Nation-State Actors Weaponize Ivanti VPN Zero-Days, Deploying 5 Malware Families

As many as five different malware families were deployed by suspected nation-state actors as part of post-exploitation activities leveraging two zero-day vulnerabilities in Ivanti Connect Secure ICS VPN appliances since early December 2023. "These families allow the threat actors to circumvent...

Summary of Vulnerabilities, Actors & Attacks: December 2023

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Act Now: CISA Flags Active Exploitation of Microsoft SharePoint Vulnerability

The U.S. Cybersecurity and Infrastructure Security Agency CISA has added a critical security vulnerability impacting Microsoft SharePoint Server to its Known Exploited Vulnerabilities KEV catalog, citing evidence of active exploitation. The issue, tracked as CVE-2023-29357 CVSS score: 9.8, is a...

Dual Zero-Day Threats in Ivanti Connect Secure and Policy Secure Gateways – CVE-2023-46805 and CVE-2024-21887

In recent and alarming cybersecurity developments, Volexity researchers have discovered that attackers are exploiting two distinct zero-day vulnerabilities in a coordinated manner to enable unauthenticated remote code execution RCE. These vulnerabilities are identified as CVE-2023-46805 and...

Threat Actors Increasingly Abusing GitHub for Malicious Purposes

The ubiquity of GitHub in information technology IT environments has made it a lucrative choice for threat actors to host and deliver malicious payloads and act as dead drop resolvers, command-and-control, and data exfiltration points. "Using GitHub services for malicious infrastructure allows...

CVE-2023-45139

A flaw was found in the subsetting module of FontTools, which contains an XML External Entity Injection XXE vulnerability. This flaw allows malicious actors to exploit the parsing of candidate fonts, particularly those with an OT-SVG format that includes an SVG table. Through this vulnerability,...

Type Juggling Leads to Two Vulnerabilities in POST SMTP Mailer WordPress Plugin

On December 14th, 2023, during our Bug Bounty Program Holiday Bug Extravaganza, we received a submission for an Authorization Bypass vulnerability in POST SMTP Mailer, a WordPress plugin with over 300,000+ active installations. This vulnerability makes it possible for unauthenticated threat actor...

CISA Known Exploited Vulnerability Catalog December 2023

For a detailed CISAs KEV Catalog, download the pdf file here Summary The Known Exploited Vulnerability KEV catalog, maintained by CISA, is the authoritative source of vulnerabilities that have been exploited in the wild. It is recommended that all organizations review and monitor the KEV catalog,...

CVE-2023-51508

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Jordy Meow Database Cleaner: Clean, Optimize & Repair.This issue affects Database Cleaner: Clean, Optimize & Repair: from n/a through 0.9.8...

CVE-2023-51408

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in StudioWombat WP Optin Wheel – Gamified Optin Email Marketing Tool for WordPress and WooCommerce.This issue affects WP Optin Wheel – Gamified Optin Email Marketing Tool for WordPress and WooCommerce: from n/a through 1.4.3...

Webinar – Leverage Zero Trust Security to Minimize Your Attack Surface

Digital expansion inevitably increases the external attack surface, making you susceptible to cyberthreats. Threat actors increasingly exploit the vulnerabilities stemming from software and infrastructure exposed to the internet; this ironically includes security tools, particularly firewalls and...

NIST Warns of Security and Privacy Risks from Rapid AI System Deployment

The U.S. National Institute of Standards and Technology NIST is calling attention to the privacy and security challenges that arise as a result of increased deployment of artificial intelligence AI systems in recent years. "These security and privacy challenges include the potential for adversari...

Alert: Ivanti Releases Patch for Critical Vulnerability in Endpoint Manager Solution

Ivanti has released security updates to address a critical flaw impacting its Endpoint Manager EPM solution that, if successfully exploited, could result in remote code execution RCE on susceptible servers. Tracked as CVE-2023-39336, the vulnerability has been rated 9.6 out of 10 on the CVSS...

SMTP Smuggling: New Flaw Lets Attackers Bypass Security and Spoof Emails

A new exploitation technique called Simple Mail Transfer Protocol SMTP smuggling can be weaponized by threat actors to send spoofed emails with fake sender addresses while bypassing security measures. "Threat actors could abuse vulnerable SMTP servers worldwide to send malicious emails from...

Microsoft Disables MSIX App Installer Protocol Widely Used in Malware Attacks

Microsoft on Thursday said it's once again disabling the ms-appinstaller protocol handler by default following its abuse by multiple threat actors to distribute malware. "The observed threat actor activity abuses the current implementation of the ms-appinstaller protocol handler as an access vect...

Barracuda Fixes ACE Zero-day Vulnerability Exploited by Attackers

Summary: The Barracuda Email Security Gateway vulnerability CVE-2023-7102 allows remote attackers to execute arbitrary commands, posing a substantial threat to the security and functionality of affected systems. Exploitation by threat actors has led to the deployment of new malware variants,...

Financially motivated threat actors misusing App Installer

Since mid-November 2023, Microsoft Threat Intelligence has observed threat actors, including financially motivated actors like Storm-0569, Storm-1113, Sangria Tempest, and Storm-1674, utilizing the ms-appinstaller URI scheme App Installer to distribute malware. In addition to ensuring that...

Microsoft addresses App Installer abuse

28 October 2024 Update Microsoft disabled the ms-appinstaller URI scheme handler by default in App Installer on 28 December 2023 as a security response to protect customers from attackers’ evolving techniques against previous safeguards for CVE-2021-43890. Microsoft is pleased to announce that we...

Chinese Hackers Exploited New Zero-Day in Barracuda's ESG Appliances

Barracuda has revealed that Chinese threat actors exploited a new zero-day in its Email Security Gateway ESG appliances to deploy backdoors on a "limited number" of devices. Tracked as CVE-2023-7102, the issue relates to a case of arbitrary code execution that resides within a third-party and...

CVE-2023-2487

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Smackcoders Export All Posts, Products, Orders, Refunds & Users.This issue affects Export All Posts, Products, Orders, Refunds & Users: from n/a through 2.4.1...