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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

Download and test it today:
https://psi.secunia.com/

Read more about this new version:
https://psi.secunia.com/?page=changelog

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TITLE:
PatchLink Update Client for Unix Insecure Temporary Files

SECUNIA ADVISORY ID:
SA28665

VERIFY ADVISORY:
http://secunia.com/advisories/28665/

CRITICAL:
Less critical

IMPACT:
Manipulation of data, Privilege escalation

WHERE:
Local system

SOFTWARE:
PatchLink Update 6.x
http://secunia.com/product/3690/

DESCRIPTION:
Larry W. Cashdollar has reported two security issues in the PatchLink
Update client for Unix, which can be exploited by malicious, local
users to truncate arbitrary files and to gain escalated privileges.

1) The "logtrimmer" utility uses the "/tmp/patchlink.tmp" temporary
file in an insecure manner, which can be exploited to truncate
arbitrary files via symlink attacks.

2) The "rebootTask" script uses the "/tmp/plshutdown" temporary file
in an insecure manner, which can be exploited via symlink attacks in
combination with a race condition to execute arbitrary commands with
root privileges.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Larry W. Cashdollar

ORIGINAL ADVISORY:
http://seclists.org/bugtraq/2008/Jan/0376.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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