CVE-2021-21972

critical

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).

From the Tenable Blog

CVE-2021-21972: VMware vCenter Server Remote Code Execution Vulnerability
CVE-2021-21972: VMware vCenter Server Remote Code Execution Vulnerability

Published: 2021-02-25

Proof-of-concept exploit scripts for a critical remote code execution flaw, along with mass scanning activity, indicate that organizations should apply vCenter Server patches immediately. Update May 26: The Proof of concept section has been updated to reflect the publication of a proof-of-concept (PoC) for CVE-2021-21974.

References

https://thehackernews.com/2024/09/hacktivist-group-twelve-targets-russian.html

https://securelist.com/twelve-group-unified-kill-chain/113877/

https://www.crowdstrike.com/blog/anatomy-of-alpha-spider-ransomware/

https://www.tenable.com/blog/aa22-257a-cybersecurity-joint-advisory-on-iranian-islamic-revolutionary-guard-ransomware

https://www.tenable.com/cyber-exposure/a-look-inside-the-ransomware-ecosystem

https://www.cisa.gov/news-events/cybersecurity-advisories/aa22-117a

https://www.tenable.com/blog/cve-2022-22948-vmware-vcenter-server-sensitive-information-disclosure-vulnerability

https://www.tenable.com/blog/contileaks-chats-reveal-over-30-vulnerabilities-used-by-conti-ransomware-affiliates

https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective

https://www.fortiguard.com/threat-signal-report/4295

https://www.tenable.com/blog/cve-2021-21972-vmware-vcenter-server-remote-code-execution-vulnerability

https://www.vmware.com/security/advisories/VMSA-2021-0002.html

http://packetstormsecurity.com/files/163268/VMware-vCenter-6.5-6.7-7.0-Remote-Code-Execution.html

http://packetstormsecurity.com/files/161695/VMware-vCenter-Server-File-Upload-Remote-Code-Execution.html

http://packetstormsecurity.com/files/161590/VMware-vCenter-Server-7.0-Arbitrary-File-Upload.html

Details

Source: Mitre, NVD

Published: 2021-02-24

Updated: 2024-02-13

Risk Information

CVSS v2

Base Score: 10

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

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical