AWS’s Log4Shell Hot Patch Vulnerable to Container Escape and Privilege Escalation

ollowing Log4Shell, AWS released several hot patch solutions that monitor for vulnerable Java applications and Java containers and patch them on the fly. Each solution suits a different environment, covering standalone servers, Kubernetes clusters, Elastic Container Service (ECS) clusters and Read More …

CRI-O Security Update for Kubernetes

CRI-O has released a security update addressing a critical vulnerability—CVE-2022-0811—in CRI-O 1.19. A local attacker could exploit this vulnerability to take control of an affected Kubernetes environment as well as other software or platforms that use CRI-O runtime containers. CISA Read More …

Container Escape to Shadow Admin: GKE Autopilot Vulnerabilities

In February 2021, Google announced Autopilot, a new mode of operation in Google Kubernetes Engine (GKE). With Autopilot, Google provides a “hands-off” Kubernetes experience, managing cluster infrastructure for the customer. The platform automatically provisions and removes nodes based on resource Read More …

Open-source Kubernetes tool Argo CD has a high-severity path traversal flaw: Patch now

A zero-day vulnerability in open-source Kubernetes development tool Argo lets malicious people steal passwords from git-crypt and other sensitive information by simply uploading a crafted Helm chart. Charts are the actual packaging format of ubiquitous tool-for-managing-Kubernetes applications Helm. The vuln, Read More …

TeamTNT Upgrades Arsenal, Refines Focus on Kubernetes and GPU Environments

In previous entries, we described how the hacking group TeamTNT targeted unsecured Redis instances, exposed Docker APIs, and vulnerable Kubernetes clusters in order to deploy cryptocurrency-mining payloads and credential stealers. TeamTNT was one of the first cybercriminal groups to focus Read More …

NSA, CISA release Kubernetes Hardening Guidance

FORT MEADE, Md. – The National Security Agency (NSA) and the Cybersecurity and Infrastructure Security Agency (CISA) released a Cybersecurity Technical Report, “Kubernetes Hardening Guidance,” today. This report details threats to Kubernetes environments and provides configuration guidance to minimize risk. Read More …

Siloscape: First Known Malware Targeting Windows Containers to Compromise Cloud Environments

In March 2021, I uncovered the first known malware targeting Windows containers, a development that is not surprising given the massive surge in cloud adoption over the past few years. I named the malware Siloscape (sounds like silo escape) because Read More …

TeamTNT Targets Kubernetes, Nearly 50,000 IPs Compromised in Worm-like Attack

Kubernetes is the most widely adopted container orchestration platform for automating the deployment, scaling, and management of containerized applications. Unfortunately, like any widely used application, it makes for an attractive target for threat actors as they are often misconfigured, especially Read More …

Kubernetes Vulnerability Puts Clusters at Risk of Takeover (CVE-2020-8558)

A security issue assigned CVE-2020-8558 was recently discovered in the kube-proxy, a networking component running on Kubernetes nodes. The issue exposed internal services of Kubernetes nodes, often run without authentication. On certain Kubernetes deployments, this could have exposed the api-server, Read More …