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vm: check ByteArray size before converting to Integer

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This commit is contained in:
Evgenii Stratonikov 2020-05-20 12:31:52 +03:00
parent 8f5f6fba07
commit ee9adcdc5c
1 changed files with 2 additions and 3 deletions
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5
pkg/vm/stack_item.go
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@ -524,11 +524,10 @@ func (i *ByteArrayItem) TryBytes() ([]byte, error) {
// TryInteger implements StackItem interface. // TryInteger implements StackItem interface.
func (i *ByteArrayItem) TryInteger() (*big.Int, error) { func (i *ByteArrayItem) TryInteger() (*big.Int, error) {
bi := emit.BytesToInt(i.value) if len(i.value) > MaxBigIntegerSizeBits/8 {
if bi.BitLen() > MaxBigIntegerSizeBits {
return nil, errors.New("integer is too big") return nil, errors.New("integer is too big")
} }
return bi, nil return emit.BytesToInt(i.value), nil
} }
// Equals implements StackItem interface. // Equals implements StackItem interface.