electrum

commit 12c5474cf126f8bcb01a5cf90b582189f1297cb0
parent 0b78cb5e6bd4242c6fb773413a2ce62af9a03ae3
Author: SomberNight <somber.night@protonmail.com>
Date:   Tue, 12 Jun 2018 14:41:30 +0200

stricter tx deserialization: forbid negative output amount values

Diffstat:
M
lib/transaction.py
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/lib/transaction.py b/lib/transaction.py
@@ -536,6 +536,8 @@ def parse_output(vds, i):
     d['value'] = vds.read_int64()
     if d['value'] > TOTAL_COIN_SUPPLY_LIMIT_IN_BTC * COIN:
         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())
     d['type'], d['address'] = get_address_from_output_script(scriptPubKey)
     d['scriptPubKey'] = bh2u(scriptPubKey)