Gentoo Logo
Gentoo Spaceship




Note: Due to technical difficulties, the Archives are currently not up to date. GMANE provides an alternative service for most mailing lists.
c.f. bug 424647
List Archive: gentoo-announce
Navigation:
Lists: gentoo-announce: < Prev By Thread Next > < Prev By Date Next >
Headers:
To: gentoo-announce@g.o
From: Alex Legler <a3li@g.o>
Subject: [ GLSA 200909-13 ] irssi: Execution of arbitrary code
Date: Sat, 12 Sep 2009 18:29:10 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200909-13
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: High
     Title: irssi: Execution of arbitrary code
      Date: September 12, 2009
      Bugs: #271875
        ID: 200909-13

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A remotely exploitable off-by-one error leading to a heap overflow was
found in irssi which might result in the execution of arbitrary code.

Background
==========

irssi is a modular textUI IRC client with IPv6 support.

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

    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  net-irc/irssi      < 0.8.13-r1                       >= 0.8.13-r1

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

Nemo discovered an off-by-one error leading to a heap overflow in
irssi's event_wallops() parsing function.

Impact
======

A remote attacker might entice a user to connect to a malicious IRC
server, use a man-in-the-middle attack to redirect a user to such a
server or use ircop rights to send a specially crafted WALLOPS message,
which might result in the execution of arbitrary code with the
privileges of the user running irssi.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All irssi users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =net-irc/irssi-0.8.13-r1

References
==========

  [ 1 ] CVE-2009-1959
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1959

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

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

  http://security.gentoo.org/glsa/glsa-200909-13.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@g.o or alternatively, you may file a bug at
https://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
Attachment:
signature.asc (PGP signature)
Navigation:
Lists: gentoo-announce: < Prev By Thread Next > < Prev By Date Next >
Previous by thread:
[ GLSA 200909-12 ] HTMLDOC: User-assisted execution of arbitrary code
Next by thread:
[ GLSA 200909-14 ] Horde: Multiple vulnerabilities
Previous by date:
[ GLSA 200909-12 ] HTMLDOC: User-assisted execution of arbitrary code
Next by date:
[ GLSA 200909-14 ] Horde: Multiple vulnerabilities


Updated Jun 25, 2012

Summary: Archive of the gentoo-announce mailing list.

Donate to support our development efforts.

Copyright 2001-2013 Gentoo Foundation, Inc. Questions, Comments? Contact us.