This script is Copyright (C) 2011-2014 Tenable Network Security, Inc.
It may be possible to predict TCP/IP Initial Sequence Numbers for the
The Linux kernel is prone to a security weakness related to TCP
sequence number generation. Attackers can exploit this issue to inject
arbitrary packets into TCP sessions using a brute-force attack.
An attacker may use this vulnerability to create a denial of service
condition or a man-in-the-middle attack.
Note that this plugin may fire as a result of a network device (such
as a load balancer, VPN, IPS, transparent proxy, etc.) that is
vulnerable and that re-writes TCP sequence numbers, rather than the
host itself being vulnerable.
See also :
Contact the OS vendor for a Linux kernel update / patch.
Risk factor :
Medium / CVSS Base Score : 6.8
CVSS Temporal Score : 5.9
Public Exploit Available : true