CVE intelligence and bounded remediation

CVE-2021-21983 — Vmware Cloud Foundation security vulnerability

High CVSS 8.5

Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authenticated malicious actor with network access to the vRealize Operations Manager API can write files to arbitrary locations on the underlying photon operating system.

Severity
High
CVSS
8.5 (2.0)
Published
2021-03-31
CISA KEV
Not currently listed
Ecosystem
software/application

Affected products

  • vmware / cloud_foundation / 3.0
  • vmware / cloud_foundation / 3.0.1
  • vmware / cloud_foundation / 3.0.1.1
  • vmware / cloud_foundation / 3.5
  • vmware / cloud_foundation / 3.5.1
  • vmware / cloud_foundation / 3.7

Showing 6 representative product identities from 27 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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