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Guide to the Secure Configuration of SUSE Linux Enterprise 12

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure the Group Used by pam_wheel.so Module Exists on System and is Empty

    Ensure that the group <code><xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_pam_wheel_group_for_su" use="legacy"></xccdf-1.2:sub></cod...
    Rule Medium Severity
    Show

  • Enforce Usage of pam_wheel with Group Parameter for su Authentication

    To ensure that only users who are members of the group set in the <code>group</code> option of <code>pam_wheel.so</code> module can run commands wi...
    Rule Medium Severity
    Show

  • Ensure the libaudit1 package as a part of audit Subsystem is Installed

    The libaudit1 package should be installed.
    Rule Medium Severity
    Show

  • Record Attempts to perform maintenance activities

    The SUSE Linux Enterprise 12 operating system must generate audit records for privileged activities, nonlocal maintenance, diagnostic sessions and ...
    Rule Medium Severity
    Show

  • Record Attempts to Alter Logon and Logout Events

    The audit system already collects login information for all users and root. If the <code>auditd</code> daemon is configured to use the <code>augenr...
    Group
    Show

  • Type of hostname to record the audit event

    Type of hostname to record the audit event
    Value
    Show

  • Restrict unprivileged access to the kernel syslog

    Enforce restrictions on unprivileged users reading the kernel syslog via dmesg(8). The configuration that was used to build kernel is available at...
    Rule Medium Severity
    Show

  • Disable mutable hooks

    Ensure kernel structures associated with LSMs are always mapped as read-only after system boot. The configuration that was used to build kernel is...
    Rule Medium Severity
    Show

  • Ensure Log Files Are Owned By Appropriate Group

    The group-owner of all log files written by <code>rsyslog</code> should be <code>root</code>. These log files are determined by the second part of ...
    Rule Medium Severity
    Show

  • Dectivate firewalld Rules

    Firewalls can be used to separate networks into different zones based on the level of trust the user has decided to place on the devices and traffi...
    Group
    Show

  • NetoworkManager DNS Mode

    This sets how NetworkManager handles DNS. none - NetworkManager will not modify resolv.conf. default - NetworkManager will update /etc/resolv.con...
    Value
    Show

  • Verify that All World-Writable Directories Have Sticky Bits Set

    When the so-called 'sticky bit' is set on a directory, only the owner of a given file may remove that file from the directory. Without the sticky b...
    Rule Medium Severity
    Show

  • Ensure No World-Writable Files Exist

    It is generally a good idea to remove global (other) write access to a file when it is discovered. However, check with documentation for specific a...
    Rule Medium Severity
    Show

  • Ensure All Files Are Owned by a Group

    If any file is not group-owned by a group present in /etc/group, the cause of the lack of group-ownership must be investigated. Following this, tho...
    Rule Medium Severity
    Show

  • Verify Permissions on group File

    To properly set the permissions of /etc/group, run the command: 
    $ sudo chmod 0644 /etc/group
    Rule Medium Severity
    Show

  • Add nosuid Option to /var

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/var</code>. The SUID and SGID permissions should...
    Rule Medium Severity
    Show

  • Disable httpd Service

    The httpd service can be disabled with the following command: 
    $ sudo systemctl mask --now httpd.service
    Rule Unknown Severity
    Show

  • 389 Directory Server

    389 Directory Server is a popular open-source LDAP server for Linux.
    Group
    Show

  • Configure Systemd Timesyncd Servers

    <code>systemd-timesyncd</code> is a daemon that has been added for synchronizing the system clock across the network. The <code>systemd-timesyncd</...
    Rule Medium Severity
    Show

  • Configure Systemd Timesyncd Root Distance Servers

    <code>systemd-timesyncd</code> server configuration should have RootDistanceMaxSec is listed in accordance with local policy. This setting describe...
    Rule Medium Severity
    Show

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