CVE-2021-21972: VMware vCenter Server 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).

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)99.9% · higher than 100% of CVEs

Exploited in the wildYes

CISA KEVListed Nov 3, 2021

Federal remediation dueNov 17, 2021

Ransomware campaign useKnown

Affected products

Which versions

VS

vCenter Server · VMware

7.x before 7.0 U1c; 6.7 before 6.7 U3l; 6.5 before 6.5 U3n · source: vendor, NVD, KEV

VC

VMware Cloud Foundation ·

4.x before 4.2; 3.x before 3.10.1.2 · source: vendor

CF

Cloud Foundation · Vmware

3.0 before 3.10.1.2; 4.0 before 4.2 · source: NVD