FreeBSD : qemu -- denial of service vulnerability in MSI-X support (3fb06284-b1b7-11e5-9728-002590263bf5)

Low Nessus Plugin ID 87690

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 4.4

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Prasad J Pandit, Red Hat Product Security Team, reports :

Qemu emulator built with the PCI MSI-X support is vulnerable to null pointer dereference issue. It occurs when the controller attempts to write to the pending bit array(PBA) memory region. Because the MSI-X MMIO support did not define the .write method.

A privileges used inside guest could use this flaw to crash the Qemu process resulting in DoS issue.

Solution

Update the affected packages.

See Also

https://www.openwall.com/lists/oss-security/2015/12/14/2

http://www.nessus.org/u?001a4abd

http://www.nessus.org/u?0d588cf1

http://www.nessus.org/u?f6b5160e

Plugin Details

Severity: Low

ID: 87690

File Name: freebsd_pkg_3fb06284b1b711e59728002590263bf5.nasl

Version: 2.8

Type: local

Published: 2016/01/04

Updated: 2021/01/04

Dependencies: 12634

Risk Information

Risk Factor: Low

VPR Score: 4.4

CVSS v2.0

Base Score: 2.1

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

CVSS v3.0

Base Score: 6

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:qemu, p-cpe:/a:freebsd:freebsd:qemu-devel, p-cpe:/a:freebsd:freebsd:qemu-sbruno, p-cpe:/a:freebsd:freebsd:qemu-user-static, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2016/01/03

Vulnerability Publication Date: 2015/06/26

Reference Information

CVE: CVE-2015-7549