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Gentoo Linux Security Advisory                           GLSA 200712-07
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Lookup: Insecure temporary file creation
      Date: December 09, 2007
      Bugs: #197306
        ID: 200712-07

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Synopsis
========

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

Background
==========

Lookup is a search interface to books and dictionnaries for Emacs.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  app-emacs/lookup       < 1.4.1                           >= 1.4.1

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

Tatsuya Kinoshita reported that the ndeb-binary function does not
handle temporay files correctly.

Impact
======

A local attacker could use a symlink attack to overwrite files with the
privileges of the user running Lookup.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Lookup users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-emacs/lookup-1.4.1"

References
==========

  [ 1 ] CVE-2007-0237
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0237

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

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

  http://security.gentoo.org/glsa/glsa-200712-07.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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