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Gentoo Linux Security Advisory                           GLSA 200909-10
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                                            https://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:

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

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.

https://creativecommons.org/licenses/by-sa/2.5/