fixed potential vulnerability with bootstrapping blocks

1 files changed, 7 insertions, 4 deletions

diff --git a/plugin/evm/block.go b/plugin/evm/block.go
index 375dc6d..5c30fe1 100644
--- a/plugin/evm/block.go
+++ b/plugin/evm/block.go
@@ -74,10 +74,13 @@ func (b *Block) Parent() snowman.Block {
 
 // Verify implements the snowman.Block interface
 func (b *Block) Verify() error {
-	// Ensure the minimum gas price is paid for every transaction
-	for _, tx := range b.ethBlock.Transactions() {
-		if tx.GasPrice().Cmp(minGasPrice) < 0 {
-			return errInvalidBlock
+	// Only enforce a minimum fee when bootstrapping has finished
+	if b.vm.ctx.IsBootstrapped() {
+		// Ensure the minimum gas price is paid for every transaction
+		for _, tx := range b.ethBlock.Transactions() {
+			if tx.GasPrice().Cmp(minGasPrice) < 0 {
+				return errInvalidBlock
+			}
 		}
 	}