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FreeBSD : xen-tools -- Unsanitised guest input in libxl device handling code (e2fca11b-4212-11e6-942d-bc5ff45d0f28)

medium Nessus Plugin ID 91935

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Synopsis

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

Description

The Xen Project reports :

Various parts of libxl device-handling code inappropriately use information from (partially) guest controlled areas of xenstore.

A malicious guest administrator can cause denial of service by resource exhaustion.

A malicious guest administrator can confuse and/or deny service to management facilities.

A malicious guest administrator of a guest configured with channel devices may be able to escalate their privilege to that of the backend domain (i.e., normally, to that of the host).

Solution

Update the affected package.

See Also

http://xenbits.xen.org/xsa/advisory-175.html

http://www.nessus.org/u?1d76257d

Plugin Details

Severity: Medium

ID: 91935

File Name: freebsd_pkg_e2fca11b421211e6942dbc5ff45d0f28.nasl

Version: 2.4

Type: local

Published: 7/5/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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: 6/2/2016

Reference Information

CVE: CVE-2016-4962