Design/Logic Flaw

BIP-143 in the Bitcoin protocol specification mishandles the signing of a Segwit transaction, which allows attackers to trick a user into making two signatures in certain cases, potentially leading to a huge transaction fee. NOTE: this affects all hardware wallets. It was fixed in 1.9.1 for the...

CVE-2020-14199

The CVE-2020-14199 issue is a BIP-143 signing mishandling in the Bitcoin protocol that can mislead users into producing two signatures during Segwit transactions. Affected products are Trezor One firmware before 1.9.1 and Trezor Model T firmware before 2.3.1; these devices have firmware updates t...

CVE-2020-14199: Improper Verification of Cryptographic Signature

BIP-143 in the Bitcoin protocol specification mishandles the signing of a Segwit transaction, which allows attackers to trick a user into making two signatures in certain cases, potentially leading to a huge transaction fee. NOTE: this affects all hardware wallets. It was fixed in 1.9.1 for the...

Fake version of note sharing site Privnote.com stealing users’ Bitcoin

By Waqas A fake version of popular encrypted messages web service Privnote.com that’s redirecting user’s cryptocurrency to scammers. This is a post from HackRead.com Read the original post: Fake version of note sharing site Privnote.com stealing users’ Bitcoin...

Privnotes.com Is Phishing Bitcoin from Users of Private Messaging Service Privnote.com

For the past year, a site called Privnotes.com has been impersonating Privnote.com, a legitimate, free service that offers private, encrypted messages which self-destruct automatically after they are read. Until recently, I couldn't quite work out what Privnotes was up to, but today it became...

YouTube scammers impersonated Elon Musk, SpaceX; stole $150k in BTC

By Deeba Ahmed Scammers successfully tricked viewers in to sending a small amount of Bitcoin and get double in return. This is a post from HackRead.com Read the original post: YouTube scammers impersonated Elon Musk, SpaceX; stole $150k in BTC...

Florence, Ala. Hit By Ransomware 12 Days After Being Alerted by KrebsOnSecurity

In late May, KrebsOnSecurity alerted numerous officials in Florence, Ala. that their information technology systems had been infiltrated by hackers who specialize in deploying ransomware. Nevertheless, on Friday, June 5, the intruders sprang their attack, deploying ransomware and demanding nearly...

Clever Phishing Attack Bypasses MFA to Nab Microsoft Office 365 Credentials

A new phishing campaign can bypass multi-factor authentication MFA on Office 365 to access victims’ data stored on the cloud and use it to extort a Bitcoin ransom or even find new victims to target, security researchers have found. Researchers at Cofense Phishing Defense Center discovered the...

bch-wallet-plugin-postoffice (>=1.0.0, <=1.0.8), bitcoin-wallet-api (>=0.0.5, <=0.1.6) potentially affected by CVE-2020-11071 via slpjs (>=0.22.5, <=0.23.3)

slpjs NPM version =0.22.5, =1.0.0, =0.0.5, =0.1.6 Source cves: CVE-2020-11071 Source advisory: OSV:GHSA-JC83-CPF9-Q7C6...

PHP Scripts Mall Bitcoin MLM Software Cross-Site Scripting Vulnerability

PHP Scripts Mall Bitcoin MLM Software is a PHP bitcoin management software from PHP Scripts Mall India.A cross-site scripting vulnerability exists in PHP Scripts Mall Bitcoin MLM Software version 1.0.2. A remote attacker can exploit this vulnerability to inject arbitrary web script or HTML...

Electrum Python Console Security Vulnerability

Electrum is a lightweight Bitcoin client software, and Python console is one of the Python console programs.A security vulnerability exists in the Python console in Electrum versions 2.9.4 and earlier, and versions 3.x through 3.0.5. The vulnerability can be exploited by an attacker to steal...

Bitcoin Core version 0.15.1 buffer overflow

Bitcoin is an e-currency created with open source P2P software. A buffer error vulnerability exists in bitcoind and Bitcoin-Qt versions prior to 0.15.1. The vulnerability stems from a networked system or product performing operations in memory without properly validating data boundaries, resultin...

Bitcoind/Bitcoin-Qt Denial of Service

Bitcoin is an e-currency created with open source P2P software. An unspecified vulnerability exists in Bitcoind and Bitcoin-Qt. A remote attacker could exploit this vulnerability to cause a denial of service via unknown vectors...

Bitcoin Core and Bitcoin Knots Access Control Errors

Bitcoin is an electronic currency created with open source P2P software. An access control error vulnerability exists in Bitcoin Core versions 0.12.0 through 0.17.1 and Bitcoin Knots versions 0.12.0 through 0.17.1.knots prior to 20181229. A local attacker can exploit the vulnerability to steal a...

Bitcoind and Bitcoin-Qt Bloom Filter Implementations for Input Validation

A denial of service vulnerability exists in the Bloom Filter implementation in Bitcoind and Bitcoin-Qt versions 0.8.x prior to 0.8.4rc1. A remote attacker can exploit this vulnerability to cause a denial of service except for zero errors and process crashes via a specially crafted message sequenc...

Logic Flaw Vulnerability in Bitcoin Core and Bitcoin Knots

Bitcoin is an electronic currency created with open source P2P software. A security vulnerability exists in Bitcoin Core versions prior to 0.13.0, Bitcoin Knots versions prior to 0.13.0.knots20160814 and other tokens. An attacker could exploit this vulnerability to cause a denial of service memor...

Bitcoin Core & Knots Incorrect Access Controls

Bitcoin Core is an open source client for verifying the validity of blockchain transactions. Bitcoin Knots is a complete Bitcoin client. An access control error vulnerability exists in Bitcoin Core versions 0.12.0 through 0.17.1 and Bitcoin Knots versions 0.12.0 through 0.17.1.knots prior to...

Bitcoind/Bitcoin-Qt Unspecified Security

Bitcoin is an e-currency created with open source P2P software. An unspecified vulnerability exists in Bitcoind and Bitcoin-Qt. A remote attacker could exploit this vulnerability to cause a denial of service via unknown vectors...

BCH public chain OP_CHECKDATASIG suffers from a logic flaw vulnerability

The attack payload is a precisely constructed P2SH Transaction that utilizes the OPCHECKDATASIG opcode introduced by the BCH upgrade last November. The attack payload has a SigOP count of 1334 15 = 20010, and this attack payload TX is rejected by the node with an error of too many sigops, which i...

Leaf Node Weaknesses in Bitcoin Merkle Tree Designs

Merkle tree in Chinese is called Merkle tree, is a kind of tree in computer data structure. The vulnerability stems from certain weaknesses in the design of leaf nodes in a Merkle tree. An attacker can exploit this vulnerability to modify arbitrary payment amounts...