Description
Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.6(Rel), when configured with all tunnel mode, can be forced into acknowledging a TCP packet from outside the tunnel.
References
- cisco-vpn-tcp-filter(10047) vdb-entry
- 5651 vdb-entry
- 20020905 Cisco VPN Client Multiple Vulnerabilities - Second Set vendor-advisory