Recently Discovered Bitcoin Vulnerability Is Even Worse Than Previously Thought

Siamak Masnavi

On Monday (17 September 2018), a vulnerability (known as CVE-2018-17144) in Bitcoin Core (Bitcoin's reference implementation), which had existed since version 0.14.0 of Bitcoin Core (released on 8 March 2017), was reported to developers working on Bitcoin Core as well as some projects supporting other cryptocurrencies that use this code (such as "Bitcoin ABC" and "Bitcoin Unlimited", the two leading full node implementations of the Bitcoin Cash protocol). This vulnerability was reported anonymously as a "Denial of Service" (DoS) bug. 

As covered by CryptoGlobe, Bitcoin Core developers came up with a fix for this bug the next day (18 September 2018), and released it as part of Bitcoin Core versions 0.16.3 and 0.17.0rc4. They urged anyone running vulnerable versions of Bitcoin Core (i.e. 0.14.0 up to and including 0.16.2) to upgrade to version 0.16.3 as soon as possible.

However, shortly after fixing the vulnerability, the Bitcoin Core developers discovered that the bug in the code causing the DoS problem was even more serious than previously thought because it also created a second problem: the same vulnerability could be exploited to inflate the Bitcoin supply (i.e. create new bitcoins, beyond the 21 million limit placed by Satoshi, which would have the effect of devaluing existing bitcoins). 

This meant that the code fix for the DoS bug would also take care of the supply inflation bug. But, probably in order not to cause panic, and to encourage quick upgrades, the developers decided to only disclose the DoS bug.

On September 20th, after a post in a public forum revealed the full impact of the vulnerability, the Bitcoin Core Developers decide to come clean and publish a full disclosure report for CVE-2018-17144.

Over half of the Bitcoin hashrate has upgraded to patched nodes (running version 0.16.3). The developers say that although they are "unaware of any attempts to exploit this vulnerability", it is still critical that "affected users upgrade and apply the latest patches to ensure no possibility of large reorganizations, mining of invalid blocks, or acceptance of invalid transactions occurs."

Featured Image Credit: Photo via "Crypto360" via Flickr.com; licensed via "CC BY 2.0"

BitFlyer Commemorated Bitcoin Pizza Day with Donation to Homeless Shelters

Michael LaVere
  • Crypto exchange BitFlyer commemorated Bitcoin's Pizza Day by donating pies to local homeless shelters.
  • In 2010, computer programmer Laszlo Hanyecz paid 10,000 BTC for two pizzas. 

Cryptocurrency exchange BitFlyer commemorated the infamous Bitcoin Pizza Day by donating pies to a number of homeless shelter organizations. 

In 2010, one year after bitcoin’s initial launch, Bitcointalk.org forum user and programmer Laszlo Hanyecz became recognized as the first person to pay for goods with the cryptocurrency. In a moment that has since been immortalized, Hanyecz paid another forum user 10,000 BTC to have two Papa John’s pizzas delivered to him.

The bitcoin, valued around $41 in 2010, would be worth more than $92 million at today’s prices. 

Cryptocurrency exchange BitFlyer commemorated the ten-year anniversary of the event by ordering pizzas for local homeless shelters. 

BitFlyer chief operating officer Joel Edgerton told Cointelegraph the exchange had coordinated the event with shelter managers. 

He said, 

We ordered the pizzas ourselves from a local chain and delivered them to the homeless shelters. We worked closely with the managers of the shelters to ensure they get the appropriate amount and get there on time.

Featured Image Credit: Photo via Pixabay.com