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Gentoo Linux Security Advisory                           GLSA 200709-02
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: KVIrc: Remote arbitrary code execution
      Date: September 13, 2007
      Bugs: #183174
        ID: 200709-02

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Synopsis
========

A vulnerability has been discovered in KVIrc, allowing for the remote
execution of arbitrary code.

Background
==========

KVIrc is a free portable IRC client based on Qt.

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

    -------------------------------------------------------------------
     Package        /       Vulnerable       /              Unaffected
    -------------------------------------------------------------------
  1  net-irc/kvirc      < 3.2.6_pre20070714       >= 3.2.6_pre20070714

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

Stefan Cornelius from Secunia Research discovered that the
"parseIrcUrl()" function in file src/kvirc/kernel/kvi_ircurl.cpp does
not properly sanitise parts of the URI when building the command for
KVIrc's internal script system.

Impact
======

A remote attacker could entice a user to open a specially crafted
irc:// URI, possibly leading to the remote execution of arbitrary code
with the privileges of the user running KVIrc. Successful exploitation
requires that KVIrc is registered as the default handler for irc:// or
similar URIs.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All KVIrc users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
 ">=net-irc/kvirc-3.2.6_pre20070714"

References
==========

  [ 1 ] CVE-2007-2951
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2951

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

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

  http://security.gentoo.org/glsa/glsa-200709-02.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 2007 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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