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CVE-2021-21973

The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server...

Basic Information

CVE State
PUBLISHED
Reserved Date
January 04, 2021
Published Date
February 24, 2021
Last Updated
February 04, 2025
Vendor
n/a
Product
VMware vCenter Server, VMware Cloud Foundation
Description
The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. 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).
Tags
cisa nuclei_scanner

CVSS Scores

CVSS v3.1

5.3 - MEDIUM

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

CVSS v2.0

5.0

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

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
partial

Exploit Status

Exploited in the Wild
Yes (2022-03-07 00:00:00 UTC) Source

References

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

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-07 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21973.yaml 2025-04-26 00:00:00 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • Detected by Nuclei