This script is Copyright (C) 2016 Tenable Network Security, Inc.
The remote FreeBSD host is missing one or more security-related
When a segment with the SYN flag for an already existing connection
arrives, the TCP stack tears down the connection, bypassing a check
that the sequence number in the segment is in the expected window.
Impact : An attacker who has the ability to spoof IP traffic can tear
down a TCP connection by sending only 2 packets, if they know both TCP
port numbers. In case one of the two port numbers is unknown, a
successful attack requires less than 2**17 packets spoofed, which can
be generated within less than a second on a decent connection to the
See also :
Update the affected packages.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : true