The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x before 1.8.23.1, and 11.x before 11.5.1 and Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2 allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an ACK with SDP to a previously terminated channel. NOTE: some of these details are obtained from third party information.
2013-09-09T17:55:06.237
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | digium | asterisk | 1.8.17.0 | Yes |
| Application | digium | asterisk | 1.8.17.0 | Yes |
| Application | digium | asterisk | 1.8.17.0 | Yes |
| Application | digium | asterisk | 1.8.17.0 | Yes |
| Application | digium | asterisk | 1.8.18.0 | Yes |
| Application | digium | asterisk | 1.8.18.0 | Yes |
| Application | digium | asterisk | 1.8.18.1 | Yes |
| Application | digium | asterisk | 1.8.19.0 | Yes |
| Application | digium | asterisk | 1.8.19.0 | Yes |
| Application | digium | asterisk | 1.8.19.0 | Yes |
| Application | digium | asterisk | 1.8.19.1 | Yes |
| Application | digium | asterisk | 1.8.20.0 | Yes |
| Application | digium | asterisk | 1.8.20.0 | Yes |
| Application | digium | asterisk | 1.8.20.0 | Yes |
| Application | digium | asterisk | 1.8.21.0 | Yes |
| Application | digium | asterisk | 1.8.21.0 | Yes |
| Application | digium | asterisk | 1.8.22.0 | Yes |
| Application | digium | asterisk | 1.8.22.0 | Yes |
| Application | digium | asterisk | 1.8.22.0 | Yes |
| Application | digium | asterisk | 1.8.23.0 | Yes |
| Application | digium | asterisk | 1.8.23.0 | Yes |
| Application | digium | asterisk | 1.8.23.0 | Yes |
| Application | digium | asterisk | 11.0.0 | Yes |
| Application | digium | asterisk | 11.0.0 | Yes |
| Application | digium | asterisk | 11.0.0 | Yes |
| Application | digium | asterisk | 11.0.0 | Yes |
| Application | digium | asterisk | 11.0.0 | Yes |
| Application | digium | asterisk | 11.0.1 | Yes |
| Application | digium | asterisk | 11.0.2 | Yes |
| Application | digium | asterisk | 11.1.0 | Yes |
| Application | digium | asterisk | 11.1.0 | Yes |
| Application | digium | asterisk | 11.1.0 | Yes |
| Application | digium | asterisk | 11.1.1 | Yes |
| Application | digium | asterisk | 11.1.2 | Yes |
| Application | digium | asterisk | 11.2.0 | Yes |
| Application | digium | asterisk | 11.2.0 | Yes |
| Application | digium | asterisk | 11.3.0 | Yes |
| Application | digium | asterisk | 11.3.0 | Yes |
| Application | digium | asterisk | 11.4.0 | Yes |
| Application | digium | asterisk | 11.4.0 | Yes |
| Application | digium | asterisk | 11.4.0 | Yes |
| Application | digium | asterisk | 11.4.0 | Yes |
| Application | digium | asterisk | 11.5.0 | Yes |
| Application | digium | asterisk | 11.5.0 | Yes |
| Application | digium | asterisk | 11.5.0 | Yes |
| Application | digium | asterisk | 11.5.1 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 1.8.15 | Yes |
| Application | digium | certified_asterisk | 11.2.0 | Yes |
| Application | digium | certified_asterisk | 11.2.0 | Yes |
| Application | digium | certified_asterisk | 11.2.0 | Yes |
| Application | digium | certified_asterisk | 11.2.0 | Yes |