MCP Security & Access Control Analysis

What Can Someone Do With Your MCP Link?

✅ Current Capabilities (Read-Only)

Anyone with access to your MCP server can:

1. test_connection() - Verify Oracle connectivity

   • Learn your Oracle database exists
   • Learn your Oracle version
   • Learn your database host/port
   • Learn the connected user (APPS)

2. run_procurement_agent() - Run agent with any parameters

   ⚠️ CRITICAL: Can run against ANY organization_id
   ⚠️ CRITICAL: Can run ANY workflow
   ⚠️ CRITICAL: Can request ANY limit (50, 1000, 10000 records)
   ⚠️ CRITICAL: Can access data they shouldn't have access to
   

3. list_organization_ids() - See all available organizations

   📊 Data Exposure: Full list of 196 org IDs
   📊 Business Intelligence: Reveals company structure
   📊 Sensitive: Could expose secret/testing organizations
   

4. list_saved_reports() - See all generated reports

   📁 File Access: See all previous analysis results
   📁 Data Exposure: Learn what analyses have been run
   📁 Sensitive: Could contain proprietary business decisions
   

5. read_output_file(filename) - Read ANY report file

   🔓 DATA BREACH: Can read all JSON and Excel reports
   🔓 SENSITIVE DATA: PO information, supplier analysis, pricing
   🔓 BUSINESS INTELLIGENCE: Historical decisions and trends
   

6. get_latest_report_paths() - Find newest reports

   📍 Metadata: Reveals what's being analyzed currently
   

🚨 Security Problems That Will Occur

1. UNAUTHORIZED DATA ACCESS

What they can access:

• ✗ All procurement exceptions (past due POs, inventory issues)
• ✗ All supplier performance data
• ✗ All pricing analysis and anomalies
• ✗ Demand forecasts
• ✗ Safety stock calculations
• ✗ Spend analytics by supplier
• ✗ Organization structure (all 196 orgs)

Impact:

• Competitors could learn supplier information
• Internal users could access data outside their org
• Unauthorized spend visibility across company

2. UNAUTHORIZED ANALYSIS EXECUTION

What they can do:

# Run exception-triage on ALL organizations
run_procurement_agent(
    workflow="exception-triage",
    organization_id=7088,  # They choose any org
    limit=10000  # They request all records
)

# Run again for different org
run_procurement_agent(
    workflow="exception-triage",
    organization_id=204,  # Different org
    limit=10000
)

# Run different workflows to learn business
run_procurement_agent(workflow="late-supplier")    # Supplier data
run_procurement_agent(workflow="price-anomaly")    # Pricing data
run_procurement_agent(workflow="spend-analytics")  # Spend patterns

Impact:

• No audit trail of who ran what
• No rate limiting
• No approval required
• Could extract all procurement data

3. DATABASE CREDENTIAL EXPOSURE

What gets revealed:

Connection Details:
- Database Host: 161.118.185.249
- Database Port: 1521
- Database SID: EBSDB
- Connected User: APPS (Oracle procurement user)
- Oracle Version: 19.0.0.0.0

Impact:

• Attacker knows exact Oracle instance location
• Could attempt direct database connection
• Could attempt credential stuffing/brute force
• Knows which version (could exploit version-specific vulnerabilities)

4. BUSINESS INTELLIGENCE LEAKAGE

From organization list:

Organizations exposed:
- 204 (V1) - Main
- 3537 (CH) - Unknown entity
- 3646 (UTG) - Unknown entity
- 5357 (PFS) - Unknown entity
- 7088 (IN4) - Unknown entity

Total: 196 organizations mapped

From reports:

Can infer:
- How many supplier issues exist
- Which items have problems
- Pricing strategy
- Supplier consolidation plans
- Safety stock policies
- Demand patterns

5. NO AUTHENTICATION/AUTHORIZATION

Current State:

• ✗ No user authentication
• ✗ No role-based access control
• ✗ No organization-level filtering
• ✗ No data masking
• ✗ No audit logging
• ✗ Anyone with MCP link = full access

📊 Real-World Attack Scenarios

Scenario 1: Insider Threat

Employee with MCP link:
1. Runs exception-triage for all 196 orgs
2. Extracts supplier information
3. Sells to competitor
4. Leaves with full supplier database

Scenario 2: Competitor Espionage

Competitor gets MCP link:
1. Lists all organizations
2. Runs spend-analytics workflow
3. Extracts pricing by supplier
4. Learns procurement strategy
5. Undercuts in contract negotiations

Scenario 3: Disgruntled Employee

User about to be fired:
1. Extracts all 196 org reports
2. Downloads all supplier/pricing data
3. Reads all decision logs
4. Takes business intelligence
5. Reports with competitor

Scenario 4: Supply Chain Attack

Attacker gains MCP link:
1. Analyzes supplier relationships
2. Identifies key suppliers
3. Targets supplier with phishing
4. Compromises supply chain

🔴 Risks Summary

Risk	Severity	Impact
Unauthorized data access	CRITICAL	All procurement data exposed
No authentication	CRITICAL	Anyone can access
No authorization	CRITICAL	No org-level controls
Database credentials exposed	HIGH	Database location known
Business intelligence leak	HIGH	Strategic info revealed
No audit trail	HIGH	Can't track who did what
No rate limiting	MEDIUM	Can extract all data
No data masking	MEDIUM	Sensitive details visible

✅ What Should Be Done

Immediate Actions (CRITICAL)

1. DO NOT SHARE MCP LINK

   • Currently no security controls
   • Anyone with link = full access
   • Should only be used by trusted developers

2. Implement Authentication

   # Add API key authentication
   @mcp.tool()
   def run_procurement_agent(...):
       api_key = get_auth_header()
       if not validate_api_key(api_key):
           return _err("Unauthorized")
   

3. Implement Authorization

   # Restrict by user's organization
   if user_org_id not in allowed_orgs(user):
       return _err("Access denied to this organization")
   

4. Add Audit Logging

   log_access(
       user_id=current_user,
       tool="run_procurement_agent",
       org_id=organization_id,
       timestamp=now()
   )
   

Short-Term Improvements (HIGH)

1. Role-Based Access Control (RBAC)

   roles:
     viewer:
       - list_organization_ids: false
       - run_procurement_agent: false
       - read_output_file: false
     analyst:
       - list_organization_ids: true
       - run_procurement_agent: true  # Own org only
       - read_output_file: true
     admin:
       - all_tools: true
   

2. Organization-Level Filtering

   # Only see reports for your organization
   user_org = get_user_org(user_id)
   if organization_id != user_org:
       return _err("Cannot access other organizations")
   

3. Rate Limiting

   # Max 5 requests per hour per user
   if exceeds_rate_limit(user_id, "run_procurement_agent"):
       return _err("Rate limit exceeded")
   

4. Data Masking

   # Mask sensitive supplier names
   supplier_name = "3G Communications" → "SUPPLIER-001"
   supplier_id = 783 → HIDDEN
   

Long-Term Solutions (MEDIUM)

1. OAuth 2.0 / SAML Authentication

   • Integrate with company SSO
   • Role mappings from directory
   • Better user tracking

2. Fine-Grained Access Control

   • Workflow-level permissions
   • Field-level masking
   • Time-based access (business hours only)

3. Data Governance

   • PII detection and redaction
   • Data classification
   • Retention policies
   • Compliance reporting (SOX, GDPR, etc.)

4. Advanced Audit

   • All tool calls logged
   • Data access tracking
   • Suspicious activity alerts
   • Monthly audit reports

📋 Sharing Checklist

BEFORE sharing MCP link, you MUST:

• Implement authentication (API key minimum)
• Implement organization-level authorization
• Add rate limiting
• Add audit logging
• Document who has access and why
• Get security approval
• Get business owner approval
• Create access revocation process
• Set expiration dates for access
• Establish data handling policies

🎯 Recommended Approach

Current State: DO NOT SHARE

❌ No authentication
❌ No authorization
❌ No audit logging
❌ No rate limiting
⚠️ SECURITY RISK: CRITICAL

Safe to Share With (MAX):

• Developers on your team
• Your direct manager
• Your IT security team
• Production operations team

NOT Safe to Share With:

• ❌ Anyone outside your company
• ❌ Other departments (unless authenticated)
• ❌ Contractors/consultants
• ❌ Partner companies
• ❌ Anyone you don't trust

🔐 Quick Security Wins

Option 1: Network Isolation (Easiest)

- Only expose MCP on internal network (VPN)
- Render deployment: Add IP whitelist
- Only allow company IP ranges
- Block external access

Option 2: API Key Authentication (Better)

@mcp.tool()
def test_connection(api_key: str) -> str:
    if api_key not in AUTHORIZED_KEYS:
        return _err("Invalid API key")
    return actual_test_connection()

Option 3: Full RBAC (Best)

@mcp.tool()
def run_procurement_agent(
    api_key: str,
    user_id: str,
    workflow: str,
    organization_id: int
) -> str:
    user = authenticate(api_key)
    if not user:
        return _err("Unauthorized")

    allowed_orgs = get_user_organizations(user_id)
    if organization_id not in allowed_orgs:
        return _err(f"Not authorized for org {organization_id}")

    log_access(user, workflow, organization_id)
    return run_agent(...)

Summary

Current state: The MCP is a security risk if shared. It has:

• ✗ No authentication
• ✗ No authorization
• ✗ No audit logging
• ✗ Full data access to 196 organizations

Only share with: Trusted team members in your company

Before broader sharing: Implement authentication and authorization

For external sharing: Not recommended without enterprise security controls