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MB-R081 — Cloud/SaaS integrations restricted by ACL

C12 Third‑party Config Security Medium

Accounts used for SaaS connectors must follow least privilege. Assign scoped API roles, restrict IP ranges, and separate production from sandbox tenants. Over‑permissioned API users amplify blast radius when credentials leak, enabling destructive actions beyond the integration’s intended purpose.

Why it Matters

Magento stores often connect to Cloud or SaaS services such as CRMs, ERPs, email marketing, or analytics tools. If these integrations are not protected by Access Control Lists (ACLs), any attacker who discovers the endpoint may be able to abuse it, extract data, or trigger unauthorized actions.

Restricting Cloud/SaaS integrations by ACL ensures that only authorized roles, IP ranges, or API clients can use these connections. This limits the blast radius if credentials are leaked or if extensions expose insecure endpoints.

Verification Steps

Magento ACL check

# Inspect etc/acl.xml in extensions
app/code/Vendor/Module/etc/acl.xml

# Ensure integration endpoints are mapped to secure roles
# Example: only "Admin" or specific integration roles allowed

Cloud/SaaS provider config

# Verify integration uses:
# - API keys restricted to specific IPs
# - OAuth tokens scoped with least privilege
# - ACL rules in Magento admin (System > Permissions > User Roles)

Remediation / Fix Guidance

  1. Review all Cloud/SaaS integrations (CRM, ERP, marketing, shipping, etc.).
  2. Ensure each integration:
    • Is mapped to a Magento role with least privilege via acl.xml.
    • Uses API keys or tokens restricted by IP allow-list or VPC peering when available.
    • Has role-based access control (RBAC) applied in both Magento and the SaaS provider.
  3. Rotate credentials regularly and disable unused integrations.
  4. Audit access logs for suspicious activity coming from integration endpoints.

Examples

Fail Example
# etc/acl.xml
<resource id="Vendor_Module::integration" title="Integration" />
# No role restrictions — all admins and extensions can access → FAIL
Pass Example
# etc/acl.xml
<resource id="Vendor_Module::integration" title="Integration" parent="Magento_Backend::admin">
    <resource id="Vendor_Module::restricted_integration" title="Restricted Cloud Integration"/>
</resource>

# Integration mapped only to "Integration Role"
# API key restricted by IP allow-list at SaaS provider → PASS

References