Low: Red Hat Security Advisory: OpenShift Container Platform 4.4.12 ose-cloud-credential-operator-container security update

An update for ose-cloud-credential-operator-container is now available for Red Hat OpenShift Container Platform 4.4. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 7 / 8 : OpenShift Container Platform 4.5 (RHSA-2020:2413)

The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2413 advisory. Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or...

Node disk DOS by writing to container /etc/hosts

CVSS Rating: Medium 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/CR:H/IR:H/AR:M The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it...

Moderate: Red Hat Security Advisory: OpenShift Container Platform 4.5 container image security update

An update is now available for Red Hat OpenShift Container Platform 4.5. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

kubernetes: credential leak in kube-controller-manager via error messages in mount failure logs and events for AzureFile and CephFS volumes

A flaw was found in Kubernetes that allows the logging of credentials when mounting AzureFile and CephFS volumes. This flaw allows an attacker to access kubelet logs, read the credentials, and use them to access other services. The highest threat from this vulnerability is to confidentiality...

Moderate: Red Hat Security Advisory: OpenShift Container Platform 4.5 package security update

An update for machine-config-daemon and openshift is now available for Red Hat OpenShift Container Platform 4.5. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, i...

kubernetes: Denial of service in API server via crafted YAML payloads by authorized users

The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML...

kubernetes: node localhost services reachable via martian packets

A flaw was found in Kubernetes that allows attackers on adjacent networks to reach services exposed on localhost ports, previously thought to be unreachable. This flaw allows an attacker to gain privileges or access confidential information for any services listening on localhost ports that are n...

Exploit for Unprotected Alternate Channel in Kubernetes

Overview CVE-2020-8558 is a Kubernetes venerability which was...

Localhost Boundary Bypass

kubernetes is vulnerable to localhost boundary bypass. Due to insecure API Server's default port setting, TCP and UDP services on the nodes which are bound to 127.0.0.1 are reachable by adjacent hosts or by containers running on the same node as the service...

How To Protect Your Kubernetes Cluster with Wallarm – Running in Production Mode – part 3 of 3

The previous two blog articles in this series describe how to set up Wallarm Ingress controller and configure it so that it can properly allow or block traffic from trusted or suspicious/malicious IP addresses. This is essential to the functionality of Wallarm’s Ingress controller but it isn’t...

How To Protect Your Kubernetes Cluster with Wallarm – Running in Production Mode – part 3 of 3

The previous two blog articles in this series describe how to set up Wallarm Ingress controller and configure it so that it can properly allow or block traffic from trusted or suspicious/malicious IP addresses. This is essential to the functionality of Wallarm’s Ingress controller but it isn’t...

kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service

A flaw was found kubernetes. The parsing of YAML manifests by the Kubernetes API server could lead to a denial-of-service attack leaving it vulnerable to an instance of a "billion laughs" attack. The highest threat from this vulnerability is to system availability...

kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service

A flaw was found kubernetes. The parsing of YAML manifests by the Kubernetes API server could lead to a denial-of-service attack leaving it vulnerable to an instance of a "billion laughs" attack. The highest threat from this vulnerability is to system availability...

kubernetes: YAML parsing vulnerable to "Billion Laughs" attack, allowing for remote denial of service

A flaw was found kubernetes. The parsing of YAML manifests by the Kubernetes API server could lead to a denial-of-service attack leaving it vulnerable to an instance of a "billion laughs" attack. The highest threat from this vulnerability is to system availability...

Denial of service due to reference expansion in versions earlier than 4.0

Impact The CBOR library supports optional tags that enable CBOR objects to contain references to objects within them. Versions earlier than 4.0 resolved those references automatically. While this by itself doesn't cause much of a security problem, a denial of service can happen if those reference...

Moderate: Red Hat Bug Fix Advisory: OpenShift Container Platform 4.3.28 packages update

Red Hat OpenShift Container Platform release 4.3.28 is now available with updates to packages and images that fix several bugs. Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This...

RHEL 8 : Red Hat OpenShift Service Mesh 1.0 servicemesh-cni (RHSA-2020:2870)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2870 advisory. Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise OpenShift...

RHEL 8 : Red Hat OpenShift Service Mesh 1.0 servicemesh-prometheus (RHSA-2020:2863)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:2863 advisory. Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise OpenShift...

How To Protect Your Kubernetes Cluster with Wallarm – Configuration and Finetuning – part 2 of 3

Wallarm’s Kubernetes Ingress controller is designed to help protect your Kubernetes cluster against cyberattacks. Its built-in web application firewall WAF is capable of detecting and blocking a wide range of common attacks against Kubernetes deployments. The previous article in this series...