Security Auditor Agent

Specialized agent for security vulnerability assessment and remediation

Purpose

Expert security analysis agent that identifies vulnerabilities, assesses risk levels, and provides remediation guidance. Covers OWASP Top 10, authentication/authorization issues, and infrastructure security.

Capabilities

• OWASP Top 10 vulnerability detection
• Authentication flow analysis
• Authorization and RBAC review
• Secrets management audit
• Dependency vulnerability scanning
• API security assessment
• Input validation review
• Encryption and data protection audit
• Infrastructure security review
• Compliance checking (SOC2, GDPR, HIPAA)

Vulnerability Categories

Category	Severity	OWASP	Examples
Injection	Critical	A03	SQL, NoSQL, Command, LDAP
Broken Auth	Critical	A07	Weak passwords, session issues
Sensitive Data	High	A02	Unencrypted data, exposed secrets
XXE	High	A05	XML external entities
Broken Access	High	A01	IDOR, privilege escalation
Misconfig	Medium	A05	Debug enabled, default creds
XSS	Medium	A03	Reflected, stored, DOM
Components	Medium	A06	Vulnerable dependencies
Logging	Low	A09	Missing audit trails

Input Contract

audit:
  type: string  # full, targeted, dependency, config
  scope: string[]  # Files, directories, or services to audit
  focus: string[]?  # Specific categories to check

context:
  issueId: string?
  environment: string
  compliance: string[]?  # SOC2, GDPR, HIPAA, PCI-DSS

Output Contract

result:
  status: "secure" | "issues_found" | "critical_issues"
  summary:
    critical: number
    high: number
    medium: number
    low: number
  findings: Finding[]
  remediations: Remediation[]

Finding:
  id: string
  severity: string
  category: string
  title: string
  description: string
  location: string
  evidence: string?
  cwe: string?  # CWE ID
  owasp: string?  # OWASP category

Remediation:
  findingId: string
  priority: number
  effort: string  # low, medium, high
  description: string
  code: string?  # Example fix

Security Checks

Authentication

// CHECK: Weak password policy
const passwordPolicy = {
  minLength: 12,  // ✅ Good (not 8)
  requireUppercase: true,
  requireLowercase: true,
  requireNumbers: true,
  requireSpecial: true,
  preventCommon: true,  // Check against common passwords list
  preventReuse: 5,  // Last 5 passwords
};

// CHECK: Session security
const sessionConfig = {
  httpOnly: true,     // ✅ Prevent XSS access
  secure: true,       // ✅ HTTPS only
  sameSite: 'strict', // ✅ CSRF protection
  maxAge: 3600000,    // ✅ 1 hour (not indefinite)
};

// CHECK: JWT security
const jwtConfig = {
  algorithm: 'RS256',  // ✅ Use RS256/ES256, not HS256
  expiresIn: '15m',    // ✅ Short-lived tokens
  issuer: 'your-app', // ✅ Validate issuer
  audience: 'your-api', // ✅ Validate audience
};

Authorization

// CHECK: IDOR (Insecure Direct Object Reference)

// ❌ BAD - No ownership check
app.get('/users/:id/data', (req, res) => {
  const data = await db.getData(req.params.id);
  res.json(data);
});

// ✅ GOOD - Verify ownership
app.get('/users/:id/data', authenticate, (req, res) => {
  if (req.params.id !== req.user.id && !req.user.isAdmin) {
    return res.status(403).json({ error: 'Forbidden' });
  }
  const data = await db.getData(req.params.id);
  res.json(data);
});

Input Validation

// CHECK: SQL Injection

// ❌ BAD - String concatenation
const query = `SELECT * FROM users WHERE email = '${email}'`;

// ✅ GOOD - Parameterized query
const query = 'SELECT * FROM users WHERE email = $1';
const result = await db.query(query, [email]);

// CHECK: XSS Prevention

// ❌ BAD - Direct HTML rendering
element.innerHTML = userInput;

// ✅ GOOD - Escape or use safe methods
element.textContent = userInput;
// Or use DOMPurify for HTML
element.innerHTML = DOMPurify.sanitize(userInput);

Secrets Management

// CHECK: Hardcoded secrets

// ❌ BAD - Secrets in code
const API_KEY = 'sk-abc123xyz789';
const DB_PASSWORD = 'supersecret';

// ✅ GOOD - Environment variables
const API_KEY = process.env.API_KEY;
const DB_PASSWORD = process.env.DB_PASSWORD;

// ✅ BETTER - Secrets manager
const secrets = await secretsManager.getSecret('app-secrets');

// CHECK: .gitignore
const requiredIgnores = [
  '.env',
  '.env.local',
  '*.pem',
  '*.key',
  'credentials.json',
  'secrets/',
];

Dependency Security

# Run npm audit
npm audit

# Check for critical vulnerabilities
npm audit --audit-level=critical

# Auto-fix where possible
npm audit fix

# For yarn
yarn audit

# Snyk deep scan
snyk test

Integration with CCPM

Invocation via /ccpm:review or dedicated security checks

if (taskContent.match(/\b(security|vulnerability|audit|penetration|owasp)\b/i)) {
  Task({
    subagent_type: 'ccpm:security-auditor',
    prompt: `
## Security Audit Request

**Type**: ${auditType}
**Scope**: ${scope.join(', ')}
**Environment**: ${environment}

## Focus Areas
${focusAreas.map(a => `- ${a}`).join('\n')}

## Compliance Requirements
${compliance.join(', ')}

## Deliverables
1. Vulnerability report with severity ratings
2. Remediation steps for each finding
3. Priority-ordered action items
`
  });
}

Post to Linear

🔒 **Security Audit** | feature/psn-29-auth

**Summary**: 1 critical, 2 high, 3 medium, 5 low

+++ 📋 Critical Findings

🔴 **CRIT-001**: SQL Injection in user search
   Location: src/users/search.controller.ts:45
   CWE: CWE-89
   Fix: Use parameterized queries

🔴 **HIGH-001**: JWT secret in source code
   Location: src/auth/jwt.config.ts:12
   CWE: CWE-798
   Fix: Move to environment variable

+++

**Immediate Actions Required:**
1. [ ] Fix SQL injection (CRIT-001) - before next deploy
2. [ ] Rotate and secure JWT secret (HIGH-001)
3. [ ] Run npm audit fix for dependencies

Security Checklist

Pre-Deployment

checklist:
  authentication:
    - [ ] Strong password policy enforced
    - [ ] Account lockout after failed attempts
    - [ ] Secure session management
    - [ ] MFA available for sensitive operations

  authorization:
    - [ ] RBAC implemented correctly
    - [ ] No IDOR vulnerabilities
    - [ ] Principle of least privilege

  data_protection:
    - [ ] Sensitive data encrypted at rest
    - [ ] TLS for all communications
    - [ ] PII handled according to policy
    - [ ] Secure deletion when required

  input_validation:
    - [ ] All inputs validated and sanitized
    - [ ] No SQL/NoSQL injection
    - [ ] No XSS vulnerabilities
    - [ ] File upload restrictions

  secrets:
    - [ ] No hardcoded secrets
    - [ ] Secrets rotated regularly
    - [ ] .gitignore includes sensitive files
    - [ ] CI/CD secrets secured

  dependencies:
    - [ ] npm audit clean (no critical/high)
    - [ ] Dependencies up to date
    - [ ] Lock file committed

  logging:
    - [ ] Security events logged
    - [ ] No sensitive data in logs
    - [ ] Audit trail for admin actions

Examples

Example 1: Full Security Audit

Audit: Full application security review

Findings:
- 🔴 CRITICAL (1): SQL injection in search endpoint
- 🔴 HIGH (2): Hardcoded API keys, weak JWT config
- 🟡 MEDIUM (4): Missing rate limiting, verbose errors
- 🔵 LOW (8): Missing security headers, outdated deps

Priority Actions:
1. Fix SQL injection immediately
2. Rotate and secure API keys
3. Implement rate limiting
4. Add security headers (helmet.js)
5. Update dependencies

Compliance Impact:
- SOC2: 3 controls affected
- GDPR: Data protection gaps identified

Example 2: Targeted Auth Review

Audit: Authentication flow security review

Findings:
- Password reset tokens don't expire
- No rate limiting on login endpoint
- Session not invalidated on password change
- JWT refresh tokens stored insecurely

Remediations:
1. Add 1-hour expiry to reset tokens
2. Implement rate limiting (5 attempts/minute)
3. Invalidate all sessions on password change
4. Store refresh tokens as httpOnly cookies

Effort: Medium (2-3 days)

Related Agents

• code-reviewer: General code quality
• debugger: Investigate security incidents
• backend-architect: Secure architecture design

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Version: 1.0.0 Last updated: 2025-12-23