Secunia Security Advisory - Eric Romang has reported a vulnerability in GIPTables Firewall, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
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TITLE:
GIPTables Firewall Insecure Temporary File Creation
SECUNIA ADVISORY ID:
SA15604
VERIFY ADVISORY:
http://secunia.com/advisories/15604/
CRITICAL:
Not critical
IMPACT:
Privilege escalation
WHERE:
Local system
SOFTWARE:
GIPTables Firewall 1.x
http://secunia.com/product/5214/
DESCRIPTION:
Eric Romang has reported a vulnerability in GIPTables Firewall, 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 temporary files being created
insecurely. This can be exploited via symlink attacks in combination
with a race condition to create or overwrite arbitrary files with the
privileges of the user configuring the firewall rules.
The vulnerability has been reported in version 1.1 and prior.
SOLUTION:
Grant only trusted users access to affected systems.
PROVIDED AND/OR DISCOVERED BY:
Eric Romang, ZATAZ Audit
ORIGINAL ADVISORY:
http://www.zataz.net/adviso/giptables-05222005.txt
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