The SIP channel driver in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; Asterisk Business Edition (BE) C.3.x before C.3.8.1; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones exhibits different behavior for invalid INVITE, SUBSCRIBE, and REGISTER transactions depending on whether the user account exists, which allows remote attackers to enumerate account names by (1) reading HTTP status codes, (2) reading additional text in a 403 (aka Forbidden) response, or (3) observing whether certain retransmissions occur.
2013-04-01T16:55:03.747
2025-04-11T00:51:21.963
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.0 | Yes |
| Application | asterisk | open_source | 1.8.1 | Yes |
| Application | asterisk | open_source | 1.8.1 | Yes |
| Application | asterisk | open_source | 1.8.1.1 | Yes |
| Application | asterisk | open_source | 1.8.1.2 | Yes |
| Application | asterisk | open_source | 1.8.2 | Yes |
| Application | asterisk | open_source | 1.8.2 | Yes |
| Application | asterisk | open_source | 1.8.2.1 | Yes |
| Application | asterisk | open_source | 1.8.2.2 | Yes |
| Application | asterisk | open_source | 1.8.2.3 | Yes |
| Application | asterisk | open_source | 1.8.2.4 | Yes |
| Application | asterisk | open_source | 1.8.3 | Yes |
| Application | asterisk | open_source | 1.8.3 | Yes |
| Application | asterisk | open_source | 1.8.3 | Yes |
| Application | asterisk | open_source | 1.8.3 | Yes |
| Application | asterisk | open_source | 1.8.3.1 | Yes |
| Application | asterisk | open_source | 1.8.3.2 | Yes |
| Application | asterisk | open_source | 1.8.3.3 | Yes |
| Application | asterisk | open_source | 1.8.4 | Yes |
| Application | asterisk | open_source | 1.8.4 | Yes |
| Application | asterisk | open_source | 1.8.4 | Yes |
| Application | asterisk | open_source | 1.8.4 | Yes |
| Application | asterisk | open_source | 1.8.4.1 | Yes |
| Application | asterisk | open_source | 1.8.4.2 | Yes |
| Application | asterisk | open_source | 1.8.4.3 | Yes |
| Application | asterisk | open_source | 1.8.4.4 | Yes |
| Application | asterisk | open_source | 1.8.5 | Yes |
| Application | asterisk | open_source | 1.8.5.0 | Yes |
| Application | asterisk | open_source | 1.8.6.0 | Yes |
| Application | asterisk | open_source | 1.8.6.0 | Yes |
| Application | asterisk | open_source | 1.8.6.0 | Yes |
| Application | asterisk | open_source | 1.8.6.0 | Yes |
| Application | asterisk | open_source | 1.8.7.0 | Yes |
| Application | asterisk | open_source | 1.8.7.0 | Yes |
| Application | asterisk | open_source | 1.8.7.0 | Yes |
| Application | asterisk | open_source | 1.8.7.1 | Yes |
| Application | asterisk | open_source | 1.8.7.2 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.0 | Yes |
| Application | asterisk | open_source | 1.8.8.1 | Yes |
| Application | asterisk | open_source | 1.8.8.2 | Yes |
| Application | asterisk | open_source | 1.8.9.0 | Yes |
| Application | asterisk | open_source | 1.8.9.0 | Yes |
| Application | asterisk | open_source | 1.8.9.0 | Yes |
| Application | asterisk | open_source | 1.8.9.0 | Yes |
| Application | asterisk | open_source | 1.8.9.1 | Yes |
| Application | asterisk | open_source | 1.8.9.2 | Yes |
| Application | asterisk | open_source | 1.8.9.3 | Yes |
| Application | asterisk | open_source | 1.8.10.0 | Yes |
| Application | asterisk | open_source | 1.8.10.0 | Yes |
| Application | asterisk | open_source | 1.8.10.0 | Yes |
| Application | asterisk | open_source | 1.8.10.0 | Yes |
| Application | asterisk | open_source | 1.8.10.0 | Yes |
| Application | asterisk | open_source | 1.8.10.1 | Yes |
| Application | asterisk | open_source | 1.8.11.0 | Yes |
| Application | asterisk | open_source | 1.8.11.0 | Yes |
| Application | asterisk | open_source | 1.8.11.0 | Yes |
| Application | asterisk | open_source | 1.8.11.1 | Yes |
| Application | asterisk | open_source | 1.8.12 | Yes |
| Application | asterisk | open_source | 1.8.12.0 | Yes |
| Application | asterisk | open_source | 1.8.12.0 | Yes |
| Application | asterisk | open_source | 1.8.12.0 | Yes |
| Application | asterisk | open_source | 1.8.12.1 | Yes |
| Application | asterisk | open_source | 1.8.12.2 | Yes |
| Application | asterisk | open_source | 1.8.13.0 | Yes |
| Application | asterisk | open_source | 1.8.13.0 | Yes |
| Application | asterisk | open_source | 1.8.13.0 | Yes |
| Application | asterisk | open_source | 1.8.13.1 | Yes |
| Application | asterisk | open_source | 1.8.14.0 | Yes |
| Application | asterisk | open_source | 1.8.14.0 | Yes |
| Application | asterisk | open_source | 1.8.14.0 | Yes |
| Application | asterisk | open_source | 1.8.14.1 | Yes |
| Application | asterisk | open_source | 1.8.15.0 | Yes |
| Application | asterisk | open_source | 1.8.15.0 | Yes |
| Application | asterisk | open_source | 1.8.15.1 | Yes |
| Application | asterisk | open_source | 1.8.16.0 | Yes |
| Application | asterisk | open_source | 1.8.16.0 | Yes |
| Application | asterisk | open_source | 1.8.16.0 | Yes |
| Application | asterisk | open_source | 1.8.17.0 | Yes |
| Application | asterisk | open_source | 1.8.17.0 | Yes |
| Application | asterisk | open_source | 1.8.17.0 | Yes |
| Application | asterisk | open_source | 1.8.17.0 | Yes |
| Application | asterisk | open_source | 1.8.18.0 | Yes |
| Application | asterisk | open_source | 1.8.18.0 | Yes |
| Application | asterisk | open_source | 1.8.18.1 | Yes |
| Application | asterisk | open_source | 1.8.19.0 | Yes |
| Application | asterisk | open_source | 1.8.19.0 | Yes |
| Application | asterisk | open_source | 1.8.19.0 | Yes |
| Application | asterisk | open_source | 1.8.19.1 | Yes |
| Application | asterisk | open_source | 1.8.20.0 | Yes |
| Application | asterisk | open_source | 1.8.20.0 | Yes |
| Application | asterisk | open_source | 1.8.20.0 | Yes |
| Application | asterisk | open_source | 1.8.20.1 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.0 | Yes |
| Application | asterisk | open_source | 10.0.1 | Yes |
| Application | asterisk | open_source | 10.1.0 | Yes |
| Application | asterisk | open_source | 10.1.0 | Yes |
| Application | asterisk | open_source | 10.1.0 | Yes |
| Application | asterisk | open_source | 10.1.1 | Yes |
| Application | asterisk | open_source | 10.1.2 | Yes |
| Application | asterisk | open_source | 10.1.3 | Yes |
| Application | asterisk | open_source | 10.2.0 | Yes |
| Application | asterisk | open_source | 10.2.0 | Yes |
| Application | asterisk | open_source | 10.2.0 | Yes |
| Application | asterisk | open_source | 10.2.0 | Yes |
| Application | asterisk | open_source | 10.2.0 | Yes |
| Application | asterisk | open_source | 10.2.1 | Yes |
| Application | asterisk | open_source | 10.3.0 | Yes |
| Application | asterisk | open_source | 10.3.0 | Yes |
| Application | asterisk | open_source | 10.3.0 | Yes |
| Application | asterisk | open_source | 10.3.1 | Yes |
| Application | asterisk | open_source | 10.4.0 | Yes |
| Application | asterisk | open_source | 10.4.0 | Yes |
| Application | asterisk | open_source | 10.4.0 | Yes |
| Application | asterisk | open_source | 10.4.0 | Yes |
| Application | asterisk | open_source | 10.4.1 | Yes |
| Application | asterisk | open_source | 10.4.2 | Yes |
| Application | asterisk | open_source | 10.5.0 | Yes |
| Application | asterisk | open_source | 10.5.0 | Yes |
| Application | asterisk | open_source | 10.5.0 | Yes |
| Application | asterisk | open_source | 10.5.1 | Yes |
| Application | asterisk | open_source | 10.5.2 | Yes |
| Application | asterisk | open_source | 10.6.0 | Yes |
| Application | asterisk | open_source | 10.6.0 | Yes |
| Application | asterisk | open_source | 10.6.0 | Yes |
| Application | asterisk | open_source | 10.6.1 | Yes |
| Application | asterisk | open_source | 10.7.0 | Yes |
| Application | asterisk | open_source | 10.7.0 | Yes |
| Application | asterisk | open_source | 10.7.1 | Yes |
| Application | asterisk | open_source | 10.8.0 | Yes |
| Application | asterisk | open_source | 10.8.0 | Yes |
| Application | asterisk | open_source | 10.8.0 | Yes |
| Application | asterisk | open_source | 10.9.0 | Yes |
| Application | asterisk | open_source | 10.9.0 | Yes |
| Application | asterisk | open_source | 10.9.0 | Yes |
| Application | asterisk | open_source | 10.9.0 | Yes |
| Application | asterisk | open_source | 10.10.0 | Yes |
| Application | asterisk | open_source | 10.10.0 | Yes |
| Application | asterisk | open_source | 10.10.0 | Yes |
| Application | asterisk | open_source | 10.10.1 | Yes |
| Application | asterisk | open_source | 10.11.0 | Yes |
| Application | asterisk | open_source | 10.11.0 | Yes |
| Application | asterisk | open_source | 10.11.0 | Yes |
| Application | asterisk | open_source | 10.11.1 | Yes |
| Application | asterisk | open_source | 10.12.0 | Yes |
| Application | asterisk | open_source | 10.12.0 | Yes |
| Application | asterisk | open_source | 10.12.0 | Yes |
| Application | asterisk | open_source | 10.12.1 | Yes |
| Application | asterisk | open_source | 11.0.0 | Yes |
| Application | asterisk | open_source | 11.0.0 | Yes |
| Application | asterisk | open_source | 11.0.0 | Yes |
| Application | asterisk | open_source | 11.0.0 | Yes |
| Application | asterisk | open_source | 11.0.0 | Yes |
| Application | asterisk | open_source | 11.0.1 | Yes |
| Application | asterisk | open_source | 11.0.2 | Yes |
| Application | asterisk | open_source | 11.1.0 | Yes |
| Application | asterisk | open_source | 11.1.0 | Yes |
| Application | asterisk | open_source | 11.1.0 | Yes |
| Application | asterisk | open_source | 11.1.1 | Yes |
| Application | asterisk | open_source | 11.1.2 | Yes |
| Application | asterisk | open_source | 11.2.0 | Yes |
| Application | asterisk | open_source | 11.2.0 | Yes |
| Application | asterisk | open_source | 11.2.0 | Yes |
| Application | asterisk | open_source | 11.2.1 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15.0 | Yes |
| Application | asterisk | certified_asterisk | 1.8.15.0 | Yes |
| Application | asterisk | business_edition | c.3.2.2 | Yes |
| Application | asterisk | business_edition | c.3.3 | Yes |
| Application | asterisk | business_edition | c.3.3.2 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.0.0 | Yes |
| Application | asterisk | digiumphones | 10.1.0 | Yes |
| Application | asterisk | digiumphones | 10.1.0 | Yes |
| Application | asterisk | digiumphones | 10.1.0 | Yes |
| Application | asterisk | digiumphones | 10.2.0 | Yes |
| Application | asterisk | digiumphones | 10.2.0 | Yes |
| Application | asterisk | digiumphones | 10.2.0 | Yes |
| Application | asterisk | digiumphones | 10.2.0 | Yes |
| Application | asterisk | digiumphones | 10.2.0 | Yes |
| Application | asterisk | digiumphones | 10.3.0 | Yes |
| Application | asterisk | digiumphones | 10.3.0 | Yes |
| Application | asterisk | digiumphones | 10.3.0 | Yes |
| Application | asterisk | digiumphones | 10.4.0 | Yes |
| Application | asterisk | digiumphones | 10.4.0 | Yes |
| Application | asterisk | digiumphones | 10.4.0 | Yes |
| Application | asterisk | digiumphones | 10.4.0 | Yes |
| Application | asterisk | digiumphones | 10.5.0 | Yes |
| Application | asterisk | digiumphones | 10.5.0 | Yes |
| Application | asterisk | digiumphones | 10.5.0 | Yes |
| Application | asterisk | digiumphones | 10.6.0 | Yes |
| Application | asterisk | digiumphones | 10.6.0 | Yes |
| Application | asterisk | digiumphones | 10.6.0 | Yes |
| Application | asterisk | digiumphones | 10.7.0 | Yes |
| Application | asterisk | digiumphones | 10.7.0 | Yes |
| Application | asterisk | digiumphones | 10.8.0 | Yes |
| Application | asterisk | digiumphones | 10.8.0 | Yes |
| Application | asterisk | digiumphones | 10.8.0 | Yes |
| Application | asterisk | digiumphones | 10.9.0 | Yes |
| Application | asterisk | digiumphones | 10.10.0 | Yes |
| Application | asterisk | digiumphones | 10.10.0 | Yes |
| Application | asterisk | digiumphones | 10.10.0 | Yes |
| Application | asterisk | digiumphones | 10.11.0 | Yes |
| Application | asterisk | digiumphones | 10.11.0 | Yes |
| Application | asterisk | digiumphones | 10.11.0 | Yes |
| Application | asterisk | digiumphones | 10.11.0 | Yes |
| Application | asterisk | digiumphones | 10.12.0 | Yes |
| Application | asterisk | digiumphones | 10.12.0 | Yes |
| Application | asterisk | digiumphones | 10.12.0 | Yes |
| Application | asterisk | digiumphones | 10.12.1 | Yes |