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psbt: check output index is within bounds before accessing

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This commit is contained in:
Andrew Chow
2019-10-15 17:26:46 -04:00
parent f1ef7f0aa4
commit deaa6dd144
5 changed files with 29 additions and 1 deletions
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4
src/node/psbt.cpp
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@@ -39,6 +39,10 @@ PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
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;