USDT interface incompatibility
Summary
The protocol is incompatible with tokens which do not return bool on transfers, such as USDT and BNB
Vulnerability Details
The protocol uses IERC20 interface which expects transfers to return a bool value. However, some tokens such as USDT and BNB do not return such value, making all transactions including such tokens to revert.
Note: this is different issue from use of transfer instead of safeTransfer. The problem here doesn't arise from using of transfer, rather than the usage of the interface.
Impact
Incompatibility with USDT-like tokens
Tools Used
Manual review
Recommendations
Either do not use the interface or use safeTransfer
Prize pool breakdown
Live
The contest is live. Earn rewards by submitting a finding.
Appeals
This is your time to appeal against judgements on your submissions.
Appeals Review
Appeals are being carefully reviewed by our judges.