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The Hacker News - Cybersecurity News and Analysis: blockchain applications

Critical RCE Flaw Discovered in Blockchain-Based EOS Smart Contract System

Critical RCE Flaw Discovered in Blockchain-Based EOS Smart Contract System

May 29, 2018Swati Khandelwal
Security researchers have discovered a series of new vulnerabilities in EOS blockchain platform, one of which could allow remote hackers to take complete control over the node servers running the critical blockchain-based applications. EOS is an open source smart contract platform, known as 'Blockchain 3.0,' that allows developers to build decentralized applications over blockchain infrastructure, just like Ethereum. Discovered by Chinese security researchers at Qihoo 360 —Yuki Chen of Vulcan team and Zhiniang Peng of Core security team—the vulnerability is a buffer out-of-bounds write issue which resides in the function used by nodes server to parse contracts. To achieve remote code execution on a targeted node, all an attacker needs to do is upload a maliciously crafted WASM file (a smart contract) written in WebAssembly to the server. As soon as the vulnerable process parser reads the WASM file, the malicious payload gets executed on the node, which could then al
Learn Ethereum Development – Build Decentralized Blockchain Apps

Learn Ethereum Development – Build Decentralized Blockchain Apps

November 06, 2017The Hacker News
As of today — 1 Bitcoin = $7300 USD (Approx 471,000 INR) At the beginning of this year, 1 Bitcoin was approximately equal to $1000, and now it has surged to a new height, marking its market capitalization at over $124 billion. Is it really too late to invest in Bitcoin or other cryptocurrencies like Ethereum? For those wondering if they have missed the money-making boat, the answer is—NO, it's never too late to invest. In case you are new to cryptocurrency trading, we have a simple step-by-step guide on our deal store that explains how to invest in cryptocurrencies . However, the blockchain, the revolutionary technology behind Bitcoin and other digital currencies, is not always about cryptocurrencies. Though it is a decentralized public database which ensures that all transactions are properly conducted and recorded, Blockchains can be used for a wide variety of applications, such as for digital identity management, smart assets, digital voting, distributed cloud sto
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