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Guide to the Secure Configuration of OpenEmbedded

Rules, Groups, and Values defined within the XCCDF Benchmark

  • fail_interval

    Interval for counting failed login attempts before account lockout
    Value
  • fail_unlock_time

    Seconds before automatic unlocking or permanently locking after excessive failed logins
    Value
  • tally2_unlock_time

    Seconds before automatic unlocking or permanently locking after excessive failed logins
    Value
  • faildelay_delay

    Delay next login attempt after a failed login
    Value
  • pwhistory_remember

    Prevent password re-use using password history lookup
    Value
  • PAM pwhistory remember - control flag

    'Specify the control flag required for password remember requirement. If multiple values are allowed write them separated by commas as in "required...
    Value
  • tally2

    Number of failed login attempts
    Value
  • Account Lockouts Must Be Logged

    PAM faillock locks an account due to excessive password failures, this event must be logged.
    Rule Medium Severity
  • 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
  • Account Lockouts Must Be Logged

    PAM faillock locks an account due to excessive password failures, this event must be logged.
    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, if using pam_cracklib

    The <code>pam_cracklib</code> PAM module can be configured to meet requirements for a variety of policies. <br><br> For example, to configure <code...
    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
  • dcredit

    Minimum number of digits in password
    Value
  • dictcheck

    Prevent the use of dictionary words for passwords.
    Value
  • difok

    Minimum number of characters not present in old password
    Value
  • lcredit

    Minimum number of lower case in password
    Value
  • maxclassrepeat

    Maximum Number of Consecutive Repeating Characters in a Password From the Same Character Class
    Value
  • maxrepeat

    Maximum Number of Consecutive Repeating Characters in a Password
    Value
  • minclass

    Minimum number of categories of characters that must exist in a password
    Value
  • minlen

    Minimum number of characters in password
    Value
  • 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
  • Ensure PAM Enforces Password Requirements - Authentication Retry Prompts Permitted Per-Session

    To configure the number of retry prompts that are permitted per-session: Edit the <code>pam_pwquality.so</code> statement in <code>/etc/pam.d/sys...
    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 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
  • Login timeout for idle sessions

    Specify duration of allowed idle time.
    Value
  • 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
  • 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
  • number of days after the last login of the user when the user will be locked out

    'This option is specific for the auth or account phase. It specifies the number of days after the last login of the user when the user will be lock...
    Value
  • number of days after a password expires until the account is permanently disabled

    The number of days to wait after a password expires, until the account will be permanently disabled.
    Value
  • 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
  • Use Centralized and Automated Authentication

    Implement an automated system for managing user accounts that minimizes the risk of errors, either intentional or deliberate. This system should in...
    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
  • maximum password age

    Maximum age of password in days
    Value
  • minimum password age

    Minimum age of password in days
    Value
  • minimum password length

    Minimum number of characters in password
    Value
  • warning days before password expires

    The number of days' warning given before a password expires.
    Value
  • 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 Password Minimum Age

    To specify password minimum age for new accounts, edit the file <code>/etc/login.defs</code> and add or correct the following line: <pre>PASS_MIN_D...
    Rule Medium Severity
  • Set Password Minimum Length in login.defs

    To specify password length requirements for new accounts, edit the file <code>/etc/login.defs</code> and add or correct the following line: <pre>PA...
    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 Minimum Age

    Configure non-compliant accounts to enforce a 24 hours/1 day minimum password lifetime by running the following command: <pre>$ sudo chage -m 1 <i>...
    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
  • 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
  • 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

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