VMware vCenter Server RCE (direct check)

critical Nessus Plugin ID 146825
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote VMware vCenter Server host is missing a security patch and is affected by a remote code execution vulnerability.

Description

The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

Solution

Apply the appropriate patch as referenced in the vendor advisory.

See Also

https://kb.vmware.com/s/article/82374

https://swarm.ptsecurity.com/unauth-rce-vmware/

Plugin Details

Severity: Critical

ID: 146825

File Name: vmware_vcenter_cve-2021-21972.nbin

Version: 1.11

Type: remote

Family: Misc.

Published: 2/25/2021

Updated: 11/30/2021

Dependencies: vmware_vcenter_detect.nbin

Risk Information

CVSS Score Source: CVE-2021-21972

VPR

Risk Factor: Critical

Score: 9.8

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

Vulnerability Information

CPE: cpe:/a:vmware:vcenter_server

Required KB Items: Host/VMware/vCenter

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/23/2021

Vulnerability Publication Date: 2/23/2021

Exploitable With

Metasploit (VMware vCenter Server Unauthenticated OVA File Upload RCE)

Reference Information

CVE: CVE-2021-21972

IAVA: 2021-A-0109