hassio-addons/.claude/SECURITY_IMPROVEMENT_PLAN.md

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

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This plan should be reviewed monthly and updated as issues are resolved.