Nokia Firewall Appliances running IPSO 3.3 and VPN-1/FireWall-1 4.1 Service Pack 3, IPSO 3.4 and VPN-1/FireWall-1 4.1 Service Pack 4, and IPSO 3.4 or IPSO 3.4.1 and VPN-1/FireWall-1 4.1 Service Pack 5, when SYN Defender is configured in Active Gateway mode, does not properly rewrite the third packet of a TCP three-way handshake to use the NAT IP address, which allows remote attackers to gain sensitive information.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firewall-1 | Checkpoint | 4.1-sp3 (including) | 4.1-sp3 (including) |
| Firewall-1 | Checkpoint | 4.1-sp4 (including) | 4.1-sp4 (including) |
| Firewall-1 | Checkpoint | 4.1-sp5 (including) | 4.1-sp5 (including) |
| Vpn-1 | Checkpoint | 4.1-sp3 (including) | 4.1-sp3 (including) |
| Vpn-1 | Checkpoint | 4.1-sp4 (including) | 4.1-sp4 (including) |