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

`castVote` function in Governance contract allows to vote even if proposal has been canceled.

tadev

Summary

castVote function in Governance contract is defined as follows:

function castVote(uint256 proposalId, bool support) external override returns (uint256) {
// @audit MEDIUM: possible to cast votes once proposal is canceled
ProposalCore storage proposal = _proposals[proposalId];
if (proposal.startTime == 0) revert ProposalDoesNotExist(proposalId);
if (block.timestamp < proposal.startTime) {
revert VotingNotStarted(proposalId, proposal.startTime, block.timestamp);
}
if (block.timestamp > proposal.endTime) {
revert VotingEnded(proposalId, proposal.endTime, block.timestamp);
}
​
ProposalVote storage proposalVote = _proposalVotes[proposalId];
if (proposalVote.hasVoted[msg.sender]) {
revert AlreadyVoted(proposalId, msg.sender, block.timestamp);
}
​
uint256 weight = _veToken.getVotingPower(msg.sender);
if (weight == 0) {
revert NoVotingPower(msg.sender, block.number);
}
​
proposalVote.hasVoted[msg.sender] = true;
​
if (support) {
proposalVote.forVotes += weight;
} else {
proposalVote.againstVotes += weight;
}
​
emit VoteCast(msg.sender, proposalId, support, weight, "");
return weight;
}

The issue arises because there is no check that the proposal has been canceled or not. If the proposal has been canceled, it shouldn't be possible to record a new vote.

Impact

The impact of this issue is medium.

Tools Used

Manual review.

Recommendations

Make sure to check that the proposal is not canceled in castVote function:

function castVote(uint256 proposalId, bool support) external override returns (uint256) {
ProposalCore storage proposal = _proposals[proposalId];
// @audit: ensure that calls to castVote will revert if the proposal is canceled
if (proposal.canceled) revert();
if (proposal.startTime == 0) revert ProposalDoesNotExist(proposalId);
if (block.timestamp < proposal.startTime) {
revert VotingNotStarted(proposalId, proposal.startTime, block.timestamp);
}
if (block.timestamp > proposal.endTime) {
revert VotingEnded(proposalId, proposal.endTime, block.timestamp);
}
​
ProposalVote storage proposalVote = _proposalVotes[proposalId];
if (proposalVote.hasVoted[msg.sender]) {
revert AlreadyVoted(proposalId, msg.sender, block.timestamp);
}
​
uint256 weight = _veToken.getVotingPower(msg.sender);
if (weight == 0) {
revert NoVotingPower(msg.sender, block.number);
}
​
proposalVote.hasVoted[msg.sender] = true;
​
if (support) {
proposalVote.forVotes += weight;
} else {
proposalVote.againstVotes += weight;
}
​
emit VoteCast(msg.sender, proposalId, support, weight, "");
return weight;
}
Updates

Lead Judging Commences

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

Governance::castVote lacks canceled/executed proposal check, allowing users to waste gas voting on proposals that can never be executed

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

Governance::castVote lacks canceled/executed proposal check, allowing users to waste gas voting on proposals that can never be executed

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