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CIS Red Hat Enterprise Linux 7 Benchmark for Level 1 - Server

Rules and Groups employed by this XCCDF Profile

  • Set the GNOME3 Login Warning Banner Text

    In the default graphical environment, configuring the login warning banner text in the GNOME Display Manager's login screen can be configured on th...
    Rule Medium Severity
  • Protect Accounts by Configuring PAM

    PAM, or Pluggable Authentication Modules, is a system which implements modular authentication for Linux programs. PAM provides a flexible and confi...
    Group
  • Install pam_pwquality Package

    The libpwquality package can be installed with the following command:
    $ sudo yum install libpwquality
    Rule Medium Severity
  • Set Lockouts for Failed Password Attempts

    The <code>pam_faillock</code> PAM module provides the capability to lock out user accounts after a number of failed login attempts. Its documentati...
    Group
  • Limit Password Reuse: password-auth

    Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_pwhistory</code>...
    Rule Medium Severity
  • Limit Password Reuse: system-auth

    Do not allow users to reuse recent passwords. This can be accomplished by using the <code>remember</code> option for the <code>pam_pwhistory</code>...
    Rule Medium Severity
  • Lock Accounts After Failed Password Attempts

    This rule configures the system to lock out accounts after a number of incorrect login attempts using <code>pam_faillock.so</code>. pam_faillock.so...
    Rule Medium Severity
  • Set Lockout Time for Failed Password Attempts

    This rule configures the system to lock out accounts during a specified time period after a number of incorrect login attempts using <code>pam_fail...
    Rule Medium Severity
  • Set Password Quality Requirements

    The default <code>pam_pwquality</code> PAM module provides strength checking for passwords. It performs a number of checks, such as making sure pas...
    Group
  • Set Password Quality Requirements with pam_pwquality

    The <code>pam_pwquality</code> PAM module can be configured to meet requirements for a variety of policies. <br><br> For example, to configure <cod...
    Group
  • Ensure PAM Enforces Password Requirements - Minimum Different Characters

    The pam_pwquality module's <code>difok</code> parameter sets the number of characters in a password that must not be present in and old password du...
    Rule Medium Severity
  • Set Password Maximum Consecutive Repeating Characters

    The pam_pwquality module's <code>maxrepeat</code> parameter controls requirements for consecutive repeating characters. When set to a positive numb...
    Rule Medium Severity
  • Ensure PAM Enforces Password Requirements - Minimum Different Categories

    The pam_pwquality module's <code>minclass</code> parameter controls requirements for usage of different character classes, or types, of character t...
    Rule Medium Severity
  • Ensure PAM Enforces Password Requirements - Minimum Length

    The pam_pwquality module's <code>minlen</code> parameter controls requirements for minimum characters required in a password. Add <code>minlen=<xcc...
    Rule Medium Severity
  • Set Password Hashing Algorithm

    The system's default algorithm for storing password hashes in /etc/shadow is SHA-512. This can be configured in several locations.
    Group
  • Set Password Hashing Algorithm in /etc/libuser.conf

    In <code>/etc/libuser.conf</code>, add or correct the following line in its <code>[defaults]</code> section to ensure the system will use the SHA-5...
    Rule Medium Severity
  • Set Password Hashing Algorithm in /etc/login.defs

    In <code>/etc/login.defs</code>, add or correct the following line to ensure the system will use <xccdf-1.2:sub idref="xccdf_org.ssgproject.content...
    Rule Medium Severity
  • Set PAM''s Password Hashing Algorithm - password-auth

    The PAM system service can be configured to only store encrypted representations of passwords. In <code>/etc/pam.d/password-auth</code>, the <code>...
    Rule Medium Severity
  • Set PAM''s Password Hashing Algorithm

    The PAM system service can be configured to only store encrypted representations of passwords. In "/etc/pam.d/system-auth", the <code>password</cod...
    Rule Medium Severity
  • Protect Physical Console Access

    It is impossible to fully protect a system from an attacker with physical access, so securing the space in which the system is located should be co...
    Group
  • Require Authentication for Emergency Systemd Target

    Emergency mode is intended as a system recovery method, providing a single user root access to the system during a failed boot sequence. <br><br> B...
    Rule Medium Severity
  • Require Authentication for Single User Mode

    Single-user mode is intended as a system recovery method, providing a single user root access to the system by providing a boot option at startup. ...
    Rule Medium Severity
  • Protect Accounts by Restricting Password-Based Login

    Conventionally, Unix shell accounts are accessed by providing a username and password to a login program, which tests these values for correctness ...
    Group
  • Ensure All Accounts on the System Have Unique User IDs

    Change user IDs (UIDs), or delete accounts, so each has a unique name.
    Rule Medium Severity
  • Ensure All Groups on the System Have Unique Group ID

    Change the group name or delete groups, so each has a unique id.
    Rule Medium Severity
  • Ensure All Groups on the System Have Unique Group Names

    Change the group name or delete groups, so each has a unique name.
    Rule Medium Severity
  • Set Account Expiration Parameters

    Accounts can be configured to be automatically disabled after a certain time period, meaning that they will require administrator interaction to be...
    Group
  • Set Account Expiration Following Inactivity

    To specify the number of days after a password expires (which signifies inactivity) until an account is permanently disabled, add or correct the fo...
    Rule Medium Severity
  • Ensure All Accounts on the System Have Unique Names

    Ensure accounts on the system have unique names. To ensure all accounts have unique names, run the following command: <pre>$ sudo getent passwd | ...
    Rule Medium Severity
  • Set Password Expiration Parameters

    The file <code>/etc/login.defs</code> controls several password-related settings. Programs such as <code>passwd</code>, <code>su</code>, and <code>...
    Group
  • Set Password Maximum Age

    To specify password maximum age for new accounts, edit the file <code>/etc/login.defs</code> and add or correct the following line: <pre>PASS_MAX_D...
    Rule Medium Severity
  • Set Existing Passwords Maximum Age

    Configure non-compliant accounts to enforce a <xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_accounts_maximum_age_login_defs" use="le...
    Rule Medium Severity
  • Set Existing Passwords Warning Age

    To configure how many days prior to password expiration that a warning will be issued to users, run the command: <pre>$ sudo chage --warndays <xccd...
    Rule Medium Severity
  • Set Password Warning Age

    To specify how many days prior to password expiration that a warning will be issued to users, edit the file <code>/etc/login.defs</code> and add or...
    Rule Medium Severity
  • Set existing passwords a period of inactivity before they been locked

    Configure user accounts that have been inactive for over a given period of time to be automatically disabled by running the following command: <pre...
    Rule Medium Severity
  • Verify Proper Storage and Existence of Password Hashes

    By default, password hashes for local accounts are stored in the second field (colon-separated) in <code>/etc/shadow</code>. This file should be re...
    Group
  • Verify All Account Password Hashes are Shadowed

    If any password hashes are stored in <code>/etc/passwd</code> (in the second field, instead of an <code>x</code> or <code>*</code>), the cause of t...
    Rule Medium Severity
  • Ensure all users last password change date is in the past

    All users should have a password change date in the past.
    Rule Medium Severity
  • All GIDs referenced in /etc/passwd must be defined in /etc/group

    Add a group to the system for each GID referenced without a corresponding group.
    Rule Low Severity
  • Prevent Login to Accounts With Empty Password

    If an account is configured for password authentication but does not have an assigned password, it may be possible to log into the account without ...
    Rule High Severity
  • Ensure There Are No Accounts With Blank or Null Passwords

    Check the "/etc/shadow" file for blank passwords with the following command: <pre>$ sudo awk -F: '!$2 {print $1}' /etc/shadow</pre> If the command ...
    Rule High Severity
  • Verify No .forward Files Exist

    The .forward file specifies an email address to forward the user's mail to.
    Rule Medium Severity
  • Restrict Root Logins

    Direct root logins should be allowed only for emergency use. In normal situations, the administrator should access the system via a unique unprivil...
    Group
  • Verify Only Root Has UID 0

    If any account other than root has a UID of 0, this misconfiguration should be investigated and the accounts other than root should be removed or h...
    Rule High Severity
  • Verify Root Has A Primary GID 0

    The root user should have a primary group of 0.
    Rule High Severity
  • Ensure that System Accounts Are Locked

    Some accounts are not associated with a human user of the system, and exist to perform some administrative functions. An attacker should not be abl...
    Rule Medium Severity
  • Ensure that System Accounts Do Not Run a Shell Upon Login

    Some accounts are not associated with a human user of the system, and exist to perform some administrative functions. Should an attacker be able to...
    Rule Medium Severity
  • Secure Session Configuration Files for Login Accounts

    When a user logs into a Unix account, the system configures the user's session by reading a number of files. Many of these files are located in the...
    Group
  • Set Interactive Session Timeout

    Setting the <code>TMOUT</code> option in <code>/etc/profile</code> ensures that all user sessions will terminate based on inactivity. The value of ...
    Rule Medium Severity
  • User Initialization Files Must Be Group-Owned By The Primary Group

    Change the group owner of interactive users files to the group found in <pre>/etc/passwd</pre> for the user. To change the group owner of a local i...
    Rule Medium Severity

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