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

medium Nessus Plugin ID 87690
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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: Medium

ID: 87690

File Name: freebsd_pkg_3fb06284b1b711e59728002590263bf5.nasl

Version: 2.8

Type: local

Published: 1/4/2016

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

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

CVSS v3

Risk Factor: Medium

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: 1/3/2016

Vulnerability Publication Date: 6/26/2015

Reference Information

CVE: CVE-2015-7549