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Merge pull request #7117

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5dee031b2 protocol: add a sanity check to the number of block hashes sent (moneromooo-monero)
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Alexander Blair 2020-12-10 17:43:41 -08:00
commit bdaadf85dc
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2 changed files with 2 additions and 1 deletions
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1
src/cryptonote_config.h
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@ -93,6 +93,7 @@
#define BLOCKS_IDS_SYNCHRONIZING_DEFAULT_COUNT 10000 //by default, blocks ids count in synchronizing
#define BLOCKS_IDS_SYNCHRONIZING_MAX_COUNT 25000 //max blocks ids count in synchronizing
#define BLOCKS_SYNCHRONIZING_DEFAULT_COUNT_PRE_V4 100 //by default, blocks count in blocks downloading
#define BLOCKS_SYNCHRONIZING_DEFAULT_COUNT 20 //by default, blocks count in blocks downloading
#define BLOCKS_SYNCHRONIZING_MAX_COUNT 2048 //must be a power of 2, greater than 128, equal to SEEDHASH_EPOCH_BLOCKS

2
src/cryptonote_protocol/cryptonote_protocol_handler.inl
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@ -2505,7 +2505,7 @@ skip:
}
MDEBUG(context << "first block hash " << arg.m_block_ids.front() << ", last " << arg.m_block_ids.back());
if (arg.total_height >= CRYPTONOTE_MAX_BLOCK_NUMBER || arg.m_block_ids.size() >= CRYPTONOTE_MAX_BLOCK_NUMBER)
if (arg.total_height >= CRYPTONOTE_MAX_BLOCK_NUMBER || arg.m_block_ids.size() > BLOCKS_IDS_SYNCHRONIZING_MAX_COUNT)
{
LOG_ERROR_CCONTEXT("sent wrong NOTIFY_RESPONSE_CHAIN_ENTRY, with total_height=" << arg.total_height << " and block_ids=" << arg.m_block_ids.size());
drop_connection(context, false, false);