FreeBSD : FreeBSD -- Missing error handling in bhyve(8) device models (a6d5d4c1-0564-11ec-b69d-4062311215d5)

high Nessus Plugin ID 152859

Language:

Synopsis

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

Description

Certain VirtIO-based device models failed to handle errors when fetching I/O descriptors. Such errors could be triggered by a malicious guest. As a result, the device model code could be tricked into operating on uninitialized I/O vectors, leading to memory corruption. Impact : A malicious guest may be able to crash the bhyve process. It may be possible to exploit the memory corruption bugs to achieve arbitrary code execution in the bhyve process.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 152859

File Name: freebsd_pkg_a6d5d4c1056411ecb69d4062311215d5.nasl

Version: 1.4

Type: local

Family: FreeBSD Local Security Checks

Published: 8/26/2021

Updated: 12/1/2023

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-29631

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/25/2021

Vulnerability Publication Date: 8/24/2021

Reference Information

CVE: CVE-2021-29631

FreeBSD: SA-21:13.bhyve

Detections

Analytics