CVE intelligence and bounded remediation

CVE-2021-21978 — VMware View Planner 4.x prior to 4.6 Security Patch 1 contains a remote code execution vulnerability

Critical CVSS 9.8

VMware View Planner 4.x prior to 4.6 Security Patch 1 contains a remote code execution vulnerability. Improper input validation and lack of authorization leading to arbitrary file upload in logupload web application. An unauthorized attacker with network access to View Planner Harness could upload and execute a specially crafted file leading to remote code execution within the logupload container.

Severity
Critical
CVSS
9.8 (3.1)
Published
2021-03-03
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-862

Affected products

  • vmware / view_planner
  • vmware / view_planner / 4.6

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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