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

[Matthias Geerdsen <vorlon () gentoo org>]

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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 () gentoo 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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