Red Hat OpenShift Container Platform 4.12 STIG

Red Hat OpenShift Container Platform 4.12 Security Technical Implementation Guide

The Red Hat OpenShift Container Platform 4.12 Security Technical Implementation Guide (V2 R2) has 83 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V2 · R2

CurrentPublished Thu Jan 30 2025 What changed in V2R2

Open Shift must automatically audit account removal actions.

Red Hat OpenShift Container Platform 4.12 Security Technical Implementation Guide

Assessment Title

Rule Text

Open Shift must automatically audit account removal actions.

Description

Discussion Text

When application accounts are removed, user accessibility is affected. Once an attacker establishes access to an application, the attacker often attempts to remove authorized accounts to disrupt services or prevent the implementation of countermeasures. Auditing account removal actions provides logging that can be used for forensic purposes.

To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/audit mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-257512

Rule

SV-257512r960786_rule

Severity

medium

Rule Version

CNTR-OS-000080

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

Verify the audit rules capture the execution of setuid and setgid binaries by executing the following:
 
for node in $(oc get node -oname); do oc debug $node -- chroot /host /bin/bash -c 'echo -n "$HOSTNAME "; grep -e key=privileged /etc/audit/audit.rules || echo "not found"' 2>/dev/null; done

If "not found" is printed, this is a finding.

Confirm the following rules exist on each node:

-a always,exit -S all -F path=/usr/libexec/dbus-1/dbus-daemon-launch-helper -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/sbin/grub2-set-bootflag -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/openssh/ssh-keysign -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/chage -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/fusermount3 -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/fusermount -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/gpasswd -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/mount -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/newgrp -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/passwd -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/pkexec -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/sudo -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/su -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/umount -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/bin/write -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/sssd/krb5_child -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/sssd/ldap_child -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/sssd/proxy_child -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/sssd/selinux_child -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/libexec/utempter -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/lib/polkit-1/polkit-agent-helper-1 -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/sbin/mount.nfs -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/sbin/pam_timestamp_check -F auid>=1000 -F auid!=unset -F key=privileged
-a always,exit -S all -F path=/usr/sbin/unix_chkpwd -F auid>=1000 -F auid!=unset -F key=privileged

To find all setuid binaries on the system, execute the following:

for node in $(oc get node -oname); do oc debug $node -- chroot /host /bin/bash -c 'echo -n "$HOSTNAME "; find / -xdev -type f -perm -4000 -o -type f -perm -2000 2>/dev/null'; done

If any setuid binary does not have a corresponding audit rule, this is a finding.

Implementation Procedure

Fix Text

Apply the machine config by executing the following:

for mcpool in $(oc get mcp -oname | sed "s:.*/::" ); do
echo "apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
  name: 75-setuid-setgid-binaries-$mcpool
  labels:
    machineconfiguration.openshift.io/role: $mcpool
spec:
  config:
    ignition:
      version: 3.1.0
    storage:
      files:
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/chage%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_chage_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/fusermount%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_fusermount_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/fusermount3%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_fusermount3_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/gpasswd%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_gpasswd_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/mount%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_mount_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/newgrp%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_newgrp_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/passwd%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_passwd_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/pkexec%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_pkexec_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/su%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_su_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/sudo%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_sudo_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/bin/umount%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_bin_umount_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/lib/polkit-1/polkit-agent-helper-1%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_lib_polkit_helper_execution.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/libexec/dbus-1/dbus-daemon-launch-helper%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-dbus_daemon_launch_helper.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/libexec/sssd/krb5_child%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_libexec_sssd_krb5_child.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/libexec/sssd/ldap_child%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_libexec_sssd_ldap_child.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/libexec/sssd/proxy_child%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_libexec_sssd_proxy_child.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/libexec/sssd/selinux_child%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_libexec_sssd_selinux_child.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/sbin/grub2-set-bootflag%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-grub2_set_bootflag.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/sbin/mount.nfs%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_sbin_mount_nfs.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/sbin/pam_timestamp_check%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_sbin_pam_timestamp_check.rules
        overwrite: true
      - contents:
          source: data:,-a%20always%2Cexit%20-F%20path%3D/usr/sbin/unix_chkpwd%20-F%20auid%3E%3D1000%20-F%20auid%21%3Dunset%20-F%20key%3Dprivileged%0A
        mode: 0644
        path: /etc/audit/rules.d/75-usr_sbin_unix_chkpwd.rules
        overwrite: true
" | oc apply -f -
done

STIG check 8 of 83 in the Red Hat OpenShift Container Platform 4.12 STIG checklist

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