CVE-2021-21985

critical

Description

The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. 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.

References

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

http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2021-0010.html

http://packetstormsecurity.com/files/163487/VMware-vCenter-Server-Virtual-SAN-Health-Check-Remote-Code-Execution.html

Details

Source: MITRE

Published: 2021-05-26

Updated: 2021-09-14

Type: CWE-20

Risk Information

CVSS v2

Base Score: 10

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

Impact Score: 10

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL