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GHSA-gv8p-48fr-4fxgmedium6.5

Shopware: Privilege Escalation via Sync API Integration Admin Flag Bypass

Impact

A non-admin API user with integration:create ACL privilege can escalate to full administrator by creating an integration with admin: true through the Sync API (POST /api/_action/sync). The regular integration endpoint (POST /api/integration) correctly blocks this, but the Sync API bypasses the controller-level check by writing directly through the DAL EntityWriter. The integration entity definition lacks WriteProtection, and the admin field has no field-level restriction flag.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

shopware/platform Packagist
Affected rangeRecorded fix
From 6.7.0.0 before 6.7.10.1Ecosystem versions6.7.10.1
Earlier releases before 6.6.10.18Ecosystem versions6.6.10.18

Version evidence: OSV · GHSA-gv8p-48fr-4fxg

View original version evidence (192 explicit versions)
shopware/core Packagist
Affected rangeRecorded fix
From 6.7.0.0 before 6.7.10.1Ecosystem versions6.7.10.1
Earlier releases before 6.6.10.18Ecosystem versions6.6.10.18

Version evidence: OSV · GHSA-gv8p-48fr-4fxg

View original version evidence (192 explicit versions)

Original source description

Summary

A non-admin API user with integration:create ACL privilege can escalate to full administrator by creating an integration with admin: true through the Sync API (POST /api/_action/sync). The regular integration endpoint (POST /api/integration) correctly blocks this, but the Sync API bypasses the controller-level check by writing directly through the DAL EntityWriter. The integration entity definition lacks WriteProtection, and the admin field has no field-level restriction flag.

OWASP: A01:2021 — Broken Access Control

Root Cause

IntegrationController::upsertIntegration() checks $source->isAdmin() before allowing the admin field to be set. However, SyncController::sync() routes writes through SyncService → EntityWriter, which only applies:

  1. AclWriteValidator — checks entity-level ACL (integration:create is sufficient)
  2. EntityProtectionValidator — checks WriteProtection on entity definitions, but IntegrationDefinition has none

The admin field in IntegrationDefinition is a plain BoolField with no WriteProtection or special flag. The Sync API writes it without restriction.

Vulnerable code path:

  • src/Core/Framework/Api/Controller/SyncController.php → SyncService → EntityWriter::upsert()
  • Missing protection: src/Core/Framework/Integration/IntegrationDefinition.php — admin field has no WriteProtection(Context::SYSTEM_SCOPE)

Working protection (bypassed):

  • src/Core/Framework/Integration/IntegrationController.php:46-56 — isAdmin() check only applies to the dedicated controller endpoint

Impact

  • Complete admin API access — the escalated integration has full read/write on every entity: users, customers, orders, system configuration, integrations, plugins
  • PII exfiltration — read all customer records (names, emails, addresses, order history)
  • Persistent backdoor — the admin integration survives password changes and user deactivation

Remediation

Add WriteProtection(Context::SYSTEM_SCOPE) to IntegrationDefinition, matching how UserDefinition and AclRoleDefinition are already protected:

// src/Core/Framework/Integration/IntegrationDefinition.php
(new BoolField('admin', 'admin'))
    ->addFlags(new WriteProtection(Context::SYSTEM_SCOPE)),

References