Add range check on height extracted from coinbase script

5 years ago · 722118ade9
1 changed files with 3 additions and 0 deletions
--- a/parser/block.go
+++ b/parser/block.go
@ -70,6 +70,9 @@ func (b *block) GetHeight() int {
 		return -1
 	}
 	// uint32 should last us a while (Nov 2018)
+	if heightNum > int64(^uint32(0)) {
+		return -1
+	}
 	blockHeight := uint32(heightNum)

 	if blockHeight == genesisTargetDifficulty {