Oracle Linux 8 : kubernetes (ELSA-2022-10034)

high Nessus Plugin ID 168277

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-10034 advisory.

- Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
(CVE-2022-3294)

- Users authorized to list or watch one type of namespaced custom resource cluster-wide can read custom resources of a different type in the same API group without authorization. Clusters are impacted by this vulnerability if all of the following are true: 1. There are 2+ CustomResourceDefinitions sharing the same API group 2. Users have cluster-wide list or watch authorization on one of those custom resources. 3. The same users are not authorized to read another custom resource in the same API group. (CVE-2022-3162)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2022-10034.html

Plugin Details

Severity: High

ID: 168277

File Name: oraclelinux_ELSA-2022-10034.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/29/2022

Updated: 3/21/2023

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2022-3294

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:olcne-istio-chart, p-cpe:/a:oracle:linux:olcne-prometheus-chart, p-cpe:/a:oracle:linux:olcne-utils, p-cpe:/a:oracle:linux:olcne-gluster-chart, p-cpe:/a:oracle:linux:olcne-grafana-chart, p-cpe:/a:oracle:linux:olcne-oci-csi-chart, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:olcne-api-server, p-cpe:/a:oracle:linux:olcne-olm-chart, p-cpe:/a:oracle:linux:kubelet, p-cpe:/a:oracle:linux:kubectl, p-cpe:/a:oracle:linux:kubeadm, p-cpe:/a:oracle:linux:olcne-agent, p-cpe:/a:oracle:linux:olcnectl, p-cpe:/a:oracle:linux:olcne-nginx

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 11/29/2022

Vulnerability Publication Date: 11/29/2022

Reference Information

CVE: CVE-2022-3162, CVE-2022-3294