full-disclosure - [ GLSA 200611-17 ] fvwm: fvwm-menu-directory fvwm command injection

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Date: Thu, 23 Nov 2006 21:52:17 +0100
From: Matthias Geerdsen <vorlon@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200611-17 ] fvwm: fvwm-menu-directory fvwm
	command injection

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Gentoo Linux Security Advisory                           GLSA 200611-17
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: fvwm: fvwm-menu-directory fvwm command injection
      Date: November 23, 2006
      Bugs: #155078
        ID: 200611-17

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Synopsis
========

A flaw in fvwm-menu-directory may permit a local attacker to execute
arbitrary commands with the privileges of another user.

Background
==========

fvwm is a highly configurable virtual window manager for X11 desktops.
fvwm-menu-directory allows fvwm users to browse directories from within
fvwm.

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

    -------------------------------------------------------------------
     Package      /   Vulnerable   /                        Unaffected
    -------------------------------------------------------------------
  1  x11-wm/fvwm      < 2.5.18-r1                         >= 2.5.18-r1

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

Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that
fvwm-menu-directory does not sufficiently sanitise directory names
prior to generating menus.

Impact
======

A local attacker who can convince an fvwm-menu-directory user to browse
a directory they control could cause fvwm commands to be executed with
the privileges of the fvwm user. Fvwm commands can be used to execute
arbitrary shell commands.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All fvwm users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=x11-wm/fvwm-2.5.18-r1"

References
==========

  [ 1 ] CVE-2006-5969
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5969

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

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

  http://security.gentoo.org/glsa/glsa-200611-17.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 2006 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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