Cisco IOS 11.1 through 12.2, when HSRP support is not enabled, allows remote attackers to cause a denial of service (CPU consumption) via randomly sized UDP packets to the Hot Standby Routing Protocol (HSRP) port 1985.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 11.1 (including) | 11.1 (including) |
| Ios | Cisco | 11.2 (including) | 11.2 (including) |
| Ios | Cisco | 12.0 (including) | 12.0 (including) |
| Ios | Cisco | 12.1 (including) | 12.1 (including) |
| Ios | Cisco | 12.2 (including) | 12.2 (including) |