The default configuration of the SIP channel driver in Asterisk Open Source 1.4.x through 1.4.41.2 and 1.6.2.x through 1.6.2.18.2 does not enable the alwaysauthreject option, which allows remote attackers to enumerate account names by making a series of invalid SIP requests and observing the differences in the responses for different usernames, a different vulnerability than CVE-2011-2536.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Primary | 2.0 | 5.0 | MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| CWE ID | Type | Source |
|---|---|---|
| CWE-16 | Primary | nvd@nist.gov |
| Hyperlink | Source | Resource |
|---|---|---|
| http://downloads.asterisk.org/pub/security/AST-2011-011.html | cve@mitre.org | Vendor Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/68472 | cve@mitre.org | N/A |
| http://downloads.asterisk.org/pub/security/AST-2011-011.html | af854a3a-2127-422b-91ae-364da2661108 | Vendor Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/68472 | af854a3a-2127-422b-91ae-364da2661108 | N/A |