[rc-4.8] Add new CIS hardening controls (#552)#571
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abhinavnagaraj merged 1 commit intorc-4.8from Mar 19, 2026
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* Add new CIS hardening controls with idempotent implementations New CIS controls added: - CIS 5.2.2, 5.2.3, 5.2.4: Sudo hardening (pty, logging, password policies) - CIS 5.4.3.3: Default umask 027 configuration - Service hardening: Mask apport and rpcbind services - CIS 1.5.x: Coredump restrictions via systemd - CIS 2.1.x: NTP time synchronization All new functions use idempotent patterns (file overwrites or grep guards). Preserves all existing main branch hardening including AppArmor, rsyslog, AIDE, kernel hardening, and SSH Level 2 controls. Co-Authored-By: Oz <oz-agent@warp.dev> * Add CUSTOM_KUBEADM_PROVIDER_IMAGE support for custom provider testing Co-Authored-By: Oz <oz-agent@warp.dev> * Remove NTP hardening from CIS controls NTP configuration should be handled externally, not in image hardening. Co-Authored-By: Oz <oz-agent@warp.dev> * Remove CUSTOM_KUBEADM_PROVIDER_IMAGE override No longer needed - using standard provider-kubeadm image. Co-Authored-By: Oz <oz-agent@warp.dev> --------- Co-authored-by: Sumit Mishra <sumitmishra@sumit.mishra's MacBook Pro> Co-authored-by: Oz <oz-agent@warp.dev> (cherry picked from commit 1c4682e)
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