Detections
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VMware vCenter Server Virtual SAN Health Check plug-in RCE (CVE-2021-21985) (direct check)

critical Nessus Plugin ID 150163

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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 U2b, 6.7 before 6.7 U3n, and 6.5 before 6.5 U3p) and VMware Cloud Foundation (4.x before 4.2.1 and 3.x before 3.10.2.1).

Solution

Apply the appropriate patch as referenced in the vendor advisory.

See Also

https://www.vmware.com/security/advisories/VMSA-2021-0010.html

https://github.com/alt3kx/CVE-2021-21985_PoC

Plugin Details

Severity: Critical

ID: 150163

File Name: vmware_vcenter_cve-2021-21985.nbin

Version: 1.37

Type: remote

Family: Misc.

Published: 6/3/2021

Updated: 7/17/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2021-21985

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: CVSS:3.0/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: 5/25/2021

Vulnerability Publication Date: 5/25/2021

CISA Known Exploited Vulnerability Due Dates: 11/17/2021

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (VMware vCenter Server Virtual SAN Health Check Plugin RCE)

Reference Information

CVE: CVE-2021-21985

IAVA: 2021-A-0254