Gentoo Linux Security Advisory GLSA 200909-10

                                        http://security.gentoo.org/

Severity: Normal
Title: LMBench: Insecure temporary file usage
Date: September 09, 2009
Bugs: #246015
ID: 200909-10

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
[email protected] 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