Cisco IOS 12.1, 12.2, 12.3, and 12.4, with IPv4 UDP services and the IPv6 protocol enabled, allows remote attackers to cause a denial of service (device crash and possible blocked interface) via a crafted IPv6 packet to the device.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Cisco_ios | Cisco | 12.3 (including) | 12.3 (including) |
| Cisco_ios | Cisco | 12.4 (including) | 12.4 (including) |
| Ios | Cisco | 12.1 (including) | 12.1 (including) |
| Ios | Cisco | 12.2 (including) | 12.2 (including) |