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Gentoo Linux Security Advisory                           GLSA 200909-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: LMBench: Insecure temporary file usage
      Date: September 09, 2009
      Bugs: #246015
        ID: 200909-10

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Synopsis
========

Multiple insecure temporary file usage issues have been reported in
LMBench, allowing for symlink attacks.

Background
==========

LMBench is a suite of simple, portable benchmarks for UNIX platforms.

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  app-benchmarks/lmbench        <= 3                    Vulnerable!
    -------------------------------------------------------------------
     NOTE: Certain packages are still vulnerable. Users should migrate
           to another package if one is available or wait for the
           existing packages to be marked stable by their
           architecture maintainers.

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

Dmitry E. Oboukhov reported that the rccs and STUFF scripts do not
handle "/tmp/sdiff.#####" temporary files securely. NOTE: There might
be further occurances of insecure temporary file usage.

Impact
======

A local attacker could perform symlink attacks to overwrite arbitrary
files with the privileges of the user running the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

LMBench has been removed from Portage. We recommend that users unmerge
LMBench:

    # emerge --unmerge app-benchmarks/lmbench

References
==========

  [ 1 ] CVE-2008-4968
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4968

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

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

  http://security.gentoo.org/glsa/glsa-200909-10.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