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stricter tx deserialization: forbid negative output amount values

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SomberNight
2018-06-12 14:41:30 +02:00
parent 0b78cb5e6b
commit 12c5474cf1
1 changed files with 2 additions and 0 deletions
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2
lib/transaction.py
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@@ -536,6 +536,8 @@ def parse_output(vds, i):
d['value'] = vds.read_int64() d['value'] = vds.read_int64()
if d['value'] > TOTAL_COIN_SUPPLY_LIMIT_IN_BTC * COIN: if d['value'] > TOTAL_COIN_SUPPLY_LIMIT_IN_BTC * COIN:
raise SerializationError('invalid output amount (too large)') raise SerializationError('invalid output amount (too large)')
if d['value'] < 0:
raise SerializationError('invalid output amount (negative)')
scriptPubKey = vds.read_bytes(vds.read_compact_size()) scriptPubKey = vds.read_bytes(vds.read_compact_size())
d['type'], d['address'] = get_address_from_output_script(scriptPubKey) d['type'], d['address'] = get_address_from_output_script(scriptPubKey)
d['scriptPubKey'] = bh2u(scriptPubKey) d['scriptPubKey'] = bh2u(scriptPubKey)