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452d182739
0c62e3aa73839e97e65a3155e06a98d84b700a1e New regression testing for CVE-2018-17144, CVE-2012-2459, and CVE-2010-5137. (lucash-dev)
38bfca6bb2ad68719415e9c54a981441052da072 Added comments referencing multiple CVEs in tests and production code. (lucash-dev)
Pull request description:
This functional test includes two scenarios that test for regressions of vulnerabilities, but they are only briefly described. There are freely available documents explaining in detail the issues, but without explicit mentions, the developer trying to maintain the code needs an additional step of digging in commit history and PR conversations to figure it out.
Added comments to explicitly mention CVE-2018-17144 and CVE-2012-2459, for more complete documentation.
This improves developer experience by making understanding the tests easier.
ACKs for top commit:
laanwj:
ACK 0c62e3aa73839e97e65a3155e06a98d84b700a1e, checked the CVE numbers, thanks for adding documentation
Tree-SHA512: 3ee05351745193b8b959e4a25d50f25a693b2d24b0732ed53cf7d5882df40b5dd0f1877bd5c69cffb921d4a7acf9deb3cc1160b96dc730d9b5984151ad06b7c9
323 lines
15 KiB
Python
Executable File
323 lines
15 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2017 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test mempool acceptance of raw transactions."""
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from io import BytesIO
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import math
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.messages import (
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BIP125_SEQUENCE_NUMBER,
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COIN,
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COutPoint,
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CTransaction,
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CTxOut,
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MAX_BLOCK_SIZE,
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)
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from test_framework.script import (
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hash160,
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CScript,
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OP_0,
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OP_EQUAL,
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OP_HASH160,
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OP_RETURN,
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)
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from test_framework.util import (
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assert_equal,
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assert_raises_rpc_error,
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hex_str_to_bytes,
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wait_until,
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)
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class MempoolAcceptanceTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.extra_args = [[
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'-txindex',
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'-reindex', # Need reindex for txindex
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'-acceptnonstdtxn=0', # Try to mimic main-net
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]] * self.num_nodes
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def check_mempool_result(self, result_expected, *args, **kwargs):
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"""Wrapper to check result of testmempoolaccept on node_0's mempool"""
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result_test = self.nodes[0].testmempoolaccept(*args, **kwargs)
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assert_equal(result_expected, result_test)
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assert_equal(self.nodes[0].getmempoolinfo()['size'], self.mempool_size) # Must not change mempool state
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def run_test(self):
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node = self.nodes[0]
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self.log.info('Start with empty mempool, and 200 blocks')
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self.mempool_size = 0
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wait_until(lambda: node.getblockcount() == 200)
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assert_equal(node.getmempoolinfo()['size'], self.mempool_size)
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coins = node.listunspent()
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self.log.info('Should not accept garbage to testmempoolaccept')
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assert_raises_rpc_error(-3, 'Expected type array, got string', lambda: node.testmempoolaccept(rawtxs='ff00baar'))
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assert_raises_rpc_error(-8, 'Array must contain exactly one raw transaction for now', lambda: node.testmempoolaccept(rawtxs=['ff00baar', 'ff22']))
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assert_raises_rpc_error(-22, 'TX decode failed', lambda: node.testmempoolaccept(rawtxs=['ff00baar']))
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self.log.info('A transaction already in the blockchain')
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coin = coins.pop() # Pick a random coin(base) to spend
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raw_tx_in_block = node.signrawtransactionwithwallet(node.createrawtransaction(
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inputs=[{'txid': coin['txid'], 'vout': coin['vout']}],
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outputs=[{node.getnewaddress(): 0.3}, {node.getnewaddress(): 49}],
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))['hex']
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txid_in_block = node.sendrawtransaction(hexstring=raw_tx_in_block, maxfeerate=0)
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node.generate(1)
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self.mempool_size = 0
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self.check_mempool_result(
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result_expected=[{'txid': txid_in_block, 'allowed': False, 'reject-reason': '18: txn-already-known'}],
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rawtxs=[raw_tx_in_block],
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)
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self.log.info('A transaction not in the mempool')
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fee = 0.00000700
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raw_tx_0 = node.signrawtransactionwithwallet(node.createrawtransaction(
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inputs=[{"txid": txid_in_block, "vout": 0, "sequence": BIP125_SEQUENCE_NUMBER}], # RBF is used later
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outputs=[{node.getnewaddress(): 0.3 - fee}],
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))['hex']
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tx = CTransaction()
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0)))
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txid_0 = tx.rehash()
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self.check_mempool_result(
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result_expected=[{'txid': txid_0, 'allowed': True}],
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rawtxs=[raw_tx_0],
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)
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self.log.info('A final transaction not in the mempool')
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coin = coins.pop() # Pick a random coin(base) to spend
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raw_tx_final = node.signrawtransactionwithwallet(node.createrawtransaction(
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inputs=[{'txid': coin['txid'], 'vout': coin['vout'], "sequence": 0xffffffff}], # SEQUENCE_FINAL
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outputs=[{node.getnewaddress(): 0.025}],
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locktime=node.getblockcount() + 2000, # Can be anything
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))['hex']
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_final)))
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': True}],
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rawtxs=[tx.serialize().hex()],
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maxfeerate=0,
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)
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node.sendrawtransaction(hexstring=raw_tx_final, maxfeerate=0)
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self.mempool_size += 1
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self.log.info('A transaction in the mempool')
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node.sendrawtransaction(hexstring=raw_tx_0)
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self.mempool_size += 1
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self.check_mempool_result(
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result_expected=[{'txid': txid_0, 'allowed': False, 'reject-reason': '18: txn-already-in-mempool'}],
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rawtxs=[raw_tx_0],
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)
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self.log.info('A transaction that replaces a mempool transaction')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0)))
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tx.vout[0].nValue -= int(fee * COIN) # Double the fee
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tx.vin[0].nSequence = BIP125_SEQUENCE_NUMBER + 1 # Now, opt out of RBF
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raw_tx_0_reject = node.signrawtransactionwithwallet(tx.serialize().hex())['hex']
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0_reject)))
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txid_0_reject = tx.rehash()
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self.check_mempool_result(
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# No RBF in DASH
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result_expected=[{'txid': txid_0_reject, 'allowed': False, 'reject-reason': '18: txn-mempool-conflict'}],
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rawtxs=[raw_tx_0_reject],
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)
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self.log.info('A transaction that conflicts with an unconfirmed tx')
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# Send the transaction that replaces the mempool transaction and opts out of replaceability
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# node.sendrawtransaction(hexstring=tx.serialize().hex(), maxfeerate=0)
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# take original raw_tx_0
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0)))
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tx.vout[0].nValue -= int(4 * fee * COIN) # Set more fee
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# skip re-signing the tx
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '18: txn-mempool-conflict'}],
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rawtxs=[tx.serialize().hex()],
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maxfeerate=0,
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)
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self.log.info('A transaction with missing inputs, that never existed')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0)))
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tx.vin[0].prevout = COutPoint(hash=int('ff' * 32, 16), n=14)
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# skip re-signing the tx
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': 'missing-inputs'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction with missing inputs, that existed once in the past')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_0)))
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tx.vin[0].prevout.n = 1 # Set vout to 1, to spend the other outpoint (49 coins) of the in-chain-tx we want to double spend
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raw_tx_1 = node.signrawtransactionwithwallet(tx.serialize().hex())['hex']
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txid_1 = node.sendrawtransaction(hexstring=raw_tx_1, maxfeerate=0)
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# Now spend both to "clearly hide" the outputs, ie. remove the coins from the utxo set by spending them
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raw_tx_spend_both = node.signrawtransactionwithwallet(node.createrawtransaction(
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inputs=[
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{'txid': txid_0, 'vout': 0},
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{'txid': txid_1, 'vout': 0},
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],
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outputs=[{node.getnewaddress(): 0.1}]
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))['hex']
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txid_spend_both = node.sendrawtransaction(hexstring=raw_tx_spend_both, maxfeerate=0)
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node.generate(1)
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self.mempool_size = 0
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# Now see if we can add the coins back to the utxo set by sending the exact txs again
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self.check_mempool_result(
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result_expected=[{'txid': txid_0, 'allowed': False, 'reject-reason': 'missing-inputs'}],
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rawtxs=[raw_tx_0],
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)
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self.check_mempool_result(
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result_expected=[{'txid': txid_1, 'allowed': False, 'reject-reason': 'missing-inputs'}],
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rawtxs=[raw_tx_1],
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)
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self.log.info('Create a signed "reference" tx for later use')
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raw_tx_reference = node.signrawtransactionwithwallet(node.createrawtransaction(
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inputs=[{'txid': txid_spend_both, 'vout': 0}],
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outputs=[{node.getnewaddress(): 0.05}],
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))['hex']
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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# Reference tx should be valid on itself
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': True}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction with no outputs')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout = []
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# Skip re-signing the transaction for context independent checks from now on
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# tx.deserialize(BytesIO(hex_str_to_bytes(node.signrawtransactionwithwallet(tx.serialize().hex())['hex'])))
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-vout-empty'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A really large transaction')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin = [tx.vin[0]] * math.ceil(MAX_BLOCK_SIZE / len(tx.vin[0].serialize()))
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-oversize'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction with negative output value')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout[0].nValue *= -1
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-vout-negative'}],
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rawtxs=[tx.serialize().hex()],
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)
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# The following two validations prevent overflow of the output amounts (see CVE-2010-5139).
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self.log.info('A transaction with too large output value')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout[0].nValue = 21000000 * COIN + 1
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-vout-toolarge'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction with too large sum of output values')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout = [tx.vout[0]] * 2
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tx.vout[0].nValue = 21000000 * COIN
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-txouttotal-toolarge'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction with duplicate inputs')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin = [tx.vin[0]] * 2
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: bad-txns-inputs-duplicate'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A coinbase transaction')
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# Pick the input of the first tx we signed, so it has to be a coinbase tx
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raw_tx_coinbase_spent = node.getrawtransaction(txid=node.decoderawtransaction(hexstring=raw_tx_in_block)['vin'][0]['txid'])
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_coinbase_spent)))
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '16: coinbase'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('Some nonstandard transactions')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.nVersion = 4 # A version currently non-standard
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: version'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout[0].scriptPubKey = CScript([OP_0]) # Some non-standard script
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: scriptpubkey'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin[0].scriptSig = CScript([OP_HASH160]) # Some not-pushonly scriptSig
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: scriptsig-not-pushonly'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin[0].scriptSig = CScript([b'a' * 1648]) # Some too large scriptSig (>1650 bytes)
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: scriptsig-size'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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output_p2sh_burn = CTxOut(nValue=540, scriptPubKey=CScript([OP_HASH160, hash160(b'burn'), OP_EQUAL]))
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num_scripts = 100000 // len(output_p2sh_burn.serialize()) # Use enough outputs to make the tx too large for our policy
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tx.vout = [output_p2sh_burn] * num_scripts
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: tx-size'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout[0] = output_p2sh_burn
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tx.vout[0].nValue -= 1 # Make output smaller, such that it is dust for our policy
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: dust'}],
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rawtxs=[tx.serialize().hex()],
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)
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vout[0].scriptPubKey = CScript([OP_RETURN, b'\xff'])
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tx.vout = [tx.vout[0]] * 2
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: multi-op-return'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A timelocked transaction')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin[0].nSequence -= 1 # Should be non-max, so locktime is not ignored
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tx.nLockTime = node.getblockcount() + 1
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: non-final'}],
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rawtxs=[tx.serialize().hex()],
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)
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self.log.info('A transaction that is locked by BIP68 sequence logic')
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tx.deserialize(BytesIO(hex_str_to_bytes(raw_tx_reference)))
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tx.vin[0].nSequence = 2 # We could include it in the second block mined from now, but not the very next one
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# Can skip re-signing the tx because of early rejection
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self.check_mempool_result(
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result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': '64: non-BIP68-final'}],
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rawtxs=[tx.serialize().hex()],
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maxfeerate=0,
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)
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if __name__ == '__main__':
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MempoolAcceptanceTest().main()
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