CVE intelligence and bounded remediation

CVE-2023-29051 — User-defined OXMF templates could be used to access a limited part of the internal OX App Suite Java API

High CVSS 8.1

User-defined OXMF templates could be used to access a limited part of the internal OX App Suite Java API. The existing switch to disable the feature by default was not effective in this case. Unauthorized users could discover and modify application state, including objects related to other users and contexts. We now make sure that the switch to disable user-generated templates by default works as intended and will remove the feature in future generations of the product. No publicly available exploits are known.

Severity
High
CVSS
8.1 (3.1)
Published
2024-01-08
CISA KEV
Not currently listed
Ecosystem
java/maven
Weaknesses
CWE-284

Affected products

  • open-xchange / ox_app_suite
  • open-xchange / ox_app_suite / 7.10.6

Showing 2 representative product identities from 41 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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