full-disclosure - [ GLSA 200803-11 ] Vobcopy: Insecure temporary file creation

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Message-ID: <47CF23B3.9040808@gentoo.org>
Date: Wed, 05 Mar 2008 23:50:27 +0100
From: Pierre-Yves Rofes <py@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200803-11 ] Vobcopy: Insecure temporary
	file creation

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Gentoo Linux Security Advisory                           GLSA 200803-11
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Vobcopy: Insecure temporary file creation
      Date: March 05, 2008
      Bugs: #197578
        ID: 200803-11

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Synopsis
========

Vobcopy uses temporary files in an insecure manner, allowing for a
symlink attack.

Background
==========

Vobcopy is a tool for decrypting and copying DVD .vob files to a hard
disk.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  media-video/vobcopy       < 1.1.0                        >= 1.1.0

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

Joey Hess reported that vobcopy appends data to the file
"/tmp/vobcopy.bla" in an insecure manner.

Impact
======

A local attacker could exploit this vulnerability to conduct symlink
attacks and append data to arbitrary files with the privileges of the
user running Vobcopy.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Vobcopy users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-video/vobcopy-1.1.0"

References
==========

  [ 1 ] CVE-2007-5718
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5718

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

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

  http://security.gentoo.org/glsa/glsa-200803-11.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 2008 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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