Cisco IOS XE 2.1.0 through 2.4.3 and 2.5.0 on ASR 1000 devices, when NAT Application Layer Gateway is used, allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted SIP packet, aka Bug IDs CSCta74749 and CSCta77008.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios_xe | Cisco | 2.1.0 (including) | 2.1.0 (including) |
| Ios_xe | Cisco | 2.1.1 (including) | 2.1.1 (including) |
| Ios_xe | Cisco | 2.1.2 (including) | 2.1.2 (including) |
| Ios_xe | Cisco | 2.1.3 (including) | 2.1.3 (including) |
| Ios_xe | Cisco | 2.2.1 (including) | 2.2.1 (including) |
| Ios_xe | Cisco | 2.2.2 (including) | 2.2.2 (including) |
| Ios_xe | Cisco | 2.2.3 (including) | 2.2.3 (including) |
| Ios_xe | Cisco | 2.3.0 (including) | 2.3.0 (including) |
| Ios_xe | Cisco | 2.3.0t (including) | 2.3.0t (including) |
| Ios_xe | Cisco | 2.3.1t (including) | 2.3.1t (including) |
| Ios_xe | Cisco | 2.3.2 (including) | 2.3.2 (including) |
| Ios_xe | Cisco | 2.4.0 (including) | 2.4.0 (including) |
| Ios_xe | Cisco | 2.4.1 (including) | 2.4.1 (including) |
| Ios_xe | Cisco | 2.4.2 (including) | 2.4.2 (including) |
| Ios_xe | Cisco | 2.4.3 (including) | 2.4.3 (including) |
| Ios_xe | Cisco | 2.5.0 (including) | 2.5.0 (including) |