main/acl.c in Asterisk Open Source 1.6.0.x before 1.6.0.25, 1.6.1.x before 1.6.1.17, and 1.6.2.x before 1.6.2.5 does not properly enforce remote host access controls when CIDR notation "/0" is used in permit= and deny= configuration rules, which causes an improper arithmetic shift and might allow remote attackers to bypass ACL rules and access services from unauthorized hosts.
2010-04-01T21:30:00.420
2025-04-11T00:51:21.963
Deferred
CVSSv2: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | digium | asterisk | 1.6.0 | Yes |
| Application | digium | asterisk | 1.6.0.1 | Yes |
| Application | digium | asterisk | 1.6.0.2 | Yes |
| Application | digium | asterisk | 1.6.0.3 | Yes |
| Application | digium | asterisk | 1.6.0.5 | Yes |
| Application | digium | asterisk | 1.6.0.6 | Yes |
| Application | digium | asterisk | 1.6.0.7 | Yes |
| Application | digium | asterisk | 1.6.0.8 | Yes |
| Application | digium | asterisk | 1.6.0.9 | Yes |
| Application | digium | asterisk | 1.6.0.10 | Yes |
| Application | digium | asterisk | 1.6.0.12 | Yes |
| Application | digium | asterisk | 1.6.0.13 | Yes |
| Application | digium | asterisk | 1.6.0.14 | Yes |
| Application | digium | asterisk | 1.6.0.15 | Yes |
| Application | digium | asterisk | 1.6.0.16 | Yes |
| Application | digium | asterisk | 1.6.0.16 | Yes |
| Application | digium | asterisk | 1.6.0.17 | Yes |
| Application | digium | asterisk | 1.6.0.18 | Yes |
| Application | digium | asterisk | 1.6.0.18 | Yes |
| Application | digium | asterisk | 1.6.0.18 | Yes |
| Application | digium | asterisk | 1.6.0.18 | Yes |
| Application | digium | asterisk | 1.6.0.19 | Yes |
| Application | digium | asterisk | 1.6.0.20 | Yes |
| Application | digium | asterisk | 1.6.0.21 | Yes |
| Application | digium | asterisk | 1.6.0.21 | Yes |
| Application | digium | asterisk | 1.6.0.22 | Yes |
| Application | digium | asterisk | 1.6.0.23 | Yes |
| Application | digium | asterisk | 1.6.0.24 | Yes |
| Application | digium | asterisk | 1.6.1 | Yes |
| Application | digium | asterisk | 1.6.1.1 | Yes |
| Application | digium | asterisk | 1.6.1.2 | Yes |
| Application | digium | asterisk | 1.6.1.4 | Yes |
| Application | digium | asterisk | 1.6.1.5 | Yes |
| Application | digium | asterisk | 1.6.1.6 | Yes |
| Application | digium | asterisk | 1.6.1.7 | Yes |
| Application | digium | asterisk | 1.6.1.7 | Yes |
| Application | digium | asterisk | 1.6.1.8 | Yes |
| Application | digium | asterisk | 1.6.1.9 | Yes |
| Application | digium | asterisk | 1.6.1.10 | Yes |
| Application | digium | asterisk | 1.6.1.10 | Yes |
| Application | digium | asterisk | 1.6.1.10 | Yes |
| Application | digium | asterisk | 1.6.1.10 | Yes |
| Application | digium | asterisk | 1.6.1.11 | Yes |
| Application | digium | asterisk | 1.6.1.12 | Yes |
| Application | digium | asterisk | 1.6.1.12 | Yes |
| Application | digium | asterisk | 1.6.1.13 | Yes |
| Application | digium | asterisk | 1.6.1.13 | Yes |
| Application | digium | asterisk | 1.6.1.14 | Yes |
| Application | digium | asterisk | 1.6.1.15 | Yes |
| Application | digium | asterisk | 1.6.1.16 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.0 | Yes |
| Application | digium | asterisk | 1.6.2.1 | Yes |
| Application | digium | asterisk | 1.6.2.1 | Yes |
| Application | digium | asterisk | 1.6.2.2 | Yes |
| Application | digium | asterisk | 1.6.2.3 | Yes |
| Application | digium | asterisk | 1.6.2.4 | Yes |