Cisco Virtual Private Network (VPN) Client software 2.x.x, and 3.x before 3.5.1C, does not properly verify that certificate DN fields match those of the certificate from the VPN Concentrator, which allows remote attackers to conduct man-in-the-middle attacks.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Vpn_client | Cisco | 2.0 (including) | 2.0 (including) |
| Vpn_client | Cisco | 3.0 (including) | 3.0 (including) |
| Vpn_client | Cisco | 3.1 (including) | 3.1 (including) |
| Vpn_client | Cisco | 3.5.1 (including) | 3.5.1 (including) |