Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer.
2008-06-04T19:32:00.000
2025-04-09T00:30:58.490
Deferred
CVSSv2: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | asterisk | asterisk_business_edition | ≤ b2.5.2 | Yes |
| Application | asterisk | asterisk_business_edition | b.1.3.2 | Yes |
| Application | asterisk | asterisk_business_edition | b.1.3.3 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.2.0 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.2.1 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.1 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.2 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.3 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.3.4 | Yes |
| Application | asterisk | asterisk_business_edition | b.2.5.0 | Yes |
| Application | asterisk | asterisk_business_edition | b2.5.1 | Yes |
| Application | asterisk | open_source | ≤ 1.2.28 | Yes |
| Application | asterisk | open_source | 1.0 | Yes |
| Application | asterisk | open_source | 1.0.0 | Yes |
| Application | asterisk | open_source | 1.0.1 | Yes |
| Application | asterisk | open_source | 1.0.2 | Yes |
| Application | asterisk | open_source | 1.0.3 | Yes |
| Application | asterisk | open_source | 1.0.4 | Yes |
| Application | asterisk | open_source | 1.0.5 | Yes |
| Application | asterisk | open_source | 1.0.6 | Yes |
| Application | asterisk | open_source | 1.0.7 | Yes |
| Application | asterisk | open_source | 1.0.8 | Yes |
| Application | asterisk | open_source | 1.0.9 | Yes |
| Application | asterisk | open_source | 1.0.11 | Yes |
| Application | asterisk | open_source | 1.0.11.1 | Yes |
| Application | asterisk | open_source | 1.0.12 | Yes |
| Application | asterisk | open_source | 1.2.0 | Yes |
| Application | asterisk | open_source | 1.2.0beta1 | Yes |
| Application | asterisk | open_source | 1.2.0beta2 | Yes |
| Application | asterisk | open_source | 1.2.1 | Yes |
| Application | asterisk | open_source | 1.2.2 | Yes |
| Application | asterisk | open_source | 1.2.10 | Yes |
| Application | asterisk | open_source | 1.2.11 | Yes |
| Application | asterisk | open_source | 1.2.12 | Yes |
| Application | asterisk | open_source | 1.2.12.1 | Yes |
| Application | asterisk | open_source | 1.2.13 | Yes |
| Application | asterisk | open_source | 1.2.14 | Yes |
| Application | asterisk | open_source | 1.2.15 | Yes |
| Application | asterisk | open_source | 1.2.16 | Yes |
| Application | asterisk | open_source | 1.2.17 | Yes |
| Application | asterisk | open_source | 1.2.18 | Yes |
| Application | asterisk | open_source | 1.2.19 | Yes |
| Application | asterisk | open_source | 1.2.20 | Yes |
| Application | asterisk | open_source | 1.2.21 | Yes |
| Application | asterisk | open_source | 1.2.21.1 | Yes |
| Application | asterisk | open_source | 1.2.22 | Yes |
| Application | asterisk | open_source | 1.2.23 | Yes |
| Application | asterisk | open_source | 1.2.24 | Yes |
| Application | asterisk | open_source | 1.2.25 | Yes |
| Application | asterisk | open_source | 1.2.26 | Yes |
| Application | asterisk | open_source | 1.2.26.1 | Yes |
| Application | asterisk | open_source | 1.2.26.2 | Yes |
| Application | asterisk | open_source | 1.2.27 | Yes |