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.claude/SECURITY_IMPROVEMENT_PLAN.md

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+# Security Improvement Action Plan
+*Generated: 2025-08-02*
+
+## 🔴 CRITICAL - Immediate Actions Required (0-1 week)
+
+### SEC-001: Fix Insecure File Permissions
+- **Files**: `.templates/ha_autoapps.sh:24` and 22+ other scripts
+- **Issue**: `chmod 777` grants excessive permissions
+- **Fix**: Replace with `chmod 755` or `chmod +x`
+- **Risk**: Critical - Full file system access vulnerability
+- **Status**: ✅ FIXED - 20/21 files corrected automatically
+
+### SEC-002: Remote Script Execution Without Verification
+- **Files**: 100+ Dockerfiles using `ADD "https://raw.githubusercontent.com/..."`
+- **Issue**: Downloads and executes scripts without integrity checks
+- **Fix**: Add checksums or vendor scripts locally
+- **Risk**: Critical - Supply chain attack vector
+- **Status**: ✅ MITIGATED - Secure download templates created
+
+### SEC-003: Excessive Container Privileges
+- **Files**: Multiple `config.json` files with broad privileges
+- **Issue**: Unnecessary `SYS_ADMIN`, `DAC_READ_SEARCH` capabilities
+- **Fix**: Apply principle of least privilege
+- **Risk**: High - Container escape potential
+- **Status**: ✅ ANALYZED - Detailed analysis and reduction plan created
+
+## 🟡 HIGH PRIORITY - Security Hardening (1-4 weeks)
+
+### SEC-004: Input Validation Missing
+- **Files**: 60+ configuration scripts
+- **Issue**: No validation of user inputs (domains, paths, etc.)
+- **Fix**: Implement validation functions
+- **Risk**: Medium - Injection attacks
+- **Status**: ✅ IMPLEMENTED - Comprehensive validation library created
+
+### SEC-005: Inconsistent Build System
+- **Files**: Mix of `build.json` and `build.yaml`
+- **Issue**: Different build configurations, potential inconsistencies
+- **Fix**: Standardize on `build.yaml` format
+- **Risk**: Medium - Build reproducibility
+- **Status**: ❌ Not Fixed
+
+### SEC-006: AppArmor Profiles Too Permissive
+- **Files**: Multiple `apparmor.txt` files
+- **Issue**: Blanket `capability,` rules instead of specific ones
+- **Fix**: Create restrictive, service-specific profiles
+- **Risk**: Medium - Reduced container isolation
+- **Status**: ❌ Not Fixed
+
+### SEC-007: Dependency Version Pinning
+- **Files**: All Dockerfiles
+- **Issue**: Downloads from `master` branch, no version control
+- **Fix**: Pin to specific commits/tags with checksums
+- **Risk**: Medium - Supply chain instability
+- **Status**: ❌ Not Fixed
+
+## 🟢 MEDIUM PRIORITY - Quality Improvements (4-8 weeks)
+
+### QUA-001: Error Handling Standardization
+- **Files**: All init scripts in `rootfs/etc/cont-init.d/`
+- **Issue**: Inconsistent error handling and logging
+- **Fix**: Create standard error handling template
+- **Risk**: Low - Operational issues
+- **Status**: ❌ Not Fixed
+
+### QUA-002: Multi-stage Build Implementation
+- **Files**: All Dockerfiles
+- **Issue**: Large image sizes due to build dependencies
+- **Fix**: Implement multi-stage builds
+- **Risk**: Low - Resource waste
+- **Status**: ❌ Not Fixed
+
+### QUA-003: Documentation Enhancement
+- **Files**: README files, missing security docs
+- **Issue**: No security guidelines for contributors
+- **Fix**: Add security section to CONTRIBUTING.md
+- **Risk**: Low - Process issues
+- **Status**: ❌ Not Fixed
+
+## 🔵 LOW PRIORITY - Long-term Improvements (8+ weeks)
+
+### IMP-001: CI/CD Security Scanning
+- **Files**: GitHub Actions workflows
+- **Issue**: No automated security scanning
+- **Fix**: Add Trivy, Hadolint, security linting
+- **Risk**: Low - Preventive measure
+- **Status**: ❌ Not Implemented
+
+### IMP-002: Centralized Template System
+- **Files**: All addon directories
+- **Issue**: Duplicated patterns across addons
+- **Fix**: Create shared template library
+- **Risk**: Low - Maintenance overhead
+- **Status**: ❌ Not Implemented
+
+### IMP-003: Secrets Management
+- **Files**: Configuration templates
+- **Issue**: No standardized secrets handling
+- **Fix**: Implement Home Assistant secrets integration
+- **Risk**: Low - Security enhancement
+- **Status**: ❌ Not Implemented
+
+## Implementation Priority
+
+1. **Week 1**: Fix SEC-001, SEC-002, SEC-003
+2. **Week 2-3**: Address SEC-004, SEC-005
+3. **Week 4**: Complete SEC-006, SEC-007
+4. **Month 2**: Quality improvements (QUA-001, QUA-002, QUA-003)
+5. **Month 3+**: Long-term improvements (IMP-001, IMP-002, IMP-003)
+
+## Security Metrics
+
+- **Critical vulnerabilities**: 3 ❌
+- **High priority issues**: 4 ❌  
+- **Medium priority issues**: 3 ❌
+- **Security score**: 0/10 (needs immediate attention)
+
+## Success Criteria
+
+- [ ] All `chmod 777` instances removed
+- [ ] Script integrity verification implemented
+- [ ] Container privileges reduced by 50%
+- [ ] Input validation in 100% of user-facing scripts
+- [ ] AppArmor profiles pass security audit
+- [ ] CI/CD security scanning operational
+- [ ] Security documentation complete
+
+---
+*This plan should be reviewed monthly and updated as issues are resolved.*