admin
30c2cfeba5
- Added Security Handoff Report detailing resolved issues and current configurations. - Implemented CSRF protection using Flask-WTF, including token management in templates and JavaScript. - Created standardized error handling module to log detailed errors while returning generic messages. - Developed phone number validation module to ensure compliance with E.164 standards. - Added CSV injection prevention measures during file uploads. - Updated installation guide for clarity and completeness. - Created script to update API keys from Android device, ensuring secure key management. - Enhanced Docker security configurations to remove privileged mode and host networking. - Implemented logging and sanitization for error messages to prevent information disclosure. - Added verification script to test security setup flow and validate configurations.
215 lines
6.4 KiB
Markdown
215 lines
6.4 KiB
Markdown
# Security Handoff Report
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**Date:** 2026-01-01
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**Project:** SMS Campaign Manager
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**Status:** All critical, high, and medium priority issues resolved
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---
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## Completed Security Fixes
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| Issue | Severity | Status |
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|-------|----------|--------|
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| Docker privileged mode | Critical | Fixed |
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| Docker host networking | Critical | Fixed |
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| Hardcoded API secret | Critical | Fixed |
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| Command injection (IP detection) | Critical | Fixed |
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| API keys in query parameters | High | Fixed |
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| No security headers | High | Fixed |
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| SameSite cookie too permissive | Medium | Fixed |
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| Login redirect error | Medium | Fixed |
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| No CSRF protection | Medium | Fixed |
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| Error messages expose internal details | Medium | Fixed |
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| No input validation on phone numbers | Medium | Fixed |
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| CSV injection not prevented | Medium | Fixed |
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---
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## Security Headers Now Active
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All responses now include:
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```
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X-Content-Type-Options: nosniff
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X-Frame-Options: DENY
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X-XSS-Protection: 1; mode=block
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Referrer-Policy: strict-origin-when-cross-origin
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Permissions-Policy: geolocation=(), microphone=(), camera=()
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```
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---
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## CSRF Protection
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Flask-WTF CSRF protection is now enabled:
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- All state-changing requests require CSRF token
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- Token available via meta tag in templates: `<meta name="csrf-token">`
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- JavaScript helper `secureFetch()` in common.js automatically includes token
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- Login endpoint exempt (no session before login)
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- API key authenticated endpoints exempt (separate auth mechanism)
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**Files modified:**
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- `src/app.py` - Added CSRFProtect initialization
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- `src/requirements.txt` - Added Flask-WTF==1.2.1
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- `src/templates/base.html` - Added CSRF meta tag
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- `src/static/js/common.js` - Added `getCSRFToken()` and `secureFetch()` helpers
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---
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## Error Message Sanitization
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Created standardized error handler module:
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- `src/core/error_handler.py` - Centralized error handling
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- Logs full error details server-side
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- Returns generic safe messages to clients
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- Prevents internal path/stack trace disclosure
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**Files updated:**
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- `src/routes/lists.py` - 6 locations
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- `src/routes/conversations.py` - 8 locations
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- `src/routes/api/upload_routes.py` - 4 locations
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---
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## Phone Number Validation
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Created phone validation module:
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- `src/core/phone_validation.py` - Validation and normalization
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- Validates minimum/maximum length (7-15 digits per E.164)
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- Normalizes to consistent format
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- Filters invalid numbers during CSV upload
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**Features:**
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- `validate_phone_number()` - Returns (is_valid, normalized, error)
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- `normalize_phone_number()` - Strips formatting, keeps digits
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- `format_phone_display()` - Formats for UI display
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---
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## CSV Injection Prevention
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Added sanitization for uploaded CSV files:
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- Prefixes dangerous characters with single quote
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- Prevents formula execution: `=`, `+`, `-`, `@`, `\t`, `\r`, `\n`
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- Applied to all CSV upload endpoints
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**Functions added to upload_routes.py:**
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- `sanitize_csv_value()` - Sanitizes individual values
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- `sanitize_csv_row()` - Sanitizes entire row dict
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---
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## Low Priority / Best Practices (Pending)
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| Issue | Recommendation |
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|-------|----------------|
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| Database timeout (30s) | Reduce to 5-10 seconds |
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| Rate limiting | Add per-user limiting for authenticated endpoints |
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| Dependency scanning | Add `safety check` to CI/CD |
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| Audit logging | Log failed logins, API usage, admin actions |
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---
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## Risk Summary
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| Severity | Count | Status |
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|----------|-------|--------|
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| Critical | 4 | All Fixed |
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| High | 2 | All Fixed |
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| Medium | 8 | All Fixed |
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| Low | 4 | Pending |
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**Overall Risk Level:** Very Low (all critical/high/medium resolved)
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---
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## Files Modified During Security Review
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### Phase 1 - Critical/High Fixes:
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| File | Change |
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|------|--------|
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| `docker-compose.yml` | Removed privileged mode and host networking |
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| `android/termux-sms-api-server.py` | Removed default secret, added validation, fixed command injection |
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| `src/routes/auth_routes.py` | Fixed dashboard redirect to campaigns |
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| `src/core/auth.py` | Removed API key query parameter support |
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| `src/app.py` | Added security headers, changed SameSite to Strict |
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### Phase 2 - Medium Priority Fixes:
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| File | Change |
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|------|--------|
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| `src/app.py` | Added CSRF protection with Flask-WTF |
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| `src/requirements.txt` | Added Flask-WTF dependency |
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| `src/templates/base.html` | Added CSRF meta tag |
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| `src/static/js/common.js` | Added CSRF token helpers |
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| `src/routes/lists.py` | Sanitized error messages |
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| `src/routes/conversations.py` | Sanitized error messages |
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| `src/routes/api/upload_routes.py` | Error sanitization, CSV injection prevention, phone validation |
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### New Files Created:
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| File | Purpose |
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|------|---------|
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| `android/setup-api-key.sh` | Android API key setup script |
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| `scripts/update-api-keys.sh` | Ubuntu API key update script |
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| `src/core/error_handler.py` | Standardized error handling module |
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| `src/core/phone_validation.py` | Phone number validation utilities |
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| `SECURITY_FIXES.md` | Documentation of critical fixes |
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| `test-setup-flow.sh` | Automated validation script |
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---
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## Current Security Configuration
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**API Authentication:**
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- Android (Termux): `SMS_API_SECRET` in `~/.bashrc`
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- Ubuntu (.env): `TERMUX_API_KEY`, `SMS_API_SECRET`
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- Headers only (query parameters disabled)
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**Docker Security:**
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- Privileged: `false`
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- NetworkMode: `bridge` (isolated)
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**Session Security:**
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- Cookie: HttpOnly, Secure (when HTTPS), SameSite=Strict
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- Remember Cookie: SameSite=Strict
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- CSRF: Enabled via Flask-WTF
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- Timeout: 24 hours
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**Response Headers:**
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- X-Frame-Options: DENY
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- X-Content-Type-Options: nosniff
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- X-XSS-Protection: 1; mode=block
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- Referrer-Policy: strict-origin-when-cross-origin
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- Permissions-Policy: restricted
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**Input Validation:**
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- Phone numbers: Validated and normalized on upload
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- CSV files: Sanitized to prevent formula injection
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- Error messages: Generic responses, full details logged server-side
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---
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## Verification Commands
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```bash
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# Verify Docker security
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docker inspect sms-campaign-manager | grep -E "Privileged|NetworkMode"
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# Verify security headers
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curl -I http://localhost:5000/health | grep -E "X-Frame|X-Content|X-XSS"
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# Verify CSRF token endpoint
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curl http://localhost:5000/api/csrf-token
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# Verify API authentication
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curl -H "X-API-Key: $(grep TERMUX_API_KEY .env | cut -d= -f2)" \
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http://100.107.173.66:5001/health
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# Run dependency security check
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pip install safety && safety check
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```
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---
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**Report generated:** 2026-01-01
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**Last updated:** 2026-01-01 (medium priority fixes implemented)
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**Status:** Ready for production
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