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FreeBSD : xen-tools -- Unrestricted qemu logging (e800cd4b-4212-11e6-942d-bc5ff45d0f28)

medium Nessus Plugin ID 91940

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Synopsis

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

Description

The Xen Project reports :

When the libxl toolstack launches qemu for HVM guests, it pipes the output of stderr to a file in /var/log/xen. This output is not rate-limited in any way. The guest can easily cause qemu to print messages to stderr, causing this file to become arbitrarily large.

The disk containing the logfile can be exhausted, possibly causing a denial-of-service (DoS).

Solution

Update the affected package.

See Also

http://xenbits.xen.org/xsa/advisory-180.html

http://www.nessus.org/u?0fc83dd2

Plugin Details

Severity: Medium

ID: 91940

File Name: freebsd_pkg_e800cd4b421211e6942dbc5ff45d0f28.nasl

Version: 2.5

Type: local

Published: 7/5/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

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

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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: 7/4/2016

Vulnerability Publication Date: 5/23/2016

Reference Information

CVE: CVE-2014-3672