secc_os_linux
deprecated
Dieses Modul bietet eine teilweise Abdeckung der SoC Anforderungen für OS unter Linux.
Version information
released Oct 4th 2020
This version is compatible with:
- Puppet Enterprise 2017.2.x, 2017.1.x, 2016.5.x, 2016.4.x
- Puppet >= 4.0.0 < 5.0.0
- RedHat,CentOS
This module has been deprecated by its author since Jun 23rd 2021.
The author has suggested hardening-os_hardening as its replacement.
Start using this module
Documentation
tsystemsmms/secc_os_linux — version 2.0.0 Oct 4th 2020
SecC OS Linux Module
Table of Contents
- Overview
- Module Description - What the module does and why it is useful
- Usage - Configuration options and additional functionality
- Reference - An under-the-hood peek at what the module is doing and how
- Limitations - OS compatibility, etc.
- Development - Guide for contributing to the module
Overview
This module provides coverage of the SoC conditions for Linux.
Module Description
This module adjusts kernel settings in /etc/sysctl.conf, manages services, uninstalls unneeded packages.
Further it manages files relevant for user authentication, including /etc/login.defs and /etc/pam.d/system-auth.
Requirement - Coverage
- SoC Requirements 3.01-1, 3.01-3, 3.37-7 are covered in
packages.ppandservices.pp - SoC Requirements 3.21-1, 3.21-3, 3.21-5, 3.37-6, 3.37-10, 3.37-11, 3.37-12 are covered via
kernel.pp(/etc/sysctl.conf) - SoC Requirement 3.21-4 are partially covered in
secc_sshdand with this module - SoC Requirements 3.01-23, 3.01-24, 3.01-25 are covered via
password.pp,login_defs.pp(password policies -/etc/login.defsand/etc/pam.d/*) andprofile.pp - SoC Requirement 3.21-10 is covered in
profile.pp
Parts
audit.ppconfigures rudimentary logging of bash activities- logging can be redirected via syslog to an external server (facility: local6)
inputrc.ppconfigures bash history search (ctrl+r)kernel.ppmanages/etc/sysctl.confwith mostly network relevant settingslogin_defs.ppcontrols default umask, encryption modes and password min agelogrotate.ppadds rotation for bash_historymodules.ppblacklists some problematic kernel modulesmounts.ppcontrols mount points and sets sensible mount optionspackages.ppuninstalls unneeded softwarepassword.ppconfigures password policy (1 special character, upper and lower case letters, and at least one digit, minimum size of 10 chars)profile.ppcontrols default umask- can be parametrized, but this breaks SoC compliance
rootsh.ppprovides logging of all root acitivites viarootsh(slight duplication to audit logging)services.ppmanages state of detault servicessyslog.ppconfigures logging of:- authpriv /var/log/secure
- local6 /var/log/bash_history (bash audit)
users_group.ppdeletes unneeded groups and user accounts
Usage
- the package
logrotatehas to be installed manually - Configuration of mount points can be deactivated
- Example:
secc_os_linux::secure_mountpoint_tmp: false secc_os_linux::secure_mountpoint_var: false secc_os_linux::secure_mountpoint_var_tmp: false secc_os_linux::secure_mountpoint_home: false - Parameters for mount points can be tuned on a per partition basis
- Example:
secc_os_linux::mount_options_tmp: 'defaults,noexec,nodev,nosuid' secc_os_linux::mount_options_var: 'defaults,noexec,nodev,nosuid' secc_os_linux::mount_options_home: 'defaults,nodev' secc_os_linux::mount_options_var_tmp: 'bind'
Reference
- The requirements come from the technical safety requirements (https://www.telekom.com/psa) of the PSA procedure
Limitations
- This module was tested with CentOS6 and CentOS7
CHANGELOG
[2.0.0] - 2020-10-04
- remove explicit calls to hiera
- rename arguments without ext_
- extended tests for /etc/profile.d/umask.sh
[1.9.0] - 2018-07-23
- remove obsolete files
- add
abrtdto disabled services - add rsyslog.d to managed directories
[1.8.0] - 2018-07-15
- initial public release
[1.5.0]
- make mountpoints configurable
- add teamcity tests
[1.3.26]
- added parameter to disable rsyslog service management
[1.3.0]
- removed the not needed SLES stuff
- moved rsyslog config to own file under /etc/rsyslog.d/
- removed non needed files from module
[1.2.0]
- added CIS compliant mount point configurations
- disabled firewall and usb storage kernel modules
[1.1.0]
- added test kitchen integration (with ruby 2.2.4)
- parameters for xinetd and tftp-servers
[1.0.3]
- fixed alsa-firmware conflict, which occured only once at the first run
[1.0.2]
- added arpwatch to detect arp-spoofing attack (alerting not included)
[1.0.1]
- fix of rootsh integration in /etc/profile to allow non interactive shells to work (like scp)
Dependencies
- puppetlabs/stdlib (>= 3.2.0 < 5.0.0)
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