This script is Copyright (C) 2008-2013 Tenable Network Security, Inc.
The remote VoIP service can be abused to conduct an amplification
attack against third-party hosts.
The version of Asterisk installed on the remote host does not properly
validate an IAX2 handshake. By spoofing NEW and ACK messages, an
unauthenticated, remote attacker may be able to leverage this issue to
flood a third-party host with packets from the affected host containing
See also :
Upgrade to Asterisk 1.4.20 / 1.2.28, Asterisk Business Edition C.1.8.1
/ B.2.5.2, AsteriskNOW 1.0.3, s800i (Asterisk Appliance) 220.127.116.11 or
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.1
Public Exploit Available : true