CVE-2023-6476: Cri-o: pods are able to break out of resource confinement on cgroupv2

Description

A flaw was found in CRI-O that involves an experimental annotation leading to a container being unconfined. This may allow a pod to specify and get any amount of memory/cpu, circumventing the kubernetes scheduler and potentially resulting in a denial of service in the node.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.9% · higher than 58% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

RH

Red Hat OpenShift Container Platform 3.11 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat OpenShift Container Platform 4.13 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat OpenShift Container Platform 4.14 · Red Hat

All versions, or not specified · source: vendor

OC

Openshift Container Platform · Redhat

3.11; 4.13; 4.14 · source: NVD