Submission Details
Severity:
[H-2] Reentrancy in InheritanceManager::withdrawInheritedFunds
Summary
Due to reentrancy guard being absent malicious benificary contract and call InheritanceManager::withdrawInheritedFunds from their receive function and can drain the eth funds of other benefeciers.
Vulnerability Details
Affected function
function withdrawInheritedFunds(address _asset) external {
if (!isInherited) {
revert NotYetInherited();
}
uint256 divisor = beneficiaries.length;
if (_asset == address(0)) {
uint256 ethAmountAvailable = address(this).balance;
uint256 amountPerBeneficiary = ethAmountAvailable / divisor;
for (uint256 i = 0; i < divisor; i++) {
address payable beneficiary = payable(beneficiaries[i]);
(bool success,) = beneficiary.call{value: amountPerBeneficiary}("");
require(success, "something went wrong");
}
} else {
uint256 assetAmountAvailable = IERC20(_asset).balanceOf(address(this));
uint256 amountPerBeneficiary = assetAmountAvailable / divisor;
for (uint256 i = 0; i < divisor; i++) {
IERC20(_asset).safeTransfer(beneficiaries[i], amountPerBeneficiary);
}
}
}
Impact
High impact causes the benificiers to lose their funds.
Tools Used
foundry
Recommendations
Mitigation-
Add reenctrancy guard modifier to the function
function withdrawInheritedFunds(address _asset) external nonReentrant
Rewards breakdown
nSLOC
211This contest has a flat reward structure with the following payouts:
100 EXP
20 EXP
2 EXP
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