This script is Copyright (C) 2015 Tenable Network Security, Inc.
The remote FreeBSD host is missing a security-related update.
The Xen Project reports :
When decoding a guest write to a specific register in the virtual
interrupt controller Xen would treat an invalid value as a critical
error and crash the host.
By writing an invalid value to the GICD.SGIR register a guest can
crash the host, resulting in a Denial of Service attack.
See also :
Update the affected package.
Risk factor :
Medium / CVSS Base Score : 4.9