Core Contracts
Regnum Aurum Acquisition Corp
HardhatReal World AssetsNFT
77,280 USDC
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Submission Details
Severity: high
Valid

Missing Withdraw Function for Tokens Sent to RAACNFT

josh4324

Summary

The mint() function in the RAACNFT contract allows users to mint NFTs by paying an ERC-20 token. However, there is no function to withdraw accumulated tokens from the contract, leaving them permanently locked.

Vulnerability Details

​
function mint(uint256 _tokenId, uint256 _amount) public override {
uint256 price = raac_hp.tokenToHousePrice(_tokenId);
if(price == 0) { revert RAACNFT__HousePrice(); }
if(price > _amount) { revert RAACNFT__InsufficientFundsMint(); }
​
// transfer erc20 from user to contract - requires pre-approval from user
token.safeTransferFrom(msg.sender, address(this), _amount);
​
// mint tokenId to user
_safeMint(msg.sender, _tokenId);
​
// If user approved more than necessary, refund the difference
if (_amount > price) {
uint256 refundAmount = _amount - price;
token.safeTransfer(msg.sender, refundAmount);
}
​
emit NFTMinted(msg.sender, _tokenId, price);
}

When a user mints an NFT, the following occurs:

The user sends ERC-20 tokens to the contract:

token.safeTransferFrom(msg.sender, address(this), _amount);

The contract holds these tokens permanently since there is no function to withdraw them.

Impact

Since there is no withdraw() function, tokens sent to the contract cannot be retrieved.

Tools Used

Manual Review

Recommendations

Add a withdraw() Function for the Contract Owner

Updates

Lead Judging Commences

inallhonesty Lead Judge 7 months ago
Submission Judgement Published
Validated
Assigned finding tags:

RAACNFT collects payment for NFT minting but lacks withdrawal functionality, permanently locking all tokens in the contract

inallhonesty Lead Judge 7 months ago
Submission Judgement Published
Validated
Assigned finding tags:

RAACNFT collects payment for NFT minting but lacks withdrawal functionality, permanently locking all tokens in the contract

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