diff --git a/src/node/psbt.cpp b/src/node/psbt.cpp index 9a30c3f08..ff7a38e40 100644 --- a/src/node/psbt.cpp +++ b/src/node/psbt.cpp @@ -2,6 +2,7 @@ // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. +#include #include #include #include @@ -31,9 +32,17 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx) // Check for a UTXO CTxOut utxo; if (psbtx.GetInputUTXO(utxo, i)) { + if (!MoneyRange(utxo.nValue) || !MoneyRange(in_amt + utxo.nValue)) { + result.SetInvalid(strprintf("PSBT is not valid. Input %u has invalid value", i)); + return result; + } in_amt += utxo.nValue; input_analysis.has_utxo = true; } else { + if (input.non_witness_utxo && psbtx.tx->vin[i].prevout.n >= input.non_witness_utxo->vout.size()) { + result.SetInvalid(strprintf("PSBT is not valid. Input %u specifies invalid prevout", i)); + return result; + } input_analysis.has_utxo = false; input_analysis.is_final = false; input_analysis.next = PSBTRole::UPDATER; @@ -85,9 +94,16 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx) // Get the output amount CAmount out_amt = std::accumulate(psbtx.tx->vout.begin(), psbtx.tx->vout.end(), CAmount(0), [](CAmount a, const CTxOut& b) { + if (!MoneyRange(a) || !MoneyRange(b.nValue) || !MoneyRange(a + b.nValue)) { + return CAmount(-1); + } return a += b.nValue; } ); + if (!MoneyRange(out_amt)) { + result.SetInvalid(strprintf("PSBT is not valid. Output amount invalid")); + return result; + } // Get the fee CAmount fee = in_amt - out_amt; diff --git a/src/psbt.cpp b/src/psbt.cpp index 20473429a..76783e968 100644 --- a/src/psbt.cpp +++ b/src/psbt.cpp @@ -67,8 +67,11 @@ bool PartiallySignedTransaction::AddOutput(const CTxOut& txout, const PSBTOutput bool PartiallySignedTransaction::GetInputUTXO(CTxOut& utxo, int input_index) const { PSBTInput input = inputs[input_index]; - int prevout_index = tx->vin[input_index].prevout.n; + uint32_t prevout_index = tx->vin[input_index].prevout.n; if (input.non_witness_utxo) { + if (prevout_index >= input.non_witness_utxo->vout.size()) { + return false; + } utxo = input.non_witness_utxo->vout[prevout_index]; } else if (!input.witness_utxo.IsNull()) { utxo = input.witness_utxo; @@ -256,6 +259,9 @@ bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& if (input.non_witness_utxo) { // If we're taking our information from a non-witness UTXO, verify that it matches the prevout. COutPoint prevout = tx.vin[index].prevout; + if (prevout.n >= input.non_witness_utxo->vout.size()) { + return false; + } if (input.non_witness_utxo->GetHash() != prevout.hash) { return false; } diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp index 2fd6b9709..3b202d653 100644 --- a/src/rpc/rawtransaction.cpp +++ b/src/rpc/rawtransaction.cpp @@ -1074,7 +1074,12 @@ UniValue decodepsbt(const JSONRPCRequest& request) UniValue out(UniValue::VOBJ); out.pushKV("amount", ValueFromAmount(txout.nValue)); - total_in += txout.nValue; + if (MoneyRange(txout.nValue) && MoneyRange(total_in + txout.nValue)) { + total_in += txout.nValue; + } else { + // Hack to just not show fee later + have_all_utxos = false; + } UniValue o(UniValue::VOBJ); ScriptToUniv(txout.scriptPubKey, o, true); @@ -1084,7 +1089,13 @@ UniValue decodepsbt(const JSONRPCRequest& request) UniValue non_wit(UniValue::VOBJ); TxToUniv(*input.non_witness_utxo, uint256(), non_wit, false); in.pushKV("non_witness_utxo", non_wit); - total_in += input.non_witness_utxo->vout[psbtx.tx->vin[i].prevout.n].nValue; + CAmount utxo_val = input.non_witness_utxo->vout[psbtx.tx->vin[i].prevout.n].nValue; + if (MoneyRange(utxo_val) && MoneyRange(total_in + utxo_val)) { + total_in += utxo_val; + } else { + // Hack to just not show fee later + have_all_utxos = false; + } } else { have_all_utxos = false; } @@ -1200,7 +1211,12 @@ UniValue decodepsbt(const JSONRPCRequest& request) outputs.push_back(out); // Fee calculation - output_value += psbtx.tx->vout[i].nValue; + if (MoneyRange(psbtx.tx->vout[i].nValue) && MoneyRange(output_value + psbtx.tx->vout[i].nValue)) { + output_value += psbtx.tx->vout[i].nValue; + } else { + // Hack to just not show fee later + have_all_utxos = false; + } } result.pushKV("outputs", outputs); if (have_all_utxos) { diff --git a/src/wallet/psbtwallet.cpp b/src/wallet/psbtwallet.cpp index 721a244af..88740ef4a 100644 --- a/src/wallet/psbtwallet.cpp +++ b/src/wallet/psbtwallet.cpp @@ -39,6 +39,13 @@ TransactionError FillPSBT(const CWallet* pwallet, PartiallySignedTransaction& ps return TransactionError::SIGHASH_MISMATCH; } + // Backport of #17156 fix, without #17371 refactor + if (input.witness_utxo.IsNull() && input.non_witness_utxo) { + if (txin.prevout.n >= input.non_witness_utxo->vout.size()) { + return TransactionError::MISSING_INPUTS; + } + } + complete &= SignPSBTInput(HidingSigningProvider(pwallet, !sign, !bip32derivs), psbtx, i, sighash_type); } diff --git a/src/wallet/test/psbt_wallet_tests.cpp b/src/wallet/test/psbt_wallet_tests.cpp index 0400f1207..7a489d4ff 100644 --- a/src/wallet/test/psbt_wallet_tests.cpp +++ b/src/wallet/test/psbt_wallet_tests.cpp @@ -67,6 +67,14 @@ BOOST_AUTO_TEST_CASE(psbt_updater_test) ssTx << psbtx; std::string final_hex = HexStr(ssTx.begin(), ssTx.end()); BOOST_CHECK_EQUAL(final_hex, "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"); + + // Mutate the transaction so that one of the inputs is invalid + psbtx.tx->vin[0].prevout.n = 2; + + // Try to sign the mutated input + SignatureData sigdata; + psbtx.inputs[0].FillSignatureData(sigdata); + BOOST_CHECK(!SignPSBTInput(m_wallet, psbtx, 0, SIGHASH_ALL)); } BOOST_AUTO_TEST_CASE(parse_hd_keypath) diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py index 57333955b..2f214702b 100755 --- a/test/functional/rpc_psbt.py +++ b/test/functional/rpc_psbt.py @@ -421,5 +421,20 @@ class PSBTTest(BitcoinTestFramework): assert_equal(analysis['next'], 'creator') assert_equal(analysis['error'], 'PSBT is not valid. Input 0 spends unspendable output') + self.log.info("PSBT with invalid values should have error message and Creator as next") + analysis = self.nodes[0].analyzepsbt('cHNidP8BAHECAAAAAfA00BFgAm6tp86RowwH6BMImQNL5zXUcTT97XoLGz0BAAAAAAD/////AgD5ApUAAAAAFgAUKNw0x8HRctAgmvoevm4u1SbN7XL87QKVAAAAABYAFPck4gF7iL4NL4wtfRAKgQbghiTUAAAAAAABAR8AgIFq49AHABYAFJUDtxf2PHo641HEOBOAIvFMNTr2AAAA') + assert_equal(analysis['next'], 'creator') + assert_equal(analysis['error'], 'PSBT is not valid. Input 0 has invalid value') + + analysis = self.nodes[0].analyzepsbt('cHNidP8BAHECAAAAAfA00BFgAm6tp86RowwH6BMImQNL5zXUcTT97XoLGz0BAAAAAAD/////AgCAgWrj0AcAFgAUKNw0x8HRctAgmvoevm4u1SbN7XL87QKVAAAAABYAFPck4gF7iL4NL4wtfRAKgQbghiTUAAAAAAABAR8A8gUqAQAAABYAFJUDtxf2PHo641HEOBOAIvFMNTr2AAAA') + assert_equal(analysis['next'], 'creator') + assert_equal(analysis['error'], 'PSBT is not valid. Output amount invalid') + + analysis = self.nodes[0].analyzepsbt('cHNidP8BAJoCAAAAAkvEW8NnDtdNtDpsmze+Ht2LH35IJcKv00jKAlUs21RrAwAAAAD/////S8Rbw2cO1020OmybN74e3Ysffkglwq/TSMoCVSzbVGsBAAAAAP7///8CwLYClQAAAAAWABSNJKzjaUb3uOxixsvh1GGE3fW7zQD5ApUAAAAAFgAUKNw0x8HRctAgmvoevm4u1SbN7XIAAAAAAAEAnQIAAAACczMa321tVHuN4GKWKRncycI22aX3uXgwSFUKM2orjRsBAAAAAP7///9zMxrfbW1Ue43gYpYpGdzJwjbZpfe5eDBIVQozaiuNGwAAAAAA/v///wIA+QKVAAAAABl2qRT9zXUVA8Ls5iVqynLHe5/vSe1XyYisQM0ClQAAAAAWABRmWQUcjSjghQ8/uH4Bn/zkakwLtAAAAAAAAQEfQM0ClQAAAAAWABRmWQUcjSjghQ8/uH4Bn/zkakwLtAAAAA==') + assert_equal(analysis['next'], 'creator') + assert_equal(analysis['error'], 'PSBT is not valid. Input 0 specifies invalid prevout') + + assert_raises_rpc_error(-25, 'Missing inputs', self.nodes[0].walletprocesspsbt, 'cHNidP8BAJoCAAAAAkvEW8NnDtdNtDpsmze+Ht2LH35IJcKv00jKAlUs21RrAwAAAAD/////S8Rbw2cO1020OmybN74e3Ysffkglwq/TSMoCVSzbVGsBAAAAAP7///8CwLYClQAAAAAWABSNJKzjaUb3uOxixsvh1GGE3fW7zQD5ApUAAAAAFgAUKNw0x8HRctAgmvoevm4u1SbN7XIAAAAAAAEAnQIAAAACczMa321tVHuN4GKWKRncycI22aX3uXgwSFUKM2orjRsBAAAAAP7///9zMxrfbW1Ue43gYpYpGdzJwjbZpfe5eDBIVQozaiuNGwAAAAAA/v///wIA+QKVAAAAABl2qRT9zXUVA8Ls5iVqynLHe5/vSe1XyYisQM0ClQAAAAAWABRmWQUcjSjghQ8/uH4Bn/zkakwLtAAAAAAAAQEfQM0ClQAAAAAWABRmWQUcjSjghQ8/uH4Bn/zkakwLtAAAAA==') + if __name__ == '__main__': PSBTTest().main()