Parallax is vulnerable to DoS via malicious p2p message
A vulnerable node can be made to consume very large amounts of memory when handling specially crafted p2p messages sent from an attacker node. In order to carry out the attack, the attacker establishes a peer connections to the victim, and sends a malicious GetBlockHeadersRequest message with a count of 0, using the Parallax protocol. In descendants := chain.GetHeadersFrom(num+count-1, count-1), the value of count-1 is passed to the function GetHeadersFrom(number, …