The SIP channel driver (chan_sip) in Asterisk before 1.2.18 and 1.4.x before 1.4.3 does not properly parse SIP UDP packets that do not contain a valid response code, which allows remote attackers to cause a denial of service (crash).
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Asterisk | Asterisk | 1.2.0_beta1 (including) | 1.2.0_beta1 (including) |
| Asterisk | Asterisk | 1.2.0_beta2 (including) | 1.2.0_beta2 (including) |
| Asterisk | Asterisk | 1.2.10 (including) | 1.2.10 (including) |
| Asterisk | Asterisk | 1.2.11 (including) | 1.2.11 (including) |
| Asterisk | Asterisk | 1.2.12 (including) | 1.2.12 (including) |
| Asterisk | Asterisk | 1.2.13 (including) | 1.2.13 (including) |
| Asterisk | Asterisk | 1.2.14 (including) | 1.2.14 (including) |
| Asterisk | Asterisk | 1.2.15 (including) | 1.2.15 (including) |
| Asterisk | Asterisk | 1.2.16 (including) | 1.2.16 (including) |
| Asterisk | Asterisk | 1.2.17 (including) | 1.2.17 (including) |
| Asterisk | Asterisk | 1.4.1 (including) | 1.4.1 (including) |
| Asterisk | Asterisk | 1.4.2 (including) | 1.4.2 (including) |
| Asterisk | Asterisk | 1.4_beta (including) | 1.4_beta (including) |