-02
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                                            http://security.gentoo.org/
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  Severity: High
     Title: ZNC: Privilege escalation
      Date: March 06, 2009
      Bugs: #260148
        ID: 200903-02

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Synopsis
========

A vulnerability in ZNC allows for privilege escalation.

Background
==========

ZNC is an advanced IRC bouncer.

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

    -------------------------------------------------------------------
     Package      /  Vulnerable  /                          Unaffected
    -------------------------------------------------------------------
  1  net-irc/znc       < 0.066                                >= 0.066

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

cnu discovered multiple CRLF injection vulnerabilities in ZNC's
webadmin module.

Impact
======

A remote authenticated attacker could modify the znc.conf configuration
file and gain privileges via newline characters in e.g. the QuitMessage
field, and possibly execute arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All ZNC users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-irc/znc-0.066"

References
==========

  [ 1 ] CVE-2009-0759
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0759

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

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

  http://security.gentoo.org/glsa/glsa-200903-02.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 2009 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/2.5

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