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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Password Hashing algorithm

    Specify the number of SHA rounds for the system password encryption algorithm. Defines the value set in <code>/etc/pam.d/system-auth</code> and <co...
    Value
  • 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
  • Verify All Account Password Hashes are Shadowed with SHA512

    Verify the operating system requires the shadow password suite configuration be set to encrypt interactive user passwords using a strong cryptograp...
    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
  • Set number of Password Hashing Rounds - password-auth

    Configure the number or rounds for the password hashing algorithm. This can be accomplished by using the <code>rounds</code> option for the <code>p...
    Rule Medium Severity
  • Set number of Password Hashing Rounds - system-auth

    Configure the number or rounds for the password hashing algorithm. This can be accomplished by using the <code>rounds</code> option for the <code>p...
    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
  • Ensure there are no legacy + NIS entries in /etc/group

    The <code>+</code> character in <code>/etc/group</code> file marks a place where entries from a network information service (NIS) should be directl...
    Rule Medium Severity
  • Ensure there are no legacy + NIS entries in /etc/passwd

    The <code>+</code> character in <code>/etc/passwd</code> file marks a place where entries from a network information service (NIS) should be direct...
    Rule Medium Severity
  • Ensure there are no legacy + NIS entries in /etc/shadow

    The <code>+</code> character in <code>/etc/shadow</code> file marks a place where entries from a network information service (NIS) should be direct...
    Rule Medium Severity
  • Verify No netrc Files Exist

    The <code>.netrc</code> files contain login information used to auto-login into FTP servers and reside in the user's home directory. These files ma...
    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
  • Group Name Used by pam_wheel Group Parameter

    pam_wheel module has a parameter called group, which controls which groups can access the su command. This variable holds the valid value for the p...
    Value
  • 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
  • Direct root Logins Not Allowed

    To further limit access to the <code>root</code> account, administrators can disable root logins at the console by editing the <code>/etc/securetty...
    Rule Medium 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
  • Restrict Web Browser Use for Administrative Accounts

    Enforce policy requiring administrative accounts use web browsers only for local service administration.
    Rule Unknown Severity

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