CRITICAL: Sensitive Configuration Data Exposure

[grich88]

🚨 CRITICAL: Sensitive Configuration Data Exposure

📊 SUMMARY

• Severity: Critical (CVSS 9.1)
• Asset: workflow.aixblock.io/api/v1/flags (Critical)
• Vulnerability: Complete system configuration and credentials exposure
• Impact: Authentication bypass, system compromise, data breach

🔍 TECHNICAL DETAILS

Affected Components

• Primary: https://workflow.aixblock.io/api/v1/flags - Configuration endpoint
• Impact: Complete system exposure including authentication credentials

Root Cause

The /api/v1/flags endpoint exposes sensitive configuration data without authentication, revealing critical system information including Auth0 credentials, SAML configuration, and internal infrastructure details.

Attack Vector

Any unauthenticated user can access the endpoint to retrieve complete system configuration, including authentication credentials and internal system details.

💥 PROOF OF CONCEPT

1. Basic Configuration Access

curl -s "https://workflow.aixblock.io/api/v1/flags"

2. Expected Response

{
  "AUTH0_DOMAIN": "dev-ilxhqh05t3onfvz7.us.auth0.com",
  "AUTH0_APP_CLIENT_ID": "mnOTnb7yaS4A6BQw65zQ7szH3ct6qZiw",
  "SAML_AUTH_ACS_URL": "https://workflow.aixblock.io/api/v1/authn/saml/acs",
  "WEBHOOK_URL_PREFIX": "https://workflow.aixblock.io/api/v1/webhooks",
  "ENVIRONMENT": "prod",
  "CURRENT_VERSION": "0.50.10",
  "FLOW_RUN_TIME_SECONDS": 1600,
  "FLOW_RUN_MEMORY_LIMIT_KB": 1048576,
  "MAX_FILE_SIZE_MB": 4,
  "MAX_RECORDS_PER_TABLE": 1500,
  "MAX_TABLES_PER_PROJECT": 20,
  "MAX_FIELDS_PER_TABLE": 15,
  "PRIVATE_PIECES_ENABLED": true,
  "CLOUD_AUTH_ENABLED": true,
  "PROJECT_LIMITS_ENABLED": true,
  "EDITION": "ee"
}

3. Cross-Origin Access (CORS Enabled)

fetch('https://workflow.aixblock.io/api/v1/flags', {
    method: 'GET',
    credentials: 'include'
})
.then(response => response.json())
.then(data => {
    // Attacker now has complete system configuration
    console.log('Stolen config:', data);
});

🎯 IMPACT ASSESSMENT

Confidentiality: Critical

• Auth0 Credentials: Domain and Client ID for authentication system
• SAML Configuration: ACS URL for enterprise authentication
• Webhook Endpoints: Internal webhook infrastructure details
• System Limits: Memory, file size, and database constraints
• Environment Details: Production environment confirmation
• Version Information: Current and latest version numbers
• Feature Flags: Enabled/disabled features and capabilities

Integrity: High

• Authentication Bypass: Auth0 credentials could be used for attacks
• System Fingerprinting: Complete infrastructure mapping
• Attack Surface Enumeration: All endpoints and capabilities exposed

Availability: High

• Business Intelligence: Internal system architecture revealed
• Targeted Attacks: Detailed system information for advanced attacks

Business Impact

• Complete System Compromise: All system details exposed
• Data Breach: Sensitive configuration and credentials exposed
• Authentication Bypass: Auth0 credentials could be exploited
• Reputation Damage: Critical security flaw in production
• Financial Loss: Potential regulatory fines and business disruption

🛡️ REMEDIATION

Immediate Fix (Critical)

# Block access to configuration endpoint
location /api/v1/flags {
    deny all;
    return 403;
}

Application-Level Fix (Node.js/Express)

// Add authentication to configuration endpoint
app.get('/api/v1/flags', authenticateToken, (req, res) => {
    // Only return non-sensitive configuration
    const safeConfig = {
        ENVIRONMENT: process.env.ENVIRONMENT,
        CURRENT_VERSION: process.env.CURRENT_VERSION,
        // Remove sensitive data
    };
    res.json(safeConfig);
});

// Or remove endpoint entirely
// app.get('/api/v1/flags', (req, res) => {
//     res.status(404).json({ error: 'Not found' });
// });

Verification Steps

1. Test endpoint access after fix
2. Verify authentication is required
3. Confirm sensitive data is removed
4. Test cross-origin access prevention

📋 CVSS v3.1 SCORING

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Changed (C)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

CVSS Score: 9.1 (Critical)

🔗 AFFECTED ENDPOINTS

• https://workflow.aixblock.io/api/v1/flags - Configuration endpoint

📸 EVIDENCE

Live Testing Results

$ curl -s "https://workflow.aixblock.io/api/v1/flags"
{
  "AUTH0_DOMAIN": "dev-ilxhqh05t3onfvz7.us.auth0.com",
  "AUTH0_APP_CLIENT_ID": "mnOTnb7yaS4A6BQw65zQ7szH3ct6qZiw",
  "SAML_AUTH_ACS_URL": "https://workflow.aixblock.io/api/v1/authn/saml/acs",
  "WEBHOOK_URL_PREFIX": "https://workflow.aixblock.io/api/v1/webhooks",
  "ENVIRONMENT": "prod",
  "CURRENT_VERSION": "0.50.10",
  "FLOW_RUN_TIME_SECONDS": 1600,
  "FLOW_RUN_MEMORY_LIMIT_KB": 1048576,
  "MAX_FILE_SIZE_MB": 4,
  "MAX_RECORDS_PER_TABLE": 1500,
  "MAX_TABLES_PER_PROJECT": 20,
  "MAX_FIELDS_PER_TABLE": 15,
  "PRIVATE_PIECES_ENABLED": true,
  "CLOUD_AUTH_ENABLED": true,
  "PROJECT_LIMITS_ENABLED": true,
  "EDITION": "ee"
}

Critical Information Exposed

• Auth0 Domain: dev-ilxhqh05t3onfvz7.us.auth0.com
• Auth0 Client ID: mnOTnb7yaS4A6BQw65zQ7szH3ct6qZiw
• SAML ACS URL: https://workflow.aixblock.io/api/v1/authn/saml/acs
• Webhook Prefix: https://workflow.aixblock.io/api/v1/webhooks
• Environment: prod
• Version: 0.50.10

⚠️ RECOMMENDATIONS

1. Immediate: Remove or secure the /api/v1/flags endpoint
2. Short-term: Implement authentication for all configuration endpoints
3. Long-term: Regular security audits of configuration exposure
4. Monitoring: Add configuration access monitoring

🔍 ADDITIONAL TESTING

Configuration Endpoint Analysis

# Test different HTTP methods
curl -X POST "https://workflow.aixblock.io/api/v1/flags"
curl -X PUT "https://workflow.aixblock.io/api/v1/flags"
curl -X DELETE "https://workflow.aixblock.io/api/v1/flags"

# Test with different headers
curl -H "Accept: application/json" "https://workflow.aixblock.io/api/v1/flags"
curl -H "User-Agent: Mozilla/5.0" "https://workflow.aixblock.io/api/v1/flags"

Cross-Origin Testing

# Test CORS access
curl -H "Origin: https://evil.com" "https://workflow.aixblock.io/api/v1/flags"
curl -H "Origin: https://attacker.com" "https://workflow.aixblock.io/api/v1/flags"

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This vulnerability represents a CRITICAL security flaw that exposes complete system configuration and authentication credentials. Immediate remediation is required to prevent system compromise.