Novell Access Management 3 SSLVPN Server allows remote authenticated users to bypass VPN restrictions by making policy.txt read-only, disconnecting, then manually modifying policy.txt.
https://secure-support.novell.com/KanisaPlatform/Publishing/648/3429077_f.SAL_Public.html
http://www.vupen.com/english/advisories/2007/0800
http://www.securitytracker.com/id?1017722