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-rw-r--r--src/net.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/net.cpp b/src/net.cpp
index 4d7c181330..60059249ed 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -2213,6 +2213,7 @@ void CConnman::OpenNetworkConnection(const CAddress& addrConnect, bool fCountFai
void CConnman::ThreadMessageHandler()
{
+ FastRandomContext rng;
while (!flagInterruptMsgProc)
{
std::vector<CNode*> vNodesCopy;
@@ -2226,6 +2227,11 @@ void CConnman::ThreadMessageHandler()
bool fMoreWork = false;
+ // Randomize the order in which we process messages from/to our peers.
+ // This prevents attacks in which an attacker exploits having multiple
+ // consecutive connections in the vNodes list.
+ Shuffle(vNodesCopy.begin(), vNodesCopy.end(), rng);
+
for (CNode* pnode : vNodesCopy)
{
if (pnode->fDisconnect)