Submission Details
Severity:
Some tokens may revert when zero value transfers are made
Summary
In spite of the fact that EIP-20 states that zero-valued transfers must be accepted, some tokens, such as LEND will revert if this is attempted. See Weird ERC20 Tokens - Revert on Zero Value Transfers.
Vulnerability Details
There is 1 instance of this issue.
File: src/Distributor.sol
147: erc20.safeTransfer(winners[i], amount);
| File Link | Instance Count | Instance Link |
|---|---|---|
| Distributor.sol | 1 | 147 |
Impact
A zero-valued transfer may cause transactions that involve other tokens (such as batch operations) to fully revert.
Tools Used
baudit: a custom static code analysis tool; manual review
Recommendations
Consider skipping the transfer if the amount is zero, which will also save gas.
Prize pool breakdown
Total prize
15,000 USDC
nSLOC
19477 USDC / LOC
14,000 USDC
1,000 USDC
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