Kubernetes | Breaking Cybersecurity News | The Hacker News

A newly disclosed security vulnerability in the Kubernetes container engine CRI-O called  cr8escape  could be exploited by an attacker to break out of containers and obtain root access to the host. "Invocation of CVE-2022-0811 can allow an attacker to perform a variety of actions on objectives, including execution of malware, exfiltration of data, and lateral movement across pods," CrowdStrike researchers John Walker and Manoj Ahuje  said  in an analysis published this week. A lightweight alternative to Docker,  CRI-O  is a  container runtime  implementation of the Kubernetes Container Runtime Interface (CRI) that's used to pull container images from registries and launch an Open Container Initiative ( OCI )-compatible runtime such as runC to spawn and run container processes. The vulnerability is rated 8.8 on the CVSS vulnerability scoring system and affects CRI-O versions 1.19 and later. Following responsible disclosure, patches have been r...

Users of the Argo continuous deployment (CD) tool for Kubernetes are being urged to push through updates after a zero-day vulnerability was found that could allow an attacker to extract sensitive information such as passwords and API keys. The flaw, tagged as  CVE-2022-24348  (CVSS score: 7.7), affects all versions and has been addressed in versions 2.3.0, 2.2.4, and 2.1.9. Cloud security firm Apiiro has been credited with discovering and reporting the bug on January 30, 2022s. Continuous deployment, also called continuous delivery, refers to a process that automatically deploys all code changes to the testing and/or production environment after they are tested and merged to a shared repository. Argo CD is officially used by  191 organizations , including Alibaba Group, BMW Group, Deloitte, Gojek, IBM, Intuit, LexisNexis, Red Hat, Skyscanner, Swisscom, and Ticketmaster. The path-traversal vulnerability "allows malicious actors to load a Kubernetes  Helm Chart Y...

2021 was a year peppered by cyberattacks, with numerous data breaches happening. Not only that, but ransomware has also become a prominent player in the hackers' world. Now, more than ever, it's important for enterprises to step up cybersecurity measures. They can do this through several pieces of technology, such as an open-source security platform like Wazuh .  Wazuh is a free and open source security platform that unifies XDR and SIEM capabilities, which not only enables companies to detect sophisticated threats, but can also help immensely in preventing data breaches and leaks from happening. As a result, it can save businesses from costly fixes that can ultimately end in their closure. It is also possible to integrate Wazuh with a number of external services and tools. Some of them are VirusTotal, YARA, Amazon Macie, Slack, and Fortigate Firewall. Consequently, companies can improve their security against hackers from penetrating their networks. What's great abou...

If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk.  A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full ownership of them.  All the guest user needs are the permissions to create subscriptions in their home tenant, and an invitation as a guest user into an external tenant. Once inside, the guest user can create subscriptions in their home tenant, transfer them into the external tenant, and retain full ownership rights. This stealthy privilege escalation tactic allows a guest user to gain a privileged foothold in an environment where they should only have limited access. Many organizations treat guest accounts as low-risk based on their temporary, limited access, but this behavior, which works as designed, opens the door to known attack paths and lateral movement within the resource t...

Cybersecurity researchers on Tuesday disclosed a new large-scale campaign targeting Kubeflow deployments to run malicious cryptocurrency mining containers. The campaign involved deploying  TensorFlow  pods on Kubernetes clusters, with the pods running legitimate  TensorFlow images  from the official Docker Hub account. However, the container images were configured to execute rogue commands that mine cryptocurrencies. Microsoft said the deployments witnessed an uptick towards the end of May. Kubeflow  is an open-source machine learning platform designed to deploy machine learning workflows on  Kubernetes , an orchestration service used for managing and scaling containerized workloads across a cluster of machines. The deployment, in itself, was achieved by taking advantage of Kubeflow, which exposes its UI functionality via a dashboard that is deployed in the cluster. In the attack observed by Microsoft, the adversaries used the centralized dashboard as ...

Security researchers have discovered the first known malware, dubbed " Siloscope ," targeting Windows Server containers to infect Kubernetes clusters in cloud environments. "Siloscape is heavily obfuscated malware targeting Kubernetes clusters through Windows containers,"  said  Unit 42 researcher Daniel Prizmant. "Its main purpose is to open a backdoor into poorly configured Kubernetes clusters in order to run malicious containers such as, but not limited to, cryptojackers." Siloscape, first detected in March 2021, is characterized by several techniques, including targeting common cloud applications such as web servers to gain an initial foothold via known vulnerabilities, following which it leverages Windows container escape techniques to break out of the confines of the container and gain remote code execution on the underlying node. A container is an  isolated, lightweight silo  for running an application on the host operating system. The malware...

A serious security vulnerability has been discovered in the core runC container code that affects several open-source container management systems, potentially allowing attackers to escape Linux container and obtain unauthorized, root-level access to the host operating system. The vulnerability, identified as  CVE-2019-5736 , was discovered by open source security researchers Adam Iwaniuk and Borys Popławski and publicly disclosed by Aleksa Sarai, a senior software engineer and runC maintainer at SUSE Linux GmbH on Monday. The flaw resides in runC—a lightweight low-level command-line tool for spawning and running containers, an operating-system-level virtualization method for running multiple isolated systems on a host using a single kernel. Originally created by Docker, runC is the default container run-time for Docker, Kubernetes, ContainerD, CRI-O, and other container-dependent programs, and is widely being used by major cloud hosting and server providers. runC Cont...