Microsoft Office Vulnerability | Breaking Cybersecurity News | The Hacker News

Are you using LibreOffice? You should be extra careful about what document files you open using the LibreOffice software over the next few days. That's because LibreOffice contains a severe unpatched code execution vulnerability that could sneak malware into your system as soon as you open a maliciously-crafted document file. LibreOffice is one of the most popular and open source alternatives to Microsoft Office suite and is available for Windows, Linux and macOS systems. Earlier this month, LibreOffice released the latest version 6.2.5 of its software that addresses two severe vulnerabilities (CVE-2019-9848 and CVE-2019-9849), but the patch for the former has now been bypassed, security researcher Alex Inführ claims . Though Inführ has not yet disclosed details of the technique that allowed him to bypass the patch, the impact of this vulnerability remains the same, as explained below. 1.) CVE-2019-9848 : This vulnerability, which still exists in the latest version,...

Cybersecurity researchers have revealed an unpatched logical flaw in Microsoft Office 2016 and older versions that could allow an attacker to embed malicious code inside a document file, tricking users into running malware onto their computers. Discovered by researchers at Cymulate, the bug abuses the ' Online Video ' option in Word documents, a feature that allows users to embedded an online video with a link to YouTube, as shown. When a user adds an online video link to an MS Word document, the Online Video feature automatically generates an HTML embed script, which is executed when the thumbnail inside the document is clicked by the viewer. Researchers decided to go public with their findings three months after Microsoft refused to acknowledge the reported issue as a security vulnerability. How Does the New MS Word Attack Works? Since the Word Doc files (.docx) are actually zip packages of its media and configuration files, it can easily be opened and edited. Acco...

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Security researchers have spotted a new malware campaign in the wild that spreads an advanced botnet malware by leveraging at least three recently disclosed vulnerabilities in Microsoft Office. Dubbed Zyklon , the fully-featured malware has resurfaced after almost two years and primarily found targeting telecommunications, insurance and financial services. Active since early 2016, Zyklon is an HTTP botnet malware that communicates with its command-and-control servers over Tor anonymising network and allows attackers to remotely steal keylogs, sensitive data, like passwords stored in web browsers and email clients. Zyklon malware is also capable of executing additional plugins, including secretly using infected systems for DDoS attacks and cryptocurrency mining. Different versions of the Zyklon malware has previously been found being advertised on a popular underground marketplace for $75 (normal build) and $125 ( Tor-enabled build). According to a recently published report...

A recently disclosed severe 17-year-old vulnerability in Microsoft Office that lets hackers install malware on targeted computers without user interaction is now being exploited in the wild to distribute a backdoor malware. First spotted by researchers at security firm Fortinet , the malware has been dubbed Cobalt because it uses a component from a powerful and legitimate penetration testing tool, called Cobalt Strike . Cobalt Strike is a form of software developed for Red Team Operations and Adversary Simulations for accessing covert channels of a system. The vulnerability (CVE-2017-11882) that Cobalt malware utilizes to deliver the backdoor is a memory-corruption issue that allows unauthenticated, remote attackers to execute malicious code on the targeted system when opened a malicious file and potentially take full control over it. This vulnerability impacts all versions of Microsoft Office and Windows operating system, though Microsoft has already released a patch upda...

You should be extra careful when opening files in MS Office. When the world is still dealing with the threat of 'unpatched' Microsoft Office's built-in DDE feature , researchers have uncovered a serious issue with another Office component that could allow attackers to remotely install malware on targeted computers. The vulnerability is a memory-corruption issue that resides in all versions of Microsoft Office released in the past 17 years, including Microsoft Office 365, and works against all versions of Windows operating system, including the latest Microsoft Windows 10 Creators Update. Discovered by the security researchers at Embedi , the vulnerability leads to remote code execution, allowing an unauthenticated, remote attacker to execute malicious code on a targeted system without requiring user interaction after opening a malicious document. The vulnerability, identified as  CVE-2017-11882 , resides in EQNEDT32.EXE, an MS Office component which is responsibl...