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Asterisk Host-Based Authentication Security Bypass Vulnerability

Asterisk is prone to a security-bypass vulnerability that affects the SIP and IAX protocols.

An attacker can exploit this issue to bypass the host-based authentication mechanism. Successfully exploiting this issue will allow an attacker to impersonate any user. This may lead to false sense of security.

This issue affects versions prior to:

Asterisk Open Source 1.2.26
Asterisk Open Source 1.4.16
Asterisk Business Edition B.2.3.6
Asterisk Business Edition C.1.0-beta8