This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.
The remote FreeBSD host is missing a security-related update.
The Xen Project reports :
Certain PV guest kernel operations (page table writes in particular)
need emulation, and use Xen's general x86 instruction emulator. This
allows a malicious guest kernel which asynchronously modifies its
instruction stream to effect the clearing of EFLAGS.IF from the state
used to return to guest context.
A malicious guest kernel administrator can cause a host hang or crash,
resulting in a Denial of Service.
See also :
Update the affected package.
Risk factor :
Medium / CVSS Base Score : 4.9