Security Bulletin
Summary
Red Hat OpenShift on IBM Cloud is affected by a security vulnerability in CRI-O that could allow a remote authenticated attacker to bypass security restrictions, caused by improper sysctls validation.
Vulnerability Details
CVEID: CVE-2022-0532
Description: CRI-O could allow a remote authenticated attacker to bypass security restrictions, caused by improper sysctls validation. By creating a pod with a "hostIPC" and "hostNetwork" kernel namespace, an attacker could exploit this vulnerability to apply sysctls from the list of "safe" sysctls for the cluster [0] to the host.
CVSS Base Score: 7.5
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/219769 for more information
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
Affected Products and Versions
Remediation/Fixes
Updates for Red Hat OpenShift on IBM Cloud cluster worker nodes at version 4.8 or later are available that fix this vulnerability. Customers must update worker nodes created before the fix was available to address the vulnerability. See updating worker nodes for details on updating worker nodes. To verify your cluster worker nodes have been updated, use the following IBM Cloud CLI command to confirm the currently running versions:
ibmcloud oc workers --cluster <cluster name or ID>
If the versions are at the following patch level or later, the cluster worker nodes have the fix:
4.9.25_1532_openshift
4.8.35_1550_openshift
Customers running Red Hat OpenShift on IBM Cloud clusters at version 4.6 or earlier must create a new cluster and deploy their apps to the new cluster.
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References
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
28 February 2023
UID
ibm16842157