[ GLSA 200909-10 ] LMBench: Insecure temporary file usage

[Alex Legler <a3li () gentoo org>]

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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 () gentoo org 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

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