This script is Copyright (C) 2013-2016 Tenable Network Security, Inc.
A telephony application running on the remote host is affected by an
information disclosure vulnerability.
According to the version in its SIP banner, the version of Asterisk
running on the remote host is potentially affected by a username
disclosure vulnerability related to INVITE, SUBSCRIBE and REGISTER
transactions and improper settings for the configuration options
'alwaysauthreject', 'allowguest' and 'autocreatepeer'.
See also :
Upgrade to Asterisk 220.127.116.11 / 10.12.2 / 11.2.2 / Certified Asterisk
1.8.15-cert2 / Asterisk Business Edition C.3.8.1, or apply the
appropriate patch listed in the Asterisk advisory.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 3.7
Public Exploit Available : false