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Bitcoin Core

‘Very Scary’: Bitcoin Core Developers Confirm Duplicate Transaction Bug Fix

Wilma Woo
by Wilma Woo
6 years ago
·
Posted in Bitcoin Technology, Bitcoin, Bitcoin core, Bitcoin Security, News, News teaser
Trusted Editorial content, reviewed by leading industry experts and seasoned editors. Ad Disclosure

Bitcoin developers released a new version of the Bitcoin Core client September 18 after fixing a “very scary” bug which could have seen a malicious party take many nodes offline.


Upgrade ‘As Soon As Possible’

In release notes for Bitcoin Core version 0.16.3, Wladimir van der Laan confirmed the vulnerability, known as CVE-2018-17144, had received an effective patch. The Bitcoin Core client remains the most popular comprising over 94% of all Bitcoin software implementations today. 

“A denial-of-service vulnerability… exploitable by miners has been discovered in Bitcoin Core versions 0.14.0 up to 0.16.2,” he summarized.

“It is recommended to upgrade any of the vulnerable versions to 0.16.3 as soon as possible.”

CVE-2018-17144 could technically have allowed a malicious miner or group of miners to perform duplicate transactions and burn block rewards, forcing nodes off the network in the process.

Cobra, the creator of information resource Bitcoin.org, said the bug even had the potential to create chaos in a “huge chunk” of the ecosystem.

“A very scary bug in Bitcoin Core has just been fixed which could have crashed a huge chunk of the Bitcoin network if exploited by any rogue miners,” he wrote on Twitter.

A very scary bug in Bitcoin Core has just been fixed which could have crashed a huge chunk of the Bitcoin network if exploited by any rogue miners. https://t.co/fMrgRiDaTP

— Cøbra (@CobraBitcoin) September 18, 2018

Bug’s Origin Remains Murky

Other than the official release notes, developers have yet to publicly explain the origin and circumstances around the offending code. On Github, fellow Core developer Andrew Chow remained brief, telling users only that a “third party” reported the bug.

“The bug was disclosed to other projects simultaneously to it being disclosed to us,” Matt Corallo added.

Bitcoin Core bugs rarely create a sense of urgency within the community, making the discovery of CVE-2018-17144 an unusual exception.

As Bitcoinist reported, however, code problems regularly afflict the cryptocurrency’s spin-offs, with Bitcoin Cash frequently coming under suspicion over the strength of its infrastructure.

An ongoing attempt to ‘test’ the network from an entity known as BitPico continues.

What do you think about the Bitcoin Core bug? Let us know in the comments below!


Images courtesy of Shutterstock, Twitter

Editorial Process for bitcoinist is centered on delivering thoroughly researched, accurate, and unbiased content. We uphold strict sourcing standards, and each page undergoes diligent review by our team of top technology experts and seasoned editors. This process ensures the integrity, relevance, and value of our content for our readers.
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