CVE intelligence and bounded remediation

CVE-2023-0456 — A flaw was found in APICast, when 3Scale's OIDC module does not properly evaluate the response to a mismatched token from a separate realm

High CVSS 7.5

A flaw was found in APICast, when 3Scale's OIDC module does not properly evaluate the response to a mismatched token from a separate realm. This could allow a separate realm to be accessible to an attacker, permitting access to unauthorized information.

Severity
High
CVSS
7.5 (3.1)
Published
2023-09-27
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-285, CWE-862

Affected products

  • redhat / apicast

Showing 1 representative product identities from 2 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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

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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