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Merge pull request #221 from TokenMarketNet/feat/transfer-from-mitigation

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Protect transferFrom() against short hand attack.
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Manuel Aráoz
2017-05-18 12:43:51 -03:00
committed by GitHub
parent 5c491987f3 964185dec3
commit ecbfcbb302
1 changed files with 1 additions and 1 deletions
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contracts/token/StandardToken.sol
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@ -16,7 +16,7 @@ contract StandardToken is BasicToken, ERC20 {
mapping (address => mapping (address => uint)) allowed;
function transferFrom(address _from, address _to, uint _value) {
function transferFrom(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met