Horizon Alert
Summary of the vulnerability and why it matters
A critical vulnerability has been identified in the Restaurant Brands International assistant platform. This issue allows authenticated attackers to gain administrative control over the entire platform. The primary concern is to confirm if our organization uses this specific platform and assess any potential exposure.
- Authenticated users can gain full platform control.
- Assess relevance to our operations.
- Confirm platform use and exposure.
Attack Path
How an attacker could exploit the issue
An attacker with valid credentials can exploit this vulnerability by interacting with the platform's GraphQL interface. By using a specific mutation, they can trick the system into issuing an administrative token, which would grant them elevated privileges over the entire platform.
- Requires authenticated access.
- Triggered via GraphQL mutation.
- Risk of full platform compromise.
Live Threat
Current exploitation, exposure, and threat context
An authenticated attacker could gain administrative privileges for the entire Restaurant Brands International assistant platform. This could allow unauthorized control over platform functions, impacting service operations and potentially leading to data access or modification if such capabilities are supported by the platform's design.
- Platform administrative token.
- Via GraphQL mutation when authenticated.
- Unauthorized control over services.
Operational Fix
Recommended remediation, mitigation, and detection steps
The RBI assistant platform's GraphQL endpoint is likely managed by the platform or infrastructure teams, with input from application owners responsible for its functionality. Security teams should coordinate initial triage. The first practical step is to identify all instances of the affected platform, confirm its exposure and business criticality, and then determine the accountable owner to plan remediation.
- Platform team owns remediation efforts.
- Verify platform's network exposure and reachability.
- Plan coordinated updates with vendor.
