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TITLE:
Mktemp Insecure Random Name Generator Vulnerability

SECUNIA ADVISORY ID:
SA31507

VERIFY ADVISORY:
http://secunia.com/advisories/31507/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Mktemp 1.x
http://secunia.com/product/19583/

DESCRIPTION:
A vulnerability has been reported in Mktemp, which can be exploited
by malicious, local users to perform certain actions with escalated
privileges.

The vulnerability is caused due to the application using the current
pid (process identifier) to create safe temporary files. This can
potentially be exploited to guess the name of temporary files and
perform actions with escalated privileges via e.g. symlink attacks.

The vulnerability is reported in version 1.5. Other versions may also
be affected.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Reported by Dirk Wetter in a Debian bug report.

ORIGINAL ADVISORY:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=495193

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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:
http://secunia.com/secunia_security_advisories/

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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