Description
NCP Secure Enterprise Client (aka VPN/PKI client) 8.30 Build 59, and possibly earlier versions, when the Link Firewall and Personal Firewall are both configured to block all inbound and outbound network traffic, allows context-dependent attackers to send inbound UDP traffic with source port 67 and destination port 68, and outbound UDP traffic with source port 68 and destination port 67.
References
- ncp-vpnpki-udp-bypass-security(27484) vdb-entry
- 20060630 NCP VPN/PKI Client: UDP Bypassing mailing-list