Security Bulletin
Summary
Red Hat OpenShift on IBM Cloud is affected by a security vulnerability in CRI-O that causes memory or disk space exhaustion on the node for anyone with access to the Kubernetes API.
Vulnerability Details
CVEID: CVE-2022-1708
Description: A vulnerability was found in CRI-O that causes memory or disk space exhaustion on the node for anyone with access to the Kube API. The ExecSync request runs commands in a container and logs the output of the command. This output is then read by CRI-O after command execution, and it is read in a manner where the entire file corresponding to the output of the command is read in. Thus, if the output of the command is large it is possible to exhaust the memory or the disk space of the node when CRI-O reads the output of the command. The highest threat from this vulnerability is system availability.
CVSS Base Score: 5.3
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/228431 for more information
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Affected Products and Versions
Red Hat OpenShift on IBM Cloud 4.6-4.6.58_1587_openshift
Remediation/Fixes
Updates for Red Hat OpenShift on IBM Cloud cluster worker nodes at version 4.6 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:
4.10.18_1523_openshift
4.9.38_1543_openshift
4.8.42_1561_openshift
4.7.53_1568_openshift
4.6.59_1589_openshift
Customers running Red Hat OpenShift on IBM Cloud clusters at version 4.4 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:
16 September 2022
UID
ibm16611215