VMware Horizon Log4Shell Direct Check (CVE-2021-44228) (VMSA-2021-0028)

critical Nessus Plugin ID 156560

Synopsis

A virtual desktop infrastructure application installed on the remote host is affected by a remote code execution vulnerability.

Description

A remote code execution vulnerability exists in VMware Horizon in the bundled Apache Log4j logging library. Apache Log4j is vulnerable due to insufficient protections on message lookup substitutions when dealing with user controlled input. A remote, unauthenticated attacker can explolit this, via a web request, to execute arbitrary code with the permission level of the running Java process.

This plugin requires that both the scanner and target machine have internet access.

Solution

Upgrade to a patched version of VMware Horizon if available or apply the workaround mentioned in the advisory.

See Also

https://www.vmware.com/security/advisories/VMSA-2021-0028.html

https://kb.vmware.com/s/article/87073

Plugin Details

Severity: Critical

ID: 156560

File Name: vmware_horizon_log4shell.nbin

Version: 1.20

Type: remote

Family: Misc.

Published: 1/7/2022

Updated: 8/31/2022

Risk Information

VPR

Risk Factor: Critical

Score: 10

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS Score Source: CVE-2021-44228

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9.5

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:vmware:horizon

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/16/2021

Vulnerability Publication Date: 12/9/2021

CISA Known Exploited Dates: 12/24/2021

Exploitable With

CANVAS (CANVAS)

Reference Information

CVE: CVE-2021-44228

IAVA: 2021-A-0573, 0001-A-0650, 2022-A-0060