Red Hat Linux IPTables Firewall Failure Vulnerability
Sun have released fixes to address this vulnerability in Sun Linux 5.0.7. Users who are affected by this issue are advised to apply relevant fixes as soon as possible. Please see Sun reference (Sun Linux Support - Sun Linux Patches (Sun)) for further details regarding obtaining and applying appropriate fixes.
Red Hat Linux has released an advisory (RHSA-2003:213-01) to address this issue. See the referenced advisory for further details regarding applying fixes.
Sun Linux 5.0.7