⬇ Download holy card: ·
Saint proxyOverflow, Multiplier of Tokens
Patron of ERC20 tokens, overflowing integers, and contracts that cannot be patched.
Life
On 25 April 2018 PeckShield described proxyOverflow, an integer overflow in the transferProxy function of the SmartMesh (SMT) token, already exploited in those days. Thanks to a sum that overflowed, someone found themselves holding an astronomical number of tokens created from nothing, and several exchanges suspended SMT deposits and trading. It came three days after its twin, batchOverflow: April 2018 was a month of arithmetic miracles.
Prayer
O Saint proxyOverflow, who multiplies tokens like loaves but without permission, let our contracts use SafeMath and count properly. Amen.
How to celebrate
Celebrated by checking every sum before doing it, and remembering that a deployed contract does not take patches.
An overflowing sum makes a swollen purse.