SSRF in Vmware Cloud_foundation

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 plugin. A malicious actor with network access to port 443 may exploit this issue by sending a PO…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.880 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

  • Vmware Cloud_foundation
  • Vmware Vcenter_server — versions 6.5, 6.7, 7.0
  • N/a Vmware Cloud Foundation — versions 4.x before 4.2, 3.x before 3.10.1.2
  • N/a Vmware Vcenter Server — versions 7.x before 7.0 U1c, 6.7 before 6.7 U3l, 6.5 before 6.5 U3n

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-21973?
CVE-2021-21973 is a medium-severity vulnerability in Vmware Cloud_foundation, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2021-02-24.
How severe is CVE-2021-21973?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-21973 known to be exploited?
Yes. CVE-2021-21973 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07), indicating it is being actively exploited. 38 public proof-of-concept repositories are indexed.