Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.
| Software | From | Fixed in |
|---|---|---|
| cisco / ios | 11.3aa | 11.3aa.x |
| cisco / ios | 11.3db | 11.3db.x |
| cisco / ios | 12.0 | 12.0.x |
| cisco / ios | 12.0(1)w | 12.0(1)w.x |
| cisco / ios | 12.0(1)xa3 | 12.0(1)xa3.x |
| cisco / ios | 12.0(1)xb | 12.0(1)xb.x |
| cisco / ios | 12.0(1)xe | 12.0(1)xe.x |
| cisco / ios | 12.0(2)xc | 12.0(2)xc.x |
| cisco / ios | 12.0(2)xd | 12.0(2)xd.x |
| cisco / ios | 12.0db | 12.0db.x |
| cisco / ios | 12.0s | 12.0s.x |
| cisco / ios | 12.0t | 12.0t.x |