bugtraq - [ GLSA 200903-02 ] ZNC: Privilege escalation

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Message-ID: <49B1A52F.6000904@gentoo.org>
Date: Fri, 06 Mar 2009 23:35:27 +0100
From: Tobias Heinlein <keytoaster@...too.org>
To: gentoo-announce@...too.org
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200903-02 ] ZNC: Privilege escalation

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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@...too.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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