From f136ad6a8ecaa19ba2e1298f69bc8289e8f5a653 Mon Sep 17 00:00:00 2001
From: CJentzsch <jentzsch.software@gmail.com>
Date: Thu, 22 Jan 2015 20:15:32 +0100
Subject: [PATCH] a transaction RLP with more fiels than 9 is invalid according
 to yellow paper

---
 libethereum/Transaction.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libethereum/Transaction.cpp b/libethereum/Transaction.cpp
index 78abd6267..345e379af 100644
--- a/libethereum/Transaction.cpp
+++ b/libethereum/Transaction.cpp
@@ -46,6 +46,10 @@ Transaction::Transaction(bytesConstRef _rlpData, CheckSignature _checkSig)
 		byte v = rlp[field = 6].toInt<byte>() - 27;
 		h256 r = rlp[field = 7].toInt<u256>();
 		h256 s = rlp[field = 8].toInt<u256>();
+
+		if (rlp.itemCount() > 9)
+			BOOST_THROW_EXCEPTION(BadRLP() << errinfo_comment("to many fields in the transaction RLP"));
+
 		m_vrs = SignatureStruct{ r, s, v };
 		if (_checkSig >= CheckSignature::Range && !m_vrs.isValid())
 			BOOST_THROW_EXCEPTION(InvalidSignature());