Submitted by cmichel, also found by Czar102, defsec, hack3r-0m, hyh, Ruhum, saian, Tomio, and WatchPug
The ERC20.transfer() and ERC20.transferFrom() functions return a boolean value indicating success. This parameter needs to be checked for success.
Some tokens do not revert if the transfer failed but return false instead.
Tokens that dont actually perform the transfer and return false are still counted as a correct transfer.
As the Launch event token can be any token, all interactions with it should follow correct EIP20 checks.
We recommend checking the success boolean of all .transfer and .transferFrom calls for the unknown token contract.
cryptofish7 (Trader Joe) confirmed and commented:
LSDan (judge) commented:
