CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

Design/Logic Flaw

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2021-31876

CVE-2021-31876 affects Bitcoin Core versions 0.12.0–0.21.1. The issue stems from not properly enforcing the replacement policy in BIP125, where an unconfirmed child with nSequence = 0xff_ff_ff_ff can be treated as replaceable, but the mempool rejects the replacement due to an inadequate PreChecks...

CVE-2021-31876: Incorrect Authorization

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

Unspecified Vulnerability in Bitcoin Core (CNVD-2021-38774)

Bitcoin Core is an open source client for verifying the validity of blockchain transactions. A security vulnerability exists in Bitcoin Core that allows a remote attacker to exploit the vulnerability to bypass certain security restrictions...

Over 25% Of Tor Exit Relays Spied On Users' Dark Web Activities

An unknown threat actor managed to control more than 27% of the entire Tor network exit capacity in early February 2021, a new study on the dark web infrastructure revealed. "The entity attacking Tor users is actively exploiting tor users since over a year and expanded the scale of their attacks ...

bitcoin-core:autofile: Crash in FuzzedFileProvider::seek

Detailed Report: https://oss-fuzz.com/testcase?key=5701704407449600 Project: bitcoin-core Fuzzing Engine: libFuzzer Fuzz Target: autofile Job Type: libfuzzerasani386bitcoin-core Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0xffffe007 Crash State: FuzzedFileProvider::seek IOdowrite...

Bitcoin Core 安全漏洞

Bitcoin Core is an open source client for verifying the validity of blockchain transactions. A security vulnerability exists in Bitcoin Core that allows a remote attacker to exploit the vulnerability to bypass certain security restrictions...

Identifying the Person Behind Bitcoin Fog

The person behind the Bitcoin Fog was identified and arrested. Bitcoin Fog was an anonymization service: for a fee, it mixed a bunch of peoples bitcoins up so that it was hard to figure out where any individual coins came from. It ran for ten years. Identifying the person behind Bitcoin Fog serve...

Bitcoin scammers phish for wallet recovery codes on Twitter

Were no strangers to the Twitter customer support DM slide scam. This is where someone watches an organisation perform customer support on Twitter, and injects themselves into the conversation at opportune moments hoping potential victims don’t notice. This is aided by imitation accounts modelled...

Feds Arrest an Alleged $336M Bitcoin-Laundering Kingpin

The alleged administrator of Bitcoin Fog kept the dark web service running for 10 years before the IRS caught up with him...

New QNAP NAS Flaws Exploited In Recent Ransomware Attacks - Patch It!

A new ransomware strain called "Qlocker" is targeting QNAP network attached storage NAS devices as part of an ongoing campaign and encrypting files in password-protected 7zip archives. First reports of the infections emerged on April 20, with the adversaries behind the operations demanding a...

A week in security (April 12 – 18)

Last week on Malwarebytes Labs, our podcast featured Troy Hunt, Chloé Messdaghi, and Tanya Janca who discussed security fatigue with us. We announced the release of the Malwarebytes SMB Cybersecurity Trust & Confidence Report 2021, a first-of-its-kind survey of the hardworking IT professionals on...

How bitcoin payments unmasked a man who hired a Dark Web contract killer

An Italian citizens apparent attempt to hire a hitman on the Dark Web has been undone by clever analysis of his Bitcoin transactions. The man, who is reported to be an IT worker employed by a major corporation, is alleged to have paid the hitman to assassinate his former girlfriend. What happened...

Fake Trezor app steals more than $1 million worth of crypto coins

Several users of Trezor, a small hardware device that acts as a cryptocurrency wallet, have been duped by a fake app with the same name. The app was available on Google Play and Apple’s App Store and also claimed to be from SatoshiLabs, the creators of Trezor. According to the Washington Post, th...

DeepDotWeb Admin Pleads Guilty to Money Laundering Charges

The U.S. Department of Justice DoJ on Wednesday said that an Israeli national pleaded guilty for his role as an "administrator" of a portal called DeepDotWeb DDW, a "news" website that "served as a gateway to numerous dark web marketplaces." According to the unsealed court documents, Tal Prihar ,...