GSC will lose allowance if it tries to lower a spender's approval

Lines of code Vulnerability details Impact GSC will lose allowance if it tries to lower a spender's approval. Proof of Concept When gsc update a spender's approval, the gscAllowance will always decrease by amount: function gscApprove address token, address spender, uint256 amount external...

Front running issue when updating the GSC allowance

Lines of code Vulnerability details Impact This would lead to loss of funds as the attacker drained tokens based on old allowance. Proof of Concept The issue is between these two lines: 1. The new allowance amount is set in storage via gscAllowancetoken = newAllowance 2. The GSCAllowanceUpdated...