TITLE: Net-Acct Insecure Temporary File Creation Vulnerability
SECUNIA ADVISORY ID: SA12476
VERIFY ADVISORY: http://secunia.com/advisories/12476/
CRITICAL: Less critical
IMPACT: Privilege escalation
WHERE: Local system
SOFTWARE: Net-Acct 0.x http://secunia.com/product/3875/
DESCRIPTION: Stefan Nordhausen has discovered a vulnerability in net-acct, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
The "write_list()" and "dump_curr_list()" functions create temporary files insecurely. This can be exploited via symlink attacks to overwrite or create arbitrary files with the privileges of a user executing net-acct.
The vulnerability affects version 0.71 and prior.
SOLUTION: The vendor has issued a patch: http://exorsus.net/projects/net-acct/net-acct-notempfiles.patch
PROVIDED AND/OR DISCOVERED BY: Stefan Nordhausen
ORIGINAL ADVISORY: http://exorsus.net/projects/net-acct/
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