Vulnerability

Detecting CVE-2022-21907, an IIS HTTP Remote Code Execution vulnerability

In January 2022, Microsoft disclosed a remote code execution vulnerability for Internet Information Server (IIS) identified as CVE-2022-21907, which they have subsequently reported as wormable. Through Microsoft, Corelight Labs was able to review a proof of concept for an attack against the vulnerability. This blog presents an open source detection method that Corelight Labs is releasing to detect exploit attempts of CVE-2022-21907.

Trustwave Threat Hunting Guide: Identifying PwnKit (CVE-2021-4034) Exploitation

The Trustwave Threat Hunting team has authored a practical guide to help the cybersecurity community address the Linux “polkit” Local Privilege Escalation vulnerability (CVE-2021-4034) by identifying common behavior in exploitation.

Trustwave Action Response: Polkit Privilege Escalation Vulnerability - PwnKit (CVE-2021-4034)

Trustwave security and engineering teams became aware of the vulnerability in Polkit's pkexec component identified as CVE-2021-4034 (PwnKit) on January 25. We immediately investigated the vulnerability and potential exploits and continue to actively monitor the situation for our clients. Check your distribution for specific patches. As part of a strong patch management program, ensuring your infrastructure and applications are up to date is critical for mitigating cyber risk..

How To Detect & Mitigate Apache Log4j CVE-2021-44228

If you've already heard about the Apache Log4j CVE-2021-44228 (also known as Log4Shell and formally LogJam) vulnerability then you will know that this is a significant issue as many organisations are scrambling to secure their infrastructure from this critical remote code execution (RCE) vulnerability. With these considerations in mind, we wanted to bring you a guide that outlines the steps that can be followed to ensure the security of your systems from CVE-2021-44228.

Stranger Danger: Live hack of how a Log4Shell exploit works

The Log4Shell vulnerability took the Java community by surprise at the end of 2021, and many organizations are still mitigating its impact. To help development teams stay informed as the situation unfolds, Snyk has created and continues to update its Log4j vulnerability resource center.

You've Discovered a Vulnerability-Now What?

Identifying a weakness or an imminent threat is not the same as resolving the problem. Inaction is not an option. Or to put it another way, taking a deer-in-the-headlights approach does not work well in the cybersecurity realm. Security leaders and teams, and the DevSecOps units they work with, need to focus on taking action as soon as possible once they have found a vulnerability using a scanner, application security testing, penetration testing, or some other method.

CVE-2022-0185 - What does the newest kernel exploit mean for Kubernetes users and how to detect it?

In the last few days, Linux maintainers disclosed a broadly available Linux kernel vulnerability that enables attackers to escape containers and get full control over the node. To be able to exploit this vulnerability, the attacker needs to be able to run code in the container and the container must have CAP_SYS_ADMIN privileges. Linux kernel and all major distro maintainers have released patches.

CVE-2022-0185: Detecting and mitigating Linux Kernel vulnerability causing container escape

This week, Linux maintainers and vendors disclosed a heap overflow vulnerability in the Linux Kernel. The vulnerability has been issued a Common Vulnerability and Exposures ID of CVE-2022-0185 and is rated as a High (7.8) severity. The flaw occurs in the Filesystem Context system when handling legacy parameters. An attacker can leverage this flaw to cause a DDoS, escape container environments, and elevate privileges.

Vulnerability Management: A Guide

Vulnerability management is the ongoing practice of continually identifying, classifying, prioritizing, remediating, and mitigating software vulnerabilities or weaknesses in operating systems, enterprise applications — whether in the cloud or on-premises. It also applies to browsers and end-user applications. Vulnerability management is integral to both computer and network security. It enables an organization to monitor its digital environment for potential risks in real time.

Explosion in E-Commerce Shines a Spotlight on Vulnerability Management in Retail

The retail sector has its own unique cybersecurity risks, especially given the growing emphasis on online commerce. The trend toward purchasing goods and services on the internet has been going on for years. But the volume of e-commerce has seen a sharp increase since the beginning of the pandemic, when many physical stores were forced to lock down or consumers simply opted to buy online rather than visiting brick-and-mortar locations.