Asterisk Open Source 1.2.x before 1.2.26 and 1.4.x before 1.4.16, and
Business Edition B.x.x before B.2.3.6 and C.x.x before C.1.0-beta8,
when using database-based registrations ("realtime") and host-based
authentication, does not check the IP address when the username is
correct and there is no password, which allows remote attackers to
bypass authentication using a valid username.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
BUGTRAQ:20071218 AST-2007-027 - Database matching order permits host-based authentication to be ignored
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the CVE-ID was allocated or reserved, and does not
necessarily indicate when this vulnerability was
discovered, shared with the affected vendor, publicly
disclosed, or updated in CVE.
This is an entry on the CVE
list, which standardizes names for security