It was found in OpenShift Container Platform 4 that ignition config, served by the Machine Config Server, can be accessed externally from clusters without authentication. The MCS endpoint (port 22623) provides ignition configuration used for bootstrapping Nodes and can include some sensitive data, e.g. registry pull secrets. There are two scenarios where this data can be accessed. The first is on Baremetal, OpenStack, Ovirt, Vsphere and KubeVirt deployments which do not have a separate internal API endpoint and allow access from outside the cluster to port 22623 from the standard OpenShift API Virtual IP address. The second is on cloud deployments when using unsupported network plugins, which do not create iptables rules that prevent to port 22623. In this scenario, the ignition config is exposed to all pods within the cluster and cannot be accessed externally.
References
| Link | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1926568 | Issue Tracking Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
26 Jun 2023, 18:00
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-306 |
12 Apr 2022, 17:34
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 4.3
v3 : 3.7 |
| References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1926568 - Issue Tracking, Mitigation, Vendor Advisory | |
| CPE | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:openshift_machine-config-operator:*:*:*:*:*:*:*:* |
|
| CWE | CWE-287 | |
| First Time |
Redhat openshift Machine-config-operator
Redhat openshift Container Platform Redhat |
01 Apr 2022, 23:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2022-04-01 23:15
Updated : 2023-12-10 14:22
NVD link : CVE-2021-20238
Mitre link : CVE-2021-20238
CVE.ORG link : CVE-2021-20238
JSON object : View
Products Affected
redhat
- openshift_machine-config-operator
- openshift_container_platform