Sablier

Summary

During the audit we've identified a vulnerability related to zero-value transfers in the Sablier project. Some tokens, like LEND, may revert when zero-value transfers are attempted, deviating from the EIP-20 standard. This behavior can cause transactions involving affected tokens to fully revert.

Vulnerability Details

Zero-Value Transfer Reversion

• Issue: Certain tokens, like LEND, may revert when zero-value transfers are attempted.

• Example: Refer to the provided GitHub example for more details on this behavior.

Impact

Transaction Reversion: Zero-value transfers of affected tokens can cause transactions involving these tokens to fully revert.

Tools Used

Manual code review

Recommendations

Add a check to skip token transfers if the transfer amount is zero.