FreeBSD : FreeBSD -- bhyve(8) virtual machine escape (e722e3c6-bbee-11e6-b1cf-14dae9d210b8)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

The bounds checking of accesses to guest memory greater than 4GB by
device emulations is subject to integer overflow. Impact : For a bhyve
virtual machine with more than 3GB of guest memory configured, a
malicious guest could craft device descriptors that could give it
access to the heap of the bhyve process. Since the bhyve process is
running as root, this may allow guests to obtain full control of the
hosts they're running on.

See also :

http://www.nessus.org/u?4e1e245d

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 95588 ()

Bugtraq ID:

CVE ID: CVE-2016-1889

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