Important Security Update – Enhance your VPN Security Posture!
Over the past few months, we have observed increased interest of malicious groups in leveraging remote-access VPN environments as an entry point and
CVE-2024-3661: TunnelVision - How Attackers Can Decloak Routing-Based VPNs For a Total VPN Leak — Leviathan Security Group - Penetration Testing, Security Assessment, Risk Advisory
We discovered a fundamental design problem in VPNs and we're calling it TunnelVision. This problem lets someone see what you're doing online, even if you think you're safely using a VPN.
Thousands of Ivanti VPN Appliances Impacted by Recent Vulnerability
The Shadowserver Foundation identifies thousands of Ivanti VPN instances likely impacted by a recent remote code execution flaw.
Facebook snooped on users’ Snapchat traffic in secret project, documents reveal | TechCrunch
A secret program called "Project Ghostbusters" saw Facebook devise a way to intercept and decrypt the encrypted network traffic of Snapchat users to study their behavior.
Zyxel VPN Series Pre-auth Remote Command Execution
Summary Chaining of three vulnerabilities allows unauthenticated attackers to execute arbitrary command with root privileges on Zyxel VPN firewall (VPN50, VPN100, VPN300, VPN500, VPN1000). Due to recent attack surface changes in Zyxel, the chain described below broke and become unusable – we have decided to disclose this even though it is no longer exploitable. Credit … SSD Advisory – Zyxel VPN Series Pre-auth Remote Command Execution Read More »
How Memory Forensics Revealed Exploitation of Ivanti Connect Secure VPN Zero-Day Vulnerabilities
Volexity regularly prioritizes memory forensics when responding to incidents. This strategy improves investigative capabilities in many ways across Windows, Linux, and macOS. This blog post highlights some specific ways memory forensics played a key role in determining how two zero-day vulnerabilities were being chained together to achieve unauthenticated remote code execution in Ivanti Connect Secure VPN devices.
Active Exploitation of Two Zero-Day Vulnerabilities in Ivanti Connect Secure VPN
Volexity has uncovered active in-the-wild exploitation of two vulnerabilities allowing unauthenticated remote code execution in Ivanti Connect Secure VPN appliances. An official security advisory and knowledge base article have been released by Ivanti that includes mitigation that should be applied immediately. However, a mitigation does not remedy a past or ongoing compromise. Systems should simultaneously be thoroughly analyzed per details in this post to look for signs of a breach.
Building an Exploit for FortiGate Vulnerability…
Learn how Bishop Fox built a POC exploit for the pre-authentication remote code injection vulnerability in the Fortinet SSL VPN published by Lexfo.
CHU de Rennes : un compte de prestataire détourné pour la cyberattaque
Les équipes d’Orange Cyberdefense ont détecté le trafic réseau anormal ayant trahi l’occurrence d’une cyberattaque. Celui-ci impliquait un compte VPN mis à disposition d’un tiers à fin de maintenance applicative.
New OpcJacker Malware Distributed via Fake VPN Malvertising
We discovered a new malware, which we named “OpcJacker” (due to its opcode configuration design and its cryptocurrency hijacking ability), that has been distributed in the wild since the second half of 2022.
New OpcJacker Malware Distributed via Fake VPN Malvertising
We discovered a new malware, which we named “OpcJacker” (due to its opcode configuration design and its cryptocurrency hijacking ability), that has been distributed in the wild since the second half of 2022.
Darth Vidar: The Dark Side of Evolving Threat Infrastructure
Summary Three key takeaways from our analysis of Vidar infrastructure: Russian VPN gateways are potentially providing anonymity for Vidar operators / customers, making it more challenging for analysts to have a complete overview of this threat. These gateways now appear to be migrating to Tor. Vidar operators appear to be expanding their infrastructure, so analysts need to keep them in their sights. We expect a new wave of customers and as a result, an increase of campaigns in the upcoming weeks
Darth Vidar: The Dark Side of Evolving Threat Infrastructure
Summary Three key takeaways from our analysis of Vidar infrastructure: Russian VPN gateways are potentially providing anonymity for Vidar operators / customers, making it more challenging for analysts to have a complete overview of this threat. These gateways now appear to be migrating to Tor. Vidar operators appear to be expanding their infrastructure, so analysts need to keep them in their sights. We expect a new wave of customers and as a result, an increase of campaigns in the upcoming weeks
Pulse Connect Secure: A View from the Internet
Pulse Connect Secure is a low-cost and widely-deployed SSL VPN solution for remote and mobile users. Over the years, researchers have found several significant vulnerabilities in the server software, some even resulting in the active exploitation of critical infrastructure by malicious threat actors. In April of 2021, CISA released a report detailing some of these activities, which included exploiting several unknown (at the time) vulnerabilities and resulted in swift action from Ivanti, the Pulse Connect Secure software developer.
Pulse Connect Secure: A View from the Internet
Pulse Connect Secure is a low-cost and widely-deployed SSL VPN solution for remote and mobile users. Over the years, researchers have found several significant vulnerabilities in the server software, some even resulting in the active exploitation of critical infrastructure by malicious threat actors. In April of 2021, CISA released a report detailing some of these activities, which included exploiting several unknown (at the time) vulnerabilities and resulted in swift action from Ivanti, the Pulse Connect Secure software developer.
How Data Brokers Sell Access to the Backbone of the Internet
ISPs are quietly distributing "netflow" data that can, among other things, trace traffic through VPNs.
How Data Brokers Sell Access to the Backbone of the Internet
ISPs are quietly distributing "netflow" data that can, among other things, trace traffic through VPNs.
How Data Brokers Sell Access to the Backbone of the Internet
ISPs are quietly distributing "netflow" data that can, among other things, trace traffic through VPNs.