This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.
A telephony application running on the remote host is affected by a
denial of service vulnerability.
According to its SIP banner, the version of Asterisk running on the
remote host is either 13.x prior to 13.8.1 or 13.1-cert prior to
13.1-cert5. It is, therefore, affected by a flaw when processing
incoming REGISTER requests if the REGISTER contains an overlong URI
in the Contact header. An authenticated, remote attacker can exploit
this to cause a denial of service condition.
Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.
See also :
Upgrade to Asterisk version 13.8.1 / 13.1-cert5, or apply the
appropriate patch according to the Asterisk advisory.
Risk factor :
Medium / CVSS Base Score : 6.8
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