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authormoneromooo-monero <moneromooo-monero@users.noreply.github.com>2020-12-10 19:26:12 +0000
committermoneromooo-monero <moneromooo-monero@users.noreply.github.com>2020-12-10 19:26:12 +0000
commit5dee031b25dca38d655a024cdc706e463d90e786 (patch)
treea76d82bf8d14a517f133c889cf9aa9d6fb4d6795
parentMerge pull request #7072 (diff)
downloadmonero-5dee031b25dca38d655a024cdc706e463d90e786.tar.xz
protocol: add a sanity check to the number of block hashes sent
-rw-r--r--src/cryptonote_config.h1
-rw-r--r--src/cryptonote_protocol/cryptonote_protocol_handler.inl2
2 files changed, 2 insertions, 1 deletions
diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h
index 13f0c471b..21f2bf81e 100644
--- a/src/cryptonote_config.h
+++ b/src/cryptonote_config.h
@@ -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
diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.inl b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
index 25b14d903..e6fe65ab2 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@@ -2500,7 +2500,7 @@ 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);