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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