Kubernetes Pod Logs Must Be Owned and Group Owned By Root and have permissions 755

Description

All logs must be owned by root user and group and have permissions 755. By default, the path for the Kubernetes pod logs is

/var/log/pods/

If any of the files have incorrect permissions or ownerhship, change the permissions and ownership of files located under "/var/log/pods" to protect from unauthorized access. 1. Execute the following to set the output of pods readable only by the owner: for node in $(oc get node -oname); do oc debug $node -- chroot /host /bin/bash -c 'echo -n "$HOSTNAME "; find /var/log/pods/ -type f \( -perm /022 -o -perm /044 \) | xargs -r chmod 600' 2>/dev/null; done 2. Execute the following to set the group and group-ownership to root for files that store the output of pods: for node in $(oc get node -oname); do oc debug $node -- chroot /host /bin/bash -c 'echo -n "$HOSTNAME "; find /var/log/pods/ -type f \! -user 0 | xargs -r chown root:root' 2>/dev/null; done

Rationale

Pod log files may contain sensitive information such as application data, user credentials, or system configurations. Unauthorized access to these log files can expose sensitive data to malicious actors. By setting owner permissions, OpenShift ensures that only authorized users or processes with the necessary privileges can access the pod log files, preserving the confidentiality of the logged information.