zero day exploit | Breaking Cybersecurity News | The Hacker News

On August 13, 2016, a hacking unit calling itself " The Shadow Brokers " announced that it had stolen malware tools and exploits used by the Equation Group, a sophisticated threat actor believed to be affiliated to the Tailored Access Operations (TAO) unit of the U.S.  National Security Agency  (NSA). Although  the group  has since signed off following the unprecedented disclosures, new "conclusive" evidence unearthed by Check Point Research shows that this was not an isolated incident, and that other threat actors may have had access to some of the same tools before they were published. The previously undocumented cyber-theft took place more than two years prior to the Shadow Brokers episode, the American-Israeli cybersecurity company said in an exhaustive report published today, resulting in U.S.-developed cyber tools reaching the hands of a Chinese advanced persistent threat which then repurposed them in order to strike American targets. "The caught-in-...

An anonymous security researcher going by the name of SandboxEscaper today publicly shared a second zero-day exploit that can be used to bypass a recently patched elevation of privilege vulnerability in the Microsoft Windows operating system. SandboxEscaper is known for publicly dropping zero-day exploits for unpatched Windows vulnerabilities. In the past year, the hacker has disclosed over half a dozen zero-day vulnerabilities in Windows OS without actually bothering to make Microsoft aware of the issues first. Just two weeks ago, the hacker disclosed four new Windows exploits , one of which was an exploit that could allow attackers to bypass a patched elevation of privilege vulnerability (CVE-2019-0841) in Windows that existed when Windows AppX Deployment Service (AppXSVC) improperly handles hard links. Now, the hacker claims to have found a new way to bypass Microsoft security patch for the same vulnerability, allowing a specially crafted malicious application to escalate its ...

Vulnerability Management (VM) has long been a cornerstone of organizational cybersecurity. Nearly as old as the discipline of cybersecurity itself, it aims to help organizations identify and address potential security issues before they become serious problems. Yet, in recent years, the limitations of this approach have become increasingly evident.  At its core, Vulnerability Management processes remain essential for identifying and addressing weaknesses. But as time marches on and attack avenues evolve, this approach is beginning to show its age. In a recent report, How to Grow Vulnerability Management into Exposure Management (Gartner, How to Grow Vulnerability Management Into Exposure Management, 8 November 2024, Mitchell Schneider Et Al.), we believe Gartner® addresses this point precisely and demonstrates how organizations can – and must – shift from a vulnerability-centric strategy to a broader Exposure Management (EM) framework. We feel it's more than a worthwhile read an...

A security researcher with Twitter alias SandboxEscaper—who two months ago publicly dropped a zero-day exploit for Microsoft Windows Task Scheduler—has yesterday released another proof-of-concept exploit for a new Windows zero-day vulnerability. SandboxEscaper posted a link to a Github page hosting a proof-of-concept (PoC) exploit for the vulnerability that appears to be a privilege escalation flaw residing in Microsoft Data Sharing (dssvc.dll). The Data Sharing Service is a local service that runs as LocalSystem account with extensive privileges and provides data brokering between applications. The flaw could allow a low-privileged attacker to elevate their privileges on a target system, though the PoC exploit code (deletebug.exe) released by the researcher only allows a low privileged user to delete critical system files—that otherwise would only be possible via admin level privileges. "Not the same bug I posted a while back, this doesn't write garbage to files...

A known vulnerability in MikroTik routers is potentially far more dangerous than previously thought. A cybersecurity researcher from Tenable Research has released a new proof-of-concept (PoC) RCE attack for an old directory traversal vulnerability that was found and patched within a day of its discovery in April this year. The vulnerability, identified as CVE-2018-14847, was initially rated as medium in severity but should now be rated critical because the new hacking technique used against vulnerable MikroTik routers allows attackers to remotely execute code on affected devices and gain a root shell. The vulnerability impacts Winbox—a management component for administrators to set up their routers using a Web-based interface—and a Windows GUI application for the RouterOS software used by the MikroTik devices. The vulnerability allows "remote attackers to bypass authentication and read arbitrary files by modifying a request to change one byte related to a Session ID....

Security researchers at Microsoft have unveiled details of two critical and important zero-day vulnerabilities that had recently been discovered after someone uploaded a malicious PDF file to VirusTotal, and get patched before being used in the wild . In late March, researchers at ESET found a malicious PDF file on VirusTotal, which they shared with the security team at Microsoft "as a potential exploit for an unknown Windows kernel vulnerability." After analyzing the malicious PDF file, the Microsoft team found that the same file includes two different zero-day exploits—one for Adobe Acrobat and Reader, and the other targeting Microsoft Windows. Since the patches for both the vulnerabilities were released in the second week of May, Microsoft released details of both the vulnerabilities today, after giving users enough time to update their vulnerable operating systems and Adobe software. According to the researchers, the malicious PDF including both the zero-days e...

Security researchers have discovered and disclosed details of two unpatched critical vulnerabilities in a popular internet forum software—vBulletin—one of which could allow a remote attacker to execute malicious code on the latest version of vBulletin application server. vBulletin is a widely used proprietary Internet forum software package based on PHP and MySQL database server. It powers more than 100,000 websites on the Internet, including Fortune 500 and Alexa Top 1 million companies websites and forums. The vulnerabilities were discovered by a security researcher from Italy-based security firm TRUEL IT and an unknown independent security researcher, who disclosed the details of the vulnerabilities by Beyond Security's SecuriTeam Secure Disclosure program. The vulnerabilities affect version 5 of the vBulletin forum software and are currently unpatched. Beyond Security claims, it tried to contact vBulletin since November 21, 2017, but received no response from the compa...

FinSpy —the infamous surveillance malware is back and infecting high-profile targets using a new Adobe Flash zero-day exploit delivered through Microsoft Office documents. Security researchers from Kaspersky Labs have discovered a new zero-day remote code execution vulnerability in Adobe Flash, which was being actively exploited in the wild by a group of advanced persistent threat actors, known as BlackOasis . The critical type confusion vulnerability, tracked as CVE-2017-11292 , could lead to code execution and affects Flash Player 21.0.0.226 for major operating systems including Windows, Macintosh, Linux and Chrome OS. Researchers say BlackOasis is the same group of attackers which were also responsible for exploiting another zero-day vulnerability ( CVE-2017-8759 ) discovered by FireEye researchers in September 2017. Also, the final FinSpy payload in the current attacks exploiting Flash zero-day (CVE-2017-11292) shares the same command and control (C&C) server as the...