v3-security-overhaul

# V3 Security Overhaul ## What This Skill Does Orchestrates comprehensive security overhaul for claude-flow v3, addressing critical vulnerabilities and establishing security-first development practices using specialized v3 security agents. ## Quick Start ```bash # Initialize V3 security domain (parallel) Task("Security architecture", "Design v3 threat model and security boundaries", "v3-security-architect") Task("CVE remediation", "Fix CVE-1, CVE-2, CVE-3 critical vulnerabilities", "security-auditor") Task("Security testing", "Implement TDD London School security framework", "test-architect") ``` ## Critical Security Fixes ### CVE-1: Vulnerable Dependencies ```bash npm update @anthropic-ai/claude-code@^2.0.31 npm audit --audit-level high ``` ### CVE-2: Weak Password Hashing ```typescript // ❌ Old: SHA-256 with hardcoded salt const hash = crypto.createHash('sha256').update(password + salt).digest('hex'); // ✅ New: bcrypt with 12 rounds import bcrypt from 'bcrypt'; const hash = await bcrypt.hash(password, 12); ``` ### CVE-3: Hardcoded Credentials ```typescript // ✅ Generate secure random credentials const apiKey = crypto.randomBytes(32).toString('hex'); ``` ## Security Patterns ### Input Validation (Zod) ```typescript import { z } from 'zod'; const TaskSchema = z.object({ taskId: z.string().uuid(), content: z.string().max(10000), agentType: z.enum(['security', 'core', 'integration']) }); ``` ### Path Sanitization ```typescript function securePath(userPath: string, allowedPrefix: string): string { const resolved = path.resolve(allowedPrefix, userPath); if (!resolved.startsWith(path.resolve(allowedPrefix))) { throw new SecurityError('Path traversal detected'); } return resolved; } ``` ### Safe Command Execution ```typescript import { execFile } from 'child_process'; // ✅ Safe: No shell interpretation const { stdout } = await execFile('git', [userInput], { shell: false }); ``` ## Success Metrics - **Security Score**: 90/100 (npm audit + custom scans) - **CVE Resolution**: 100% of critical vulnerabilities fixed - **Test Coverage**: >95% security-critical code - **Implementation**: All secure patterns documented and tested