CVE-2024-39324

Executive Summary

CVE-2024-39324 is an improper access control vulnerability in the Aimeos GraphQL API admin interface (ai-admin-graphql). The flaw allows authenticated users with the editor role to manage their own services via the GraphQL API, a privilege that is explicitly denied in the JQAdm front end. This violates the principle of least privilege and can lead to unauthorized service modifications, potentially impacting the integrity of the e-commerce platform.

The vulnerability affects all versions from 2022.04.1 up to (but not including) 2022.10.10, 2023.10.6, and 2024.4.2. The CVSS score is 3.8 (Low), reflecting the low attack complexity but limited impact. No public proof-of-concept or exploit code is available at this time.

Supply Chain & Package Security

This vulnerability is in the ai-admin-graphql package, which is a Composer package for PHP. Organizations using Aimeos should verify their dependency version and update to the patched releases. The package is distributed via Packagist and GitHub. No known malicious packages or typosquatting attempts have been reported in connection with this CVE.

CVSS Breakdown & Threat Level

• CVSS Score: 3.8 (Low)
• Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
• Attack Vector (AV): Network (N) – The vulnerability is exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions are required.
• Privileges Required (PR): Low (L) – An attacker needs a valid editor account.
• User Interaction (UI): None (N) – No user action is needed.
• Scope (S): Unchanged (U) – The vulnerable component is the only affected component.
• Confidentiality (C): Low (L) – Limited information disclosure possible.
• Integrity (I): None (N) – No data modification.
• Availability (A): None (N) – No denial of service.

Threat Level: Low. The vulnerability requires authentication and only allows editors to manage their own services, which is a minor privilege escalation. However, in multi-tenant or high-security environments, this could be leveraged for further attacks.

Deep Dive & Mechanics

The Aimeos admin interface uses two separate front ends: the JQAdm (JavaScript/HTML) and the GraphQL API. The JQAdm front end correctly restricts editor users from managing services (e.g., shipping, payment). However, the GraphQL API endpoint (/admin/graphql) does not enforce the same access control checks for the editor role.

The root cause is a missing or insufficient authorization check in the GraphQL resolver for service-related mutations/queries. When an editor sends a GraphQL request to create, update, or delete a service, the backend fails to verify that the user has the required admin role. This allows the editor to perform actions that should be reserved for administrators.

The vulnerability is in the ai-admin-graphql package, specifically in the service management resolvers. The patch adds a role check before processing service-related GraphQL operations.

Vulnerable vs. Patched Code

Vulnerable Code (Conceptual):

// In a GraphQL resolver for service management
public function saveService($input, $context) {
    // No role check performed
    $serviceManager = \Aimeos\MShop::create($context, 'service');
    $item = $serviceManager->save($input);
    return $item;
}

Patched Code (Conceptual):

// In a GraphQL resolver for service management
public function saveService($input, $context) {
    // Added role check
    if (!$context->getUser()->hasRole('admin')) {
        throw new \Aimeos\MW\Exception('Access denied');
    }
    $serviceManager = \Aimeos\MShop::create($context, 'service');
    $item = $serviceManager->save($input);
    return $item;
}

The patch adds a check for the admin role before allowing service management operations. This ensures that only users with the admin role can manage services via the GraphQL API.

Exploitation & Lab Setup

Red Team

Prerequisites:

• A valid editor account on an Aimeos instance running a vulnerable version.
• Network access to the GraphQL API endpoint (typically /admin/graphql).

Exploitation Steps:

1. Authenticate as an editor user and obtain a session token or API key.
2. Send a GraphQL mutation to create a new service. Example:

   mutation {
     saveService(input: {
       code: "malicious-shipping",
       label: "Malicious Shipping",
       type: "shipping",
       status: 1,
       config: {
         "provider": "CustomProvider"
       }
     }) {
       id
       code
     }
   }
   

3. If successful, the service will be created, allowing the editor to modify shipping/payment options.

Lab Setup:

• Use Docker to deploy a vulnerable Aimeos instance:

  docker run -d -p 8080:80 aimeos/aimeos:2022.04.1
  

• Access the admin panel and create an editor user.
• Use a GraphQL client (e.g., Postman, Insomnia) to send the mutation.

Blue Team

Detection:

• Monitor GraphQL API logs for unexpected saveService, deleteService, or getService mutations from non-admin users.
• Alert on any service creation/modification by users with the editor role.

Hunting:

• Search for GraphQL queries containing saveService or deleteService where the user role is not admin.
• Review audit logs for service changes and correlate with user roles.

Mitigation:

• Immediately upgrade to patched versions.
• If patching is not possible, implement a WAF rule to block GraphQL mutations targeting service management from non-admin users.

Indicators of Compromise (IOCs)

• Network:
  • GraphQL requests to /admin/graphql containing saveService, deleteService, or getService mutations from users with the editor role.
• Logs:
  • Audit log entries showing service creation/modification by users with role editor.
• System:
  • Unexpected services (shipping, payment) in the Aimeos admin panel created by non-admin users.

Detection Engineering

YARA Rule

rule CVE_2024_39324_Aimeos_GraphQL_Service_Access {
    meta:
        description = "Detects GraphQL requests attempting to exploit CVE-2024-39324"
        author = "Valters IT"
        date = "2025-04-07"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2024-39324"
    strings:
        $graphql_mutation = /mutation\s*\{[^}]*saveService/i
        $graphql_query = /query\s*\{[^}]*getService/i
        $graphql_delete = /mutation\s*\{[^}]*deleteService/i
    condition:
        any of them
}

Sigma Rule

title: CVE-2024-39324 - Aimeos GraphQL Service Management by Editor
id: 8a3f7c2e-5d1b-4a9f-8c6e-2b7d3f1a0e4c
status: experimental
description: Detects GraphQL API requests from editor users attempting to manage services
author: Valters IT
date: 2025-04-07
logsource:
    category: application
    product: aimeos
detection:
    selection:
        user_role: "editor"
        graphql_operation: 
            - "saveService"
            - "deleteService"
            - "getService"
    condition: selection
falsepositives:
    - Legitimate admin users performing service management
level: medium

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"CVE-2024-39324 - Aimeos GraphQL Service Management by Editor";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"/admin/graphql"; http_uri;
    content:"saveService"; http_client_body;
    pcre:"/editor/i";
    sid:1000001;
    rev:1;
    reference:cve,2024-39324;
    classtype:attempted-user;
    priority:2;
)

Remediation & Mitigation

Immediate Actions:

1. Upgrade to versions 2022.10.10, 2023.10.6, or 2024.4.2.
2. If upgrade is not possible, disable the GraphQL API for non-admin users temporarily.
3. Review all existing services for unauthorized modifications.

Long-Term Measures:

• Implement role-based access control (RBAC) checks in all API endpoints.
• Conduct regular security audits of GraphQL resolvers.
• Use API gateways to enforce access control policies.
• Enable detailed logging for all GraphQL operations.

Workarounds:

• Use a Web Application Firewall (WAF) to block GraphQL mutations targeting service management from users with the editor role.
• Modify the ai-admin-graphql source code to add role checks (if custom deployment).

Valters IT
Securing Digital Frontiers