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

medium Nessus Plugin ID 92676

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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.

Solution

Update the affected package.

Plugin Details

Severity: Medium

ID: 92676

File Name: freebsd_pkg_06574c62585411e6b334002590263bf5.nasl

Version: 2.5

Type: local

Family: FreeBSD Local Security Checks

Published: 8/2/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:xen-tools, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 8/2/2016

Vulnerability Publication Date: 7/27/2016

Reference Information

CVE: CVE-2016-5403

Detections

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