CVE-2024-45392

Executive Summary

CVE-2024-45392 is a high-severity vulnerability in SuiteCRM, an open-source Customer Relationship Management system. The flaw stems from insufficient access control checks in the API, allowing an authenticated attacker to delete records without proper authorization. This can lead to data integrity loss and potential denial of service. The vulnerability affects all versions prior to 7.14.5 and 8.6.2. No public proof-of-concept (PoC) or exploit code has been released at this time, and the EPSS score is 0.0%, indicating a low probability of exploitation in the wild currently. However, given the high CVSS score and the nature of the vulnerability, immediate patching is recommended.

Supply Chain & Package Security

SuiteCRM is a PHP-based application. The vulnerability is in the core application code, not in a third-party package. However, organizations using SuiteCRM should verify the integrity of their installation and ensure no unauthorized modifications have been made.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
• Base Score: 7.7 (High)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: Low (PR:L) - An attacker needs a valid user account.
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: None (C:N)
• Integrity Impact: Low (I:L) - The attacker can delete records, affecting data integrity.
• Availability Impact: High (A:H) - Deleting critical records can lead to service disruption.

Threat Level: High. While no public exploit exists, the low attack complexity and network vector make it attractive for targeted attacks.

Deep Dive & Mechanics

The vulnerability is located in the SuiteCRM API endpoints responsible for record deletion. The application fails to properly validate whether the authenticated user has the necessary permissions (e.g., delete access) for the specific record type or module. This allows a user with minimal privileges to send a crafted API request to delete records they should not have access to.

The core issue is a missing or insufficient access control check (CWE-862: Missing Authorization). The API likely checks for authentication but does not enforce granular permissions on the delete action. An attacker can enumerate record IDs and delete them via the API.

Vulnerable vs. Patched Code

The vulnerable code likely resides in the API controller or service layer handling delete requests. The patch introduces a permission check before executing the delete operation.

Vulnerable Code (Conceptual):

// In API endpoint for deleting a record
public function deleteRecord($recordId) {
    // Missing permission check
    $record = $this->recordRepository->find($recordId);
    if ($record) {
        $this->recordRepository->delete($record);
        return $this->successResponse();
    }
    return $this->errorResponse('Record not found');
}

Patched Code (Conceptual):

public function deleteRecord($recordId) {
    // Added permission check
    if (!$this->authorizationService->canDelete($this->getCurrentUser(), $recordId)) {
        return $this->errorResponse('Forbidden', 403);
    }
    $record = $this->recordRepository->find($recordId);
    if ($record) {
        $this->recordRepository->delete($record);
        return $this->successResponse();
    }
    return $this->errorResponse('Record not found');
}

Exploitation & Lab Setup

Red Team

Prerequisites:

• A valid SuiteCRM user account with minimal privileges (e.g., a standard user).
• Network access to the SuiteCRM instance.
• Knowledge of the API endpoint structure (e.g., /api/v8/modules/{module_name}/{record_id}).

Exploitation Steps:

1. Authenticate to SuiteCRM and obtain a session token or API key.
2. Identify a target record ID (e.g., via enumeration or from a previous interaction).
3. Send a DELETE request to the API endpoint:

   DELETE /api/v8/modules/Accounts/123 HTTP/1.1
   Host: target-suitecrm.com
   Authorization: Bearer <token>
   

4. If successful, the record will be deleted without proper authorization.

Note: No public exploit code is available. The above is a conceptual demonstration.

Blue Team

Detection:

• Monitor API logs for DELETE requests from users who should not have delete permissions.
• Look for patterns of rapid record deletion across different modules.
• Alert on 403 Forbidden responses followed by repeated attempts.

Hunting:

• Search for API requests to /api/v8/modules/* with the DELETE method from low-privilege users.
• Correlate with user role changes or privilege escalation attempts.

Indicators of Compromise (IOCs)

• Network IOCs:
  • Unusual DELETE requests to SuiteCRM API endpoints from non-admin users.
  • High volume of 403 errors followed by successful deletions.
• Host IOCs:
  • SuiteCRM access logs showing DELETE requests for records outside the user's scope.
  • Database audit logs showing unexpected record deletions.
• File IOCs:
  • Modified SuiteCRM core files (e.g., API controllers) if an attacker attempts to patch the vulnerability themselves.

Detection Engineering

YARA Rule

rule Detect_SuiteCRM_Delete_Exploit {
    meta:
        description = "Detects potential exploitation of CVE-2024-45392 in SuiteCRM API logs"
        author = "Valters IT"
        date = "2024-01-01"
        reference = "CVE-2024-45392"
    strings:
        $api_delete = "DELETE /api/v8/modules/" ascii wide nocase
        $http_200 = "HTTP/1.1 200 OK" ascii wide nocase
        $http_403 = "HTTP/1.1 403 Forbidden" ascii wide nocase
    condition:
        $api_delete and (#http_200 > 0 or #http_403 > 0)
}

Sigma Rule

title: SuiteCRM Unauthorized Record Deletion via API
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects attempts to delete records via SuiteCRM API without proper authorization (CVE-2024-45392)
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access_log
detection:
    selection:
        cs-method: 'DELETE'
        cs-uri-stem|startswith: '/api/v8/modules/'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate admin actions
level: high

Suricata Rule

alert http any any -> any any (msg:"SuiteCRM Unauthorized Record Deletion Attempt (CVE-2024-45392)"; flow:to_server; http.method; content:"DELETE"; http.uri; content:"/api/v8/modules/"; startswith; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Patch: Upgrade SuiteCRM to version 7.14.5 or 8.6.2 immediately.
2. Workaround: If patching is not possible, restrict API access to trusted IPs and enforce strict role-based access controls (RBAC) at the network level (e.g., via a WAF or reverse proxy).
3. Audit: Review access logs for any signs of exploitation. Check for deleted records and restore from backups if necessary.

Long-term Measures:

• Implement regular security audits of API endpoints.
• Enforce the principle of least privilege for all user roles.
• Enable detailed logging for all API actions.
• Subscribe to SuiteCRM security advisories.

Valters IT Signature

This report was generated by Valters IT DevSecOps AI. For questions, contact security@valters-it.com.