The contract should implement emergency pause mechanisms to halt operations during security incidents or when vulnerabilities are discovered.
The contract lacks any emergency stop functionality that could prevent continued exploitation during security incidents, leaving users and funds vulnerable during the critical time needed to respond to attacks or deploy fixes.
contract EmergencyControlsTest {
RaiseBoxFaucet public faucet;
bool public attackInProgress;
constructor(address _faucet) {
faucet = RaiseBoxFaucet(_faucet);
}
function simulateUnstoppableAttack() external {
attackInProgress = true;
while (address(faucet).balance > 0 && attackInProgress) {
try faucet.claimFaucetTokens() {
} catch {
}
}
}
function demonstrateIncidentTimeline() external pure returns (
string memory phase1,
string memory phase2,
string memory phase3,
string memory phase4
) {
phase1 = "T+0min: Attack detected, funds draining";
phase2 = "T+15min: Team assesses vulnerability, no way to stop drain";
phase3 = "T+60min: Fix developed, but attacker still draining";
phase4 = "T+120min: New contract deployed, original funds lost";
return (phase1, phase2, phase3, phase4);
}
function showBestPracticeResponse() external pure returns (
string memory step1,
string memory step2,
string memory step3
) {
step1 = "T+0min: Attack detected, emergency pause activated immediately";
step2 = "T+15min: Vulnerability assessed safely, no further fund loss";
step3 = "T+60min: Fix deployed and tested, operations resumed safely";
return (step1, step2, step3);
}
}
The mitigation implements comprehensive emergency controls using OpenZeppelin's Pausable contract, providing immediate response capabilities during security incidents while maintaining proper access controls and transparency.
+ import "@openzeppelin/contracts/security/Pausable.sol";
- contract RaiseBoxFaucet is ERC20, Ownable, ReentrancyGuard {
+ contract RaiseBoxFaucet is ERC20, Ownable, ReentrancyGuard, Pausable {
// Add pause protection to critical functions
- function claimFaucetTokens() public nonReentrant {
+ function claimFaucetTokens() public nonReentrant whenNotPaused {
// All existing logic remains the same
// Function automatically blocked when paused
}
// Implement emergency pause with proper access controls
+ function emergencyPause() external onlyOwner {
+ require(!paused(), "Already paused");
+ _pause();
+ emit EmergencyPaused(msg.sender, block.timestamp, "Emergency pause activated");
+ }
+
+ // Implement gradual unpause with safety checks
+ function emergencyUnpause() external onlyOwner {
+ require(paused(), "Not paused");
+ _unpause();
+ emit EmergencyUnpaused(msg.sender, block.timestamp, "Emergency pause deactivated");
+ }
// Add pause protection to other critical functions
- function mintFaucetTokens(address to, uint256 amount) public onlyOwner {
+ function mintFaucetTokens(address to, uint256 amount) public onlyOwner whenNotPaused {
// Existing logic
}
- function refillSepEth(uint256 amountToRefill) external payable onlyOwner {
+ function refillSepEth(uint256 amountToRefill) external payable onlyOwner whenNotPaused {
// Existing logic
}
// Implement timelocked unpause for additional security
+ uint256 public constant UNPAUSE_DELAY = 6 hours; // Minimum pause duration
+ uint256 public pauseStartTime;
+
+ function _pause() internal override {
+ pauseStartTime = block.timestamp;
+ super._pause();
+ }
+
+ function emergencyUnpauseWithDelay() external onlyOwner {
+ require(paused(), "Not paused");
+ require(block.timestamp >= pauseStartTime + UNPAUSE_DELAY, "Minimum pause duration not met");
+ _unpause();
+ emit EmergencyUnpausedWithDelay(msg.sender, block.timestamp);
+ }
// Add view functions for emergency status monitoring
+ function getEmergencyStatus() external view returns (
+ bool isPaused,
+ uint256 pausedAt,
+ uint256 earliestUnpause
+ ) {
+ isPaused = paused();
+ pausedAt = pauseStartTime;
+ earliestUnpause = isPaused ? pauseStartTime + UNPAUSE_DELAY : 0;
+ return (isPaused, pausedAt, earliestUnpause);
+ }
// Allow view functions to work during pause for monitoring
+ function getFaucetTotalSupply() public view returns (uint256) {
+ return balanceOf(address(this)); // Works during pause for monitoring
+ }
+
+ function getContractSepEthBalance() public view returns (uint256) {
+ return address(this).balance; // Works during pause for monitoring
+ }
// Implement emergency withdrawal for owner (last resort)
+ function emergencyWithdrawEth() external onlyOwner {
+ require(paused(), "Can only withdraw ETH when paused");
+ require(address(this).balance > 0, "No ETH to withdraw");
+
+ uint256 amount = address(this).balance;
+ (bool success, ) = msg.sender.call{value: amount}("");
+ require(success, "ETH withdrawal failed");
+
+ emit EmergencyEthWithdrawn(msg.sender, amount);
+ }
// Add comprehensive emergency events
+ event EmergencyPaused(address indexed pauser, uint256 timestamp, string reason);
+ event EmergencyUnpaused(address indexed unpauser, uint256 timestamp, string reason);
+ event EmergencyUnpausedWithDelay(address indexed unpauser, uint256 timestamp);
+ event EmergencyEthWithdrawn(address indexed withdrawer, uint256 amount);
// Override receive and fallback to work during pause (for donations)
receive() external payable {
// Allow ETH donations even when paused
emit SepEthDonated(msg.sender, msg.value);
}
fallback() external payable {
// Allow ETH donations even when paused
emit SepEthDonated(msg.sender, msg.value);
}
