FreeBSD : xen-tools -- virtio: unbounded memory allocation issue (06574c62-5854-11e6-b334-002590263bf5)

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


Synopsis :

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

Description :

The Xen Project reports :

A guest can submit virtio requests without bothering to wait for
completion and is therefore not bound by virtqueue size...

A malicious guest administrator can cause unbounded memory allocation
in QEMU, which can cause an Out-of-Memory condition in the domain
running qemu. Thus, a malicious guest administrator can cause a denial
of service affecting the whole host.

See also :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211482
http://xenbits.xen.org/xsa/advisory-184.html
http://www.nessus.org/u?4e201f7c

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: 92676 ()

Bugtraq ID:

CVE ID: CVE-2016-5403

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