TITLE:
mgdiff Patch Viewer Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA17299

VERIFY ADVISORY:
http://secunia.com/advisories/17299/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
mgdiff Patch Viewer
http://secunia.com/product/5962/

DESCRIPTION:
Javier Fernandez-Sanguino Pena has reported a vulnerability in mgdiff
Patch Viewer, which can be exploited by malicious, local users to
perform certain actions on a vulnerable system with escalated
privileges.

The vulnerability is caused due to "viewpatch" script creating
temporary files insecurely in "/tmp". This can be exploited via
symlink attacks to create or overwrite arbitrary files with the
privileges of the user running the affected script.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
Javier Fernandez-Sanguino Pena

ORIGINAL ADVISORY:
Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=335188

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