Summary
SuiteCRM's V8 module API allows any authenticated OAuth2 user to perform CRUD operations on modules intended to be administrator-only. A low-privileged user may exploit this authorization gap to change roles and access-control settings, potentially gaining administrator-equivalent control over CRM data and behavior.
SuiteCRM's V8 module API allows any authenticated OAuth2 user to perform CRUD operations on modules intended to be administrator-only. A low-privileged user may exploit this authorization gap to change roles and access-control settings, potentially gaining administrator-equivalent control over CRM data and behavior.
Affected context
The issue occurs in the SuiteCRM V8 module API at /Api/V8/module, where operations involving ACLRoles, ACLActions, and Administration can affect roles, permissions, and global configuration. It is relevant when the API is reachable by authenticated users and authorization checks do not adequately restrict these sensitive operations to administrators.
The issue occurs in the SuiteCRM V8 module API at /Api/V8/module, where operations involving ACLRoles, ACLActions, and Administration can affect roles, permissions, and global configuration. It is relevant when the API is reachable by authenticated users and authorization checks do not adequately restrict these sensitive operations to administrators.
Exploit preconditions
- Attack surface: SuiteCRM V8 module API
- Required access: An authenticated OAuth2 account; the described issue affects low-privileged users
- Trigger point: CRUD operations involving administrator-only modules and security-sensitive ACL or administration data
- Why exploitation is possible: The API exposes privileged operations without sufficiently enforcing the caller's authorization level
- Attack surface: SuiteCRM V8 module API
- Required access: An authenticated OAuth2 account; the described issue affects low-privileged users
- Trigger point: CRUD operations involving administrator-only modules and security-sensitive ACL or administration data
- Why exploitation is possible: The API exposes privileged operations without sufficiently enforcing the caller's authorization level
Why this happens
The underlying issue is inadequate authorization enforcement for security-sensitive API operations. When the application permits a caller to create or modify roles, access-control levels, role bindings, or global configuration without verifying the required privilege for each operation, users can exercise authority beyond their intended role. This maps to CWE-269: Improper Privilege Management.
The underlying issue is inadequate authorization enforcement for security-sensitive API operations. When the application permits a caller to create or modify roles, access-control levels, role bindings, or global configuration without verifying the required privilege for each operation, users can exercise authority beyond their intended role. This maps to CWE-269: Improper Privilege Management.
Potential impact
- A low-privileged user could gain administrator-equivalent access
- CRM roles and access-control settings may be changed without authorization
- Sensitive CRM data could be exposed, altered, or deleted
- Global configuration and application behavior could be modified
- A low-privileged user could gain administrator-equivalent access
- CRM roles and access-control settings may be changed without authorization
- Sensitive CRM data could be exposed, altered, or deleted
- Global configuration and application behavior could be modified
General mitigation guidance
Defensive approaches generally focus on enforcing authorization at every sensitive operation and limiting the authority available to each account.
- Deny privileged operations by default and explicitly authorize each action against the caller's role and permissions.
- Apply consistent server-side checks to role, ACL, and administration changes, including indirect or related-object updates.
- Treat client-supplied role and authorization data as untrusted; derive effective permissions from trusted server-side state.
- Separate routine API capabilities from administrative capabilities and follow least-privilege principles.
- Validate authorization behavior with negative tests for low-privileged accounts and policy checks in the development pipeline.
Defensive approaches generally focus on enforcing authorization at every sensitive operation and limiting the authority available to each account.
- Deny privileged operations by default and explicitly authorize each action against the caller's role and permissions.
- Apply consistent server-side checks to role, ACL, and administration changes, including indirect or related-object updates.
- Treat client-supplied role and authorization data as untrusted; derive effective permissions from trusted server-side state.
- Separate routine API capabilities from administrative capabilities and follow least-privilege principles.
- Validate authorization behavior with negative tests for low-privileged accounts and policy checks in the development pipeline.
How teams detect issues like this
- Review API routes and CRUD handlers for missing or inconsistent authorization checks, especially those accessing ACLRoles, ACLActions, and Administration.
- Use static analysis or code review rules to flag sensitive data mutations that are not guarded by explicit permission checks.
- Test API policies with accounts of different privilege levels, verifying that unauthorized role, ACL, and configuration changes are denied.
- Monitor audit events for unexpected role creation, permission changes, role bindings, or global configuration updates.
- Enforce centralized authorization policies and require security review for changes to privileged API operations.
- Review API routes and CRUD handlers for missing or inconsistent authorization checks, especially those accessing ACLRoles, ACLActions, and Administration.
- Use static analysis or code review rules to flag sensitive data mutations that are not guarded by explicit permission checks.
- Test API policies with accounts of different privilege levels, verifying that unauthorized role, ACL, and configuration changes are denied.
- Monitor audit events for unexpected role creation, permission changes, role bindings, or global configuration updates.
- Enforce centralized authorization policies and require security review for changes to privileged API operations.
