#Bitcoin 0.21.0

[cryptocurrencyaustralia]

Disclosure of netsplit due to malicious P2P messages by first 200 peers (≤ version 0.20.1)

Disclosure of the details of an integer overflow bug which risked causing a network split, a fix for which was released on January 15th, 2021 in Bitcoin Core version 0.21.0. This issue is considered Medium severity. Technical details A network split vulnerability resulted from two separate bugs in the processing code of version messages: * Signed-integer overflow when calculating the time offset for newly connecting peers. * abs64 logic bug (abs64(std::numeric_limits::min()) == std::numeric_limits::min()), resulting in a bypass of the maximum time adjustment limit. The two bugs allow an attacker to force a victims adjusted time (system time + network time offset) to be skewed such that any new blocks are rejected for having a timestamp that is dated too far in the future. It should be noted that this attack assumes the attacker is among the first 200 peers to connect to the victim, as only the time offsets from those initial connections are factored into adjusted time. Attribution Credit goes to practicalswift for discovering and providing the initial fix for the vulnerability, and Pieter Wuille for the fix as well as general cleanup to the at-risk code. Timeline * 2020-10-10 Initial report send to security@bitcoincore.org * 2020-10-13 Fix merged into Bitcoin Core (https://github.com/bitcoin/bitcoin/pull/20141) * 2021-01-15 v0.21.0 released * 2022-04-25 The last vulnerable Bitcoin Core version (0.20.x) goes EOL * 2024-07-03 Public disclosure http://dlvr.it/T96bjM

[btcmanager]

Bitcoin Upgrades, Preparing for a Private Future

Bitcoin Upgrades, Preparing for a Private Future

The Bitcoin Core 0.21.0 is now live as per an update on Jan 15. Setting a Secure and Private Foundation for Bitcoin The latest iteration of Bitcoin’s implementation introduces several changes setting the foundation for a more secure, private, and robust network. Following the release of 0.21.0, full node operators and miners now observe thatRead More

https://btcmanager.com/bitcoin-upgrades-privacy-future/?utm_source=Tumblr&utm_medium=socialpush&utm_campaign=SNAP

[thecryptoreport]

Taproot Merged Into Bitcoin Core Taproot, the highly-anticipated protocol upgrade designed to add smart contract flexibility and more transactional privacy to Bitcoin, has officially merged into Bitcoin Core.

[kroisosbitcoin]

How to Fix Bitcoin Core's Installation Error "This app has been blocked for your protection."

How to Fix Bitcoin Core’s Installation Error “This app has been blocked for your protection.”

When you try to download the Bitcoin Core to run a node, you get this error on Windows and it blocks you from installing. This app has been blocked for your protection.An administrator has blocked you from running this app. For more information, contact the administrator.bitcoin-0.21.0-win64-setup.exe The Bitcoin.org instructions are unhelpful, it just says that some Windows users have issues…

[elysiumcomp]

✅ S&P 500 снизился на 50 пунктов после представления Джо Байденом третьего пакета финансовой помощи на $1,9 трлн. Биткоин не смог повторно превысить цену в $40 000 в середине недели и снова пошел на коррекци��, в качестве текущей поддержки выступает $35 000 🤔 Недельный дайджест: 🔸 Палата представителей проголосовала за запуск процедуры импичмента Дональду Трампу и теперь делом должен заняться Сенат 🔸 С 15 января Минфин РФ возобновил ежедневные покупки валюты на 7,1 млрд руб. в рамках бюджетного правила 🔸 Состоялся релиз Bitcoin Core 0.21.0, в котором появился код обновлений Schnorr и Taproot 🔸 В ВОЗ исключили появление коллективного иммунитета к COVID в 2021 году 🦠 🔸 11 января PayPal установили собственный рекорд по торговле криптовалютой в размере $242 млн 🔸 СМИ: Павел Дуров отказался от продажи 5-10% акций Telegram при условии оценки мессенджера в $30 млрд 🔸 Криптофонд Grayscale Investments привлек в 4 квартале 2020 года рекордные $3,26 млрд 🔸 Платформа криптодеривативов Bakkt подтвердила выход на фондовую биржу во втором квартале 2021 года 🔸 Glassnode отмечают, что во время коррекции биткоина до $30 000 установлен рекорд криптокошельков с балансом выше 1 000 BTC 🐳 🔸 Пользователей WeChat напугали фейковым видео, в котором на Binance выставляют ордер на продажу сразу 21 млн биткоинов 🔸Минфин США выдал лицензию первого в стране криптобанка кастодиальному сервису Anchorage 🔸 В 2020 году экспорт в Китае вырос на 3,3% и составил рекордные $2,49 трлн Курсы: 🇪🇺 EUR/USD - 1,21 (↓0,58%) 🇷🇺 USD/RUB - 73,63 (↑0,56%) 📉 S&P 500 - 3 768 (↓0,72%) 🌐 Bitcoin - $35 966 (↓4,16%) 🌕 Золото - $1 827 (↓1,28%) ⚫️ Oil Brent - $54,82 (↓2,84%) (at Moscow, Russia) https://www.instagram.com/p/CKLTm_tLMqo/?igshid=1nkysdxibtgwn

[cryptocurrencyaustralia]

Disclosure of CPU/memory DoS due to many malicious peers (≤ version 0.20.0)

Bitcoin Core maintained an unlimited list of banned IP addresses and performed a quadratic operation on it. This could lead to an OOM crash and a CPU Dos. This issue is considered High severity. Details Bitcoin Core maintained a list of banned IP addresses. This list was not bounded and could be manipulated by an adversary. Adding new entries to this list was particularly cheap for an attacker when considering IPV6. In addition, when receiving a GETADDR message, Bitcoin Core would scan the entire ban list for every single address to be returned (up to 2500). Attribution Calin Culianu first responsibly disclosed it. Calin later publicly disclosed the bug in a PR comment. On the same day Jason Cox from Bitcoin ABC emailed the Bitcoin Core project to share this same report they also received. Timeline * 2020-06-08 Calin Culianu privately reports the bug to the Bitcoin Core project * 2020-06-08 Jason Cox privately shares the (same) report sent to Bitcoin ABC with Bitcoin Core * 2020-06-08 Calin Culianu publicly discloses the vulnerability on the original PR which introduced the quadratic behaviour * 2020-06-09 Pieter Wuille opens PR #19219 which fixes both the unbounded memory usage and the quadratic behaviour * 2020-06-16 Luke Dashjr gets assigned CVE-2020-14198 for this vulnerability after his request * 2020-07-07 Pieter’s PR is merged * 2020-08-01 Bitcoin Core 0.20.1 is released with the fix * 2021-01-14 Bitcoin Core 0.21.0 is released with the fix * 2022-04-25 The last vulnerable Bitcoin Core version (0.20.0) goes EOL * 2024-07-03 (Official) Public Disclosure http://dlvr.it/T96bj1

[btcmanager]

Bitcoin Core Version 0.22.0 is Now Live, Here's What it Includes

Bitcoin Core Version 0.22.0 is Now Live, Here's What it Includes

The Bitcoin development team has successfully launched version 22.0 of the open-source Bitcoin software. The latest version comes with a plethora of features, updated translations, bug fixes, and performance improvements. Bitcoin Core Version 22.0 Exactly eight months after rolling out version 0.21.0 of the Bitcoin Core open-source software, the ever-dedicated Bitcoin development team has releasedRead More

https://btcmanager.com/bitcoin-core-version-0-22-0-live-includes/?utm_source=Tumblr&utm_medium=socialpush&utm_campaign=SNAP

[thecryptoreport]

Discussing Bitcoin Core 0.21.0

Discussing Bitcoin Core 0.21.0

Listen To This Episode: In this episode of “The Van Wirdum Sjorsnado,” hosts Aaron van Wirdum and Sjors Provoost discussed the newly released Bitcoin Core 0.21.0. Bitcoin Core 0.21.0 is the 21st and latest major release of the Bitcoin Core software, the oldest and most important Bitcoin node implementation, which is often also regarded as the reference implementation for the Bitcoin…

[efecan26]

Bitcoin Core’un en yeni sürümü yayınlandı: Neler değişti?

Bitcoin Core’un en yeni sürümü yayınlandı: Neler değişti?

1 Aralık 2020’de çıkması plânlanan Bitcoin Core 0.21.0 sürümü rötarlı da olsa piyasaya çıktı. Yeni sürüm şu anda indirilebilir durumda ve birçok yenilik içeriyor. 0.21.0’deki en önemli değişimler olarak ise Tor’un en son adres formatının desteklenmesi, Taproot kodunun test için yayında olması ve manuel olarak ücret ayarlayabilme göze çarpıyor. Bitcoin fiyatının 40 bin dolara dayandığı şu…

[cryptominingbro]

Bitcoin Core 0.21.0: релиз состоялся. Обзор новых функций

https://blockchain-media.org/bitcoin-core-0-21-0-reliz-sostoyalsya-obzor-novyh-funktsiy/

Bitcoin Core 0.21.0: релиз состоялся. Обзор новых функций

Версия 0.21.0 Bitcoin Core, изначально запланированная на 1 декабря 2020 года, теперь доступна для загрузки и включает несколько заметных изменений в основной программной реализации Биткойна. В частности, Биткойн теперь поддерживает последний формат адреса Tor, код Taproot теперь доступен для тестирования, а Bitcoin Core наконец-то получил ручную настройку комиссии. С ростом цен на биткойны эти новые […]

[kriptoturknet]

[apexcryptonews]

'A Drop-in Replacement for ABC' - BCH Devs Release Bitcoin Cash Node Software

'A Drop-in Replacement for ABC' - BCH Devs Release Bitcoin Cash Node Software On February 27, a group of developers behind the Bitcoin Cash Node implementation released the first version of the project’s codebase. The new client is essentially a drop-in replacement for Bitcoin ABC 0.21.0, as the code aims to disable the Infrastructure Funding Proposal (IFP). https://apexcryptonews.com/2020/02/28/a-drop-in-replacement-for-abc-bch-devs-release-bitcoin-cash-node-software/

[cryptocurrencyaustralia]

Disclosure of censoring unconfirmed transactions to a specific victim (≤ version 0.20.2)

An attacker could prevent a node from seeing a specific unconfirmed transaction. This issue is considered Medium severity. Details Before this issue was fixed in PR 19988, the “g_already_asked_for” mechanism was used to schedule GETDATA requests for transactions. The SendMessages() function would send out GETDATAs for transactions recently announced by peers, remembering when that request was sent out in g_already_asked_for. However, this g_already_asked_for was a “limitedmap” data structure, with a bounded size that would forget the oldest entries if it reaches 50000 entries. This makes the following attack possible: * The attacker is the first to announce a legitimate transaction T to the victim. * The victim requests T from the attacker using GETDATA. * The attacker does not respond to GETDATA until close to the time when the victim would request T from other peers (~60 seconds). * Then, the attacker carefully spams the victim with bogus announcements, causing the victim’s g_already_asked_for to evict T. * The attacker announces T again to the victim (due to how the queueing works in m_tx_process_time, this does not need to be timed particularly accurately). * The victim, not finding T in g_already_asked_for will treat it as a new announcement, sending a new GETDATA for it to the attacker. * The attacker again does not respond to GETDATA. * etc. This way, the attacker can prevent the victim from ever requesting the transaction from anyone but the attacker. Attribution Responsibly disclosed by John Newbery, claiming discovery by Amiti Uttarwar and him. Timeline * 2020-04-03 John Newbery reports the bug in an email to Suhas Daftuar and others * 2020-05-08 John Newbery suggests an approach to fixing the bug * 2020-09-21 Pieter Wuille opens PR #19988 as a comprehensive approach to fixing this and other bugs * 2020-10-14 Pieter’s PR is merged * 2021-01-14 Bitcoin Core version 0.21.0 is released with a fix * 2022-04-25 The last vulnerable Bitcoin Core version (0.20.0) goes EOL * 2024-07-03 Public disclosure http://dlvr.it/T96bhn

[goforcrypto]

BCH Funding Debate: Amaury Séchet Responds to IFP Questions, Noting Contention in the West

BCH Funding Debate: Amaury Séchet Responds to IFP Questions, Noting Contention in the West

On February 20, Bitcoin Cash engineers held the second 2020 BCH developers’ meeting and the first since the Infrastructure Funding Plan (IFP) was added to the Bitcoin ABC version 0.21.0 client. Seven developers discussed new features that are coming after the May upgrade, but a majority of the conversation focused on the ongoing IFP discussion.

Also Read: BCH Funding Debate: Developers Plan to…

[thecryptoreport]

Discussing Bitcoin Core 0.21.0

Discussing Bitcoin Core 0.21.0

Listen To This Episode: In this episode of “The Van Wirdum Sjorsnado,” hosts Aaron van Wirdum and Sjors Provoost discussed the newly released Bitcoin Core 0.21.0. Bitcoin Core 0.21.0 is the 21st and latest major release of the Bitcoin Core software, the oldest and most important Bitcoin node implementation, which is often also regarded as the reference implementation for the Bitcoin…

[thecryptoreport]

Bitcoin Core 0.21.0 Released: What’s New

Bitcoin Core 0.21.0 Released: What’s New

Today marks the official release of Bitcoin Core 0.21.0, the 21st major release of Bitcoin’s original software client launched by Satoshi Nakamoto about 12 years ago.  Overseen by Bitcoin Core lead maintainer Wladimir van der Laan, this latest major release was developed by well over a hundred contributors in a span of about six months. The result of over 600 merged pull requests, Bitcoin Core…