#kubernetes

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-21930: Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u361...

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-21930: Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u361, 8u361-perf, 11.0.18, 17.0.6, 20; Oracle GraalVM Enterprise Edition: 20.3.9, 21.3.5 and 22.3.1. Difficult to exploit vuln...

### Impact A failure in the update logic of Rancher's admission Webhook may lead to the misconfiguration of the Webhook. This component enforces validation rules and security checks before resources are admitted into the Kubernetes cluster. When the Webhook is operating in a degraded state, it no longer validates any resources, which may result in severe privilege escalations and data corruption. The issue only affects users that upgrade from `2.6.x` or `2.7.x` to `2.7.2`. Users that did a fresh install of 2.7.2 (and did not follow an upgrade path) are not affected. The command below can be executed on the `local` cluster to determine whether the cluster is affected by this issue: ```sh $ kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io rancher.cattle.io NAME WEBHOOKS AGE rancher.cattle.io 0 19h ``` If the resulting webhook quantity is `0`, the Rancher instance is affected. ### Patches Patched versions include release `2.7.3` ...

A flaw was found in the Open Cluster Management (OCM) when a user have access to the worker nodes which has the cluster-manager-registration-controller or cluster-manager deployments. A malicious user can take advantage of this and bind the cluster-admin to any service account or using the service account to list all secrets for all kubernetes namespaces, leading into a cluster-level privilege escalation.

Clusternet is a general-purpose system for controlling Kubernetes clusters across different environments. An issue in clusternet prior to version 0.15.2 can be leveraged to lead to a cluster-level privilege escalation. The clusternet has a deployment called `cluster-hub` inside the `clusternet-system` Kubernetes namespace, which runs on worker nodes randomly. The deployment has a service account called `clusternet-hub`, which has a cluster role called `clusternet:hub` via cluster role binding. The `clusternet:hub` cluster role has `"*" verbs of "*.*"` resources. Thus, if a malicious user can access the worker node which runs the clusternet, they can leverage the service account to do malicious actions to critical system resources. For example, the malicious user can leverage the service account to get ALL secrets in the entire cluster, resulting in cluster-level privilege escalation. Version 0.15.2 contains a fix for this issue.

An update for emacs is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-28617: A flaw was found in the Emacs text editor. Processing a specially crafted org-mode code with the function org-babel-execute:latex in ob-latex.el can result in arbitrary command execution.

## Summary: A potential risk in clusternet which can be leveraged to make a cluster-level privilege escalation. ## Detailed analysis: The clusternet has a deployment called cluster-hub inside the clusternet-system Kubernetes namespace, which runs on worker nodes randomly. The deployment has a service account called clusternet-hub, which has a cluster role called clusternet:hub via cluster role binding. The clusternet:hub cluster role has "*" verbs of "*.*" resources. Thus, if a malicious user can access the worker node which runs the clusternet, he/she can leverage the service account to do malicious actions to critical system resources. For example, he/she can leverage the service account to get ALL secrets in the entire cluster, resulting in cluster-level privilege escalation.

A large-scale attack campaign discovered in the wild has been exploiting Kubernetes (K8s) Role-Based Access Control (RBAC) to create backdoors and run cryptocurrency miners. "The attackers also deployed DaemonSets to take over and hijack resources of the K8s clusters they attack," cloud security firm Aqua said in a report shared with The Hacker News. The Israeli company, which dubbed the attack

Recently, Andrew Martin, founder and CEO of ControlPlane, released a report entitled Cloud Native and Kubernetes Security Predictions 2023. These predictions underscore the rapidly evolving landscape of Kubernetes and cloud security, emphasizing the need for organizations to stay informed and adopt comprehensive security solutions to protect their digital assets. In response, Uptycs, the first

Red Hat Security Advisory 2023-1888-01 - Red Hat Advanced Cluster Management for Kubernetes 2.7.3 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs. Issues addressed include denial of service and server-side request forgery vulnerabilities.