This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.
The remote host is affected by a man-in-the-middle spoofing
The remote host is running a version of FortiOS prior to 4.3.13. It
is, therefore, affected by a man-in-the-middle spoofing vulnerability
due to a flaw in the SSL-VPN feature. The SSL-VPN feature only
validates the first byte of the TLS MAC in finished messages. A
remote, man-in-the-middle attacker can exploit this, via a crafted
MAC field, to spoof encrypted content, potentially resulting in the
disclosure of sensitive information.
See also :
Upgrade to Fortinet FortiOS 4.3.14 or later.
Note that version 4.3.13 contained the earliest fix; however, that
version contained an unrelated error and was removed from
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.1
Public Exploit Available : true