Microsoft Patch Tuesday, April 2020 Edition

Microsoft today released updates to fix 113 security vulnerabilities in its various Windows operating systems and related software. Those include at least three flaws that are actively being exploited, as well as two others which were publicly detailed prior to today, potentially giving attackers...

April Patch Tuesday: Microsoft Battles 4 Bugs Under Active Exploit

Microsoft has released its April 2020 Patch Tuesday security updates, its first big patch update released since the work-from-home era truly got underway. It’s a doozie, with the tech giant disclosing 113 vulnerabilities. Out of these, 19 are rated as critical, and 94 are rated as important...

April 2020 Patch Tuesday – 113 Vulns, 19 Critical, Zero-Day Patches, SharePoint, Adobe ColdFusion

This month’s Microsoft Patch Tuesday addresses 113 vulnerabilities with 19 of them labeled as Critical. The 19 Critical vulnerabilities cover Adobe Font Manager Library 0-day, SharePoint, Hyper-V, Scripting Engines, Media Foundation, Microsoft Graphics, Windows Codecs, and Dynamics Business...

Microsoft Issues Patches for 3 Bugs Exploited as Zero-Day in the Wild

It's April 2020 Patch Tuesday, and during these challenging times of coronavirus pandemic, this month's patch management process would not go easy for many organizations where most of the resources are working remotely. Microsoft today released the latest batch of software security updates for al...

Think Fast: Time Between Disclosure, Patch Release and Vulnerability Exploitation — Intelligence for Vulnerability Management, Part Two

One of the critical strategic and tactical roles that cyber threat intelligence CTI plays is in the tracking, analysis, and prioritization of software vulnerabilities that could potentially put an organization’s data, employees and customers at risk. In this four-part blog series, FireEye Mandian...

Fuji Electric V-Server Lite

1. EXECUTIVE SUMMARY CVSS v3 7.8 ATTENTION: Exploitable remotely/low skill level to exploit Vendor: Fuji Electric Equipment: V-Server Lite Vulnerability: Heap-based Buffer Overflow 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a remote attacker to gain elevated...

A Brisk Private Trade in Zero-Days Widens Their Use

There were more zero-days exploited in 2019 than any of the previous three years, according to telemetry from FireEye Mandiant. The firm said that’s likely due to more zero-days coming up for sale by cyber-weapons dealers like NSO Group; a growing commercial market has made such tools much more...

A week in security (March 30 – April 5)

Last week on Malwarebytes Labs, we offered readers tips for safe online shopping now that cybercriminals are ramping up Internet-based attacks, showed the impact that GDPR has around the world, and helped users understand how social media platforms mine their personal data. We also hosted our...

Government VPN Servers Targeted in Zero-Day Attack

As the Chinese government turns to virtual private networks VPNs to provide access to official resources for those working remotely amid the COVID-19 pandemic, the DarkHotel APT has seized the opportunity to target those VPNs in a zero-day attack, researchers said. According to security analysts...

This Map Shows the Global Spread of Zero-Day Hacking Techniques

The collection of countries using those secret hacking techniques has expanded far beyond the usual suspects...

Zero-Day Exploitation Increasingly Demonstrates Access to Money, Rather than Skill — Intelligence for Vulnerability Management, Part One

One of the critical strategic and tactical roles that cyber threat intelligence CTI plays is in the tracking, analysis, and prioritization of software vulnerabilities that could potentially put an organization’s data, employees and customers at risk. In this four-part blog series, FireEye Mandian...

libucl:ucl_add_string_fuzzer: Heap-buffer-overflow in ucl_lex_json_string

Detailed Report: https://oss-fuzz.com/testcase?key=5643278969208832 Project: libucl Fuzzing Engine: libFuzzer Fuzz Target: ucladdstringfuzzer Job Type: libfuzzerasanlibucl Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x6020000000b2 Crash State: ucllexjsonstring...

Firefox Zero-Day Flaws Exploited in the Wild Get Patched

Mozilla patched two Firefox browser zero-day vulnerabilities actively being exploited in the wild. The flaws, both use-after-free bugs, have been part of “targeted attacks in the wild,” according to a Mozilla Foundation security advisory posted Friday. Both bugs have critical ratings and allow...

Using Zoom? Here’s how to keep your business and employees safe

Cyber-criminals are always looking for new opportunities to make money and steal data. Globally trending events are a tried-and-tested way of doing just this, and they don’t come much bigger than the current Covid-19 pandemic. It’s sparking a wave of phishing, BEC, extortion, ransomware and data...

openssl:client: Heap-use-after-free in CRYPTO_DOWN_REF

Project: https://github.com/openssl/openssl.git Detailed Report: https://oss-fuzz.com/testcase?key=6296602006519808 Project: openssl Fuzzing Engine: honggfuzz Fuzz Target: client Job Type: honggfuzzasanopenssl Platform Id: linux Crash Type: Heap-use-after-free WRITE 4 Crash Address: 0x60f00019d8a...

Two Zoom Zero-Day Flaws Uncovered

UPDATE Two zero-day flaws have been uncovered in Zoom’s macOS client version, according to researchers. The web conferencing platform vulnerabilities could give local, unprivileged attackers root privileges, and allow them to access victims’ microphone and camera. As of Thursday, the two...

The Zoom Privacy Backlash Is Only Getting Started

A class action lawsuit. Rampant zoombombing. And as of today, two new zero-day vulnerabilities...

libreoffice:pptfuzzer: Container-overflow in SdrObjList::GetObj

Project: git://anongit.freedesktop.org/libreoffice/core Detailed Report: https://oss-fuzz.com/testcase?key=5163258324713472 Project: libreoffice Fuzzing Engine: libFuzzer Fuzz Target: pptfuzzer Job Type: libfuzzerasanlibreoffice Platform Id: linux Crash Type: Container-overflow READ 8 Crash...

Nation-State Attacks Drop in Latest Google Analysis

Google has registered a significant drop in government-backed cyberattacks against its properties and the people who use its products. Google sends out warnings if it detects that an account is a target of government-backed phishing or malware attempts. For 2019, the internet giant sent almost...

Keeping Our Kids and Our Earth Safe: Thoughts for Earth Day

This April 22 marks the 50th anniversary of Earth Day, an annual event celebrated around the world to demonstrate support for environmental protection. First celebrated in 1970, it now includes events coordinated globally by the Earth Day Network in more than 193 countries. As we get ready to...