Ravencoin falls 19% as consensus flaw splits network

Ravencoin disclosed on Aug. 11 that a critical consensus vulnerability had been exploited since Aug. 7, allowing vulnerable nodes to accept invalid blocks beginning at height 4,487,776. Summary Ravencoin said invalid blocks began at height 4,487,776 after a critical consensus vulnerability was exploited. 2Miners released an emergency patch rejecting forged blocks and advised every network operator to upgrade. Transactions confirmed after block 4,487,775 remain at risk if the recovery chain becomes dominant eventually. Upbit suspended RVN deposits and withdrawals after citing a network issue affecting Ravencoin on Monday. RVN fell 19.1% to about $0.00288 as traders reacted to the network security incident Tuesday. The project warned in its notice that a recovery chain being mined by 2Miners and RavenMiner could trigger a deep reorganization spanning “approximately three days” if it becomes dominant. The alert followed an emergency software release from 2Miners on Aug. 10. The pool said the flaw sits in KAWPOW block header validation and allows an attacker to bypass the normal memory intensive mining process. Ravencoin advised exchanges to halt RVN deposits and withdrawals and told u...