Firewall Builder 3.0.4, 3.0.5, and 3.0.6, when running on Linux, allows local users to gain privileges via a symlink attack on an unspecified temporary file that is created by the iptables script.
Gentoo Linux Security Advisory 201201-11 - Insecure temporary file usage in Firewall Builder could allow attackers to overwrite arbitrary files. Versions less than 3.0.7 are affected.