According to the press release, Bitcoin Core V 0.16.3 was delivered with a fix for a denial-of-service [DoS] vulnerability. This vulnerability was expected reportedly to cause a crash of older versions of Bitcoin Core if they tried processed a block dealings that tries to pay identical amounts twice. As per the release, such blocks are often solely created by a miner since they’re invalid. So as to form such block, a miner would be needed to burn a block of at least 12.5 Bitcoin [BTC] worth around $80k as per the press reporting time.
The new update includes a feature that eliminates a possible crash by enabling the software package to “quietly reject” invalid blocks created by miners.
An associate professor of computer science at Cornell University named ‘Emin Gün Sirer’, told that the whole network may crash for fewer money than “a heap of entities would pay for a 0-day attack on several systems.” Emin aforesaid that there are several “motivated people” that would have taken this chance to bring the network down.
According to Casaba Security co-founder ‘Jason Glassberg,’ the recent vulnerability found on Bitcoin Core package may “take down the entire network.” He explained that the network crash “does not appear” to focus on users’ wallets, however would rather “affect transactions within the sense that they can’t be completed,”
Even Cobra Bitcoin, co-owner of Bitcoin.org, aforesaid the recent issue in Bitcoin Core was a “very shuddery bug” that would have affected a “huge chunk of the Bitcoin network.”