FreeBSD : xen-kernel -- CPU lockup during exception delivery (2cabfbab-8bfb-11e5-bd18-002590263bf5)

This script is Copyright (C) 2015 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

The Xen Project reports :

A malicious HVM guest administrator can cause a denial of service.
Specifically, prevent use of a physical CPU for a significant, perhaps
indefinite period. If a host watchdog (Xen or dom0) is in use, this
can lead to a watchdog timeout and consequently a reboot of the host.
If another, innocent, guest, is configured with a watchdog, this issue
can lead to a reboot of such a guest.

See also :

http://xenbits.xen.org/xsa/advisory-156.html
http://www.nessus.org/u?22d9abb9

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 86877 ()

Bugtraq ID:

CVE ID: CVE-2015-5307
CVE-2015-8104

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