198 lines
4.9 KiB
Markdown
198 lines
4.9 KiB
Markdown
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# Security Checklist
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**Date**: 2026-01-24
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**Status**: Pre-Audit Security Review
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---
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## 🔒 **Security Review Checklist**
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### **1. Access Control** ✅
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- [x] All admin functions protected with `onlyRole(DEFAULT_ADMIN_ROLE)`
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- [x] Critical functions use role-based access control
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- [x] Role assignments are properly restricted
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- [x] No public functions that modify critical state
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- [ ] Review role escalation vectors
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- [ ] Verify role revocation works correctly
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### **2. Reentrancy Protection** ✅
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- [x] `ReentrancyGuard` used in bridge contracts
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- [x] `nonReentrant` modifier on critical functions
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- [x] Checks-Effects-Interactions pattern followed
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- [ ] Review all external calls for reentrancy risks
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- [ ] Test reentrancy attack scenarios
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### **3. Integer Overflow/Underflow** ✅
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- [x] Solidity 0.8.20+ (built-in overflow protection)
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- [x] SafeMath not needed (compiler handles it)
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- [ ] Review arithmetic operations for edge cases
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- [ ] Test with maximum values
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### **4. Input Validation** ✅
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- [x] Zero address checks
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- [x] Amount validation (non-zero, within limits)
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- [x] Destination validation in adapters
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- [ ] Review all user inputs
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- [ ] Test with invalid inputs
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### **5. Upgrade Safety** ✅
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- [x] UUPS proxy pattern used
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- [x] `_authorizeUpgrade` protected
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- [x] Storage layout compatibility maintained
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- [ ] Review upgrade paths
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- [ ] Test upgrade scenarios
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### **6. Oracle Security** ⚠️
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- [x] Multiple price feeds for XAU Oracle
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- [x] Staleness checks implemented
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- [x] Quorum requirements for Reserve Oracle
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- [ ] Review oracle manipulation risks
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- [ ] Test oracle failure scenarios
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- [ ] Implement circuit breakers
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### **7. Bridge Security** ⚠️
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- [x] Request ID generation uses nonces
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- [x] Status tracking prevents double execution
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- [x] Cancellation mechanism implemented
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- [ ] Review cross-chain message validation
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- [ ] Test message replay attacks
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- [ ] Verify CCIP message authentication
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### **8. Token Security** ✅
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- [x] ERC20 standard compliance
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- [x] Transfer restrictions enforced
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- [x] Mint/burn controls implemented
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- [ ] Review token approval risks
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- [ ] Test token transfer edge cases
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### **9. Vault Security** ⚠️
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- [x] Health ratio checks before operations
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- [x] Liquidation protection
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- [x] Debt ceiling enforcement
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- [ ] Review liquidation mechanics
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- [ ] Test undercollateralized scenarios
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- [ ] Verify interest accrual accuracy
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### **10. Compliance & Regulatory** ✅
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- [x] KYC checks in ISO-4217W system
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- [x] Reserve verification
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- [x] Jurisdiction restrictions
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- [ ] Review compliance logic
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- [ ] Test compliance bypass attempts
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---
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## 🛡️ **Security Best Practices**
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### **Code Quality**
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- [x] Use latest Solidity version (0.8.20)
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- [x] Follow OpenZeppelin patterns
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- [x] Comprehensive error messages
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- [ ] Code review completed
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- [ ] Documentation complete
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### **Testing**
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- [x] Unit tests for core functions
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- [x] Integration tests
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- [ ] Fuzz testing
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- [ ] Formal verification (if applicable)
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- [ ] Test coverage > 80%
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### **Monitoring**
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- [ ] Event logging for critical operations
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- [ ] Admin alerts for unusual activity
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- [ ] Bridge monitoring dashboard
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- [ ] Oracle health checks
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---
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## 🚨 **Known Risks & Mitigations**
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### **High Risk**
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1. **Oracle Manipulation**
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- **Risk**: Single oracle failure or manipulation
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- **Mitigation**: Multiple price feeds, quorum requirements, staleness checks
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- **Status**: ⚠️ Needs review
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2. **Bridge Message Replay**
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- **Risk**: Replay of cross-chain messages
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- **Mitigation**: Request IDs, nonces, status tracking
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- **Status**: ⚠️ Needs testing
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3. **Liquidation Attacks**
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- **Risk**: Front-running liquidation transactions
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- **Mitigation**: MEV protection, fair liquidation
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- **Status**: ⚠️ Needs review
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### **Medium Risk**
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1. **Upgrade Risks**
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- **Risk**: Storage collision during upgrades
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- **Mitigation**: UUPS pattern, storage layout checks
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- **Status**: ✅ Implemented
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2. **Access Control**
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- **Risk**: Role escalation or unauthorized access
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- **Mitigation**: Role-based access control, multi-sig
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- **Status**: ✅ Implemented
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---
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## 📋 **Pre-Audit Preparation**
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### **Required Documentation**
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- [x] Architecture documentation
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- [x] Contract specifications
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- [x] Deployment procedures
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- [ ] Threat model
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- [ ] Risk assessment
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### **Test Coverage**
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- [x] Unit tests
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- [x] Integration tests
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- [ ] Fuzz tests
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- [ ] Formal verification
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### **Code Review**
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- [x] Internal code review
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- [ ] External security review
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- [ ] Audit scheduled
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---
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## ✅ **Security Audit Readiness**
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**Status**: ⚠️ **In Progress**
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**Completed**:
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- ✅ Access control implementation
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- ✅ Reentrancy protection
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- ✅ Input validation
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- ✅ Upgrade safety
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**Pending**:
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- ⏳ Comprehensive security audit
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- ⏳ Fuzz testing
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- ⏳ Formal verification
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- ⏳ External code review
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---
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**Next Steps**:
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1. Complete fuzz testing
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2. Schedule security audit
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3. Address audit findings
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4. Deploy to testnet
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5. Monitor and iterate
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