TITLE:
GRASS Multiple Scripts Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA13693

VERIFY ADVISORY:
http://secunia.com/advisories/13693/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
GRASS 5.7.x
http://secunia.com/product/4471/

DESCRIPTION:
Javier Fernández-Sanguino Peña has reported multiple vulnerabilities
in GRASS, which can be exploited by malicious, local users to perform
certain actions on a vulnerable system with escalated privileges.

The vulnerabilities are caused due to multiple scripts creating
temporary files insecurely. This can be exploited via symlink attacks
to overwrite arbitrary files with the privileges of the user running a
vulnerable script.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
Javier Fernández-Sanguino Peña

ORIGINAL ADVISORY:
http://intevation.de/rt/webrt?serial_num=2877

----------------------------------------------------------------------

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.

----------------------------------------------------------------------