Skip to content
Log In

Guide to the Secure Configuration of Fedora

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Configure the tmux lock session key binding

    To set a key binding for the screen locking in <code>tmux</code> terminal multiplexer, the <code>session-lock</code> command must be bound to a key. Add the following line to <code>/etc/tmux.conf</...
    Rule Low Severity
    Show

  • Prevent user from disabling the screen lock

    The tmux terminal multiplexer is used to implement automatic session locking. It should not be listed in /etc/shells.
    Rule Low Severity
    Show

  • Hardware Tokens for Authentication

    The use of hardware tokens such as smart cards for system login provides stronger, two-factor authentication than using a username and password. In Red Hat Enterprise Linux servers and workstation...
    Group
    Show

  • OpenSC Smart Card Drivers

    Choose the Smart Card Driver in use by your organization. <br>For DoD, choose the <code>cac</code> driver. <br>If your driver is not listed and you don't want to use the <code>default</code> driver...
    Value
    Show

  • Install the pcsc-lite package

    The pcsc-lite package can be installed with the following command: 
    $ sudo dnf install pcsc-lite
    Rule Medium Severity
    Show

  • Install Smart Card Packages For Multifactor Authentication

    Configure the operating system to implement multifactor authentication by installing the required package with the following command: The <code>openssl-pkcs11</code> package can be installed with ...
    Rule Medium Severity
    Show

  • Enable the pcscd Service

    The pcscd service can be enabled with the following command: 
    $ sudo systemctl enable pcscd.service
    Rule Medium Severity
    Show

  • Configure opensc Smart Card Drivers

    The OpenSC smart card tool can auto-detect smart card drivers; however, setting the smart card drivers in use by your organization helps to prevent users from using unauthorized smart cards. The de...
    Rule Medium Severity
    Show

  • Enable Smart Card Login

    To enable smart card authentication, consult the documentation at: <ul> </ul> For guidance on enabling SSH to authenticate against a Common Access Card (CAC), consult documentation at: <ul><li><...
    Rule Medium Severity
    Show

  • 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 using the <code>/etc/passwd</code> and <code>/etc/...
    Group
    Show

  • Accounts Authorized Local Users on the Operating System

    List the user accounts that are authorized locally on the operating system. This list includes both users requried by the operating system and by the installed applications. Depending on the Operat...
    Value
    Show

  • 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
    Show

  • Only Authorized Local User Accounts Exist on Operating System

    Enterprise Application tends to use the server or virtual machine exclusively. Besides the default operating system user, there should be only authorized local users required by the installed softw...
    Rule Medium Severity
    Show

  • 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
    Show

  • 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
    Show

  • 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
    Show

  • Assign Expiration Date to Emergency Accounts

    Emergency accounts are privileged accounts established in response to crisis situations where the need for rapid account activation is required. In the event emergency accounts are required, config...
    Rule Medium Severity
    Show

  • Assign Expiration Date to Temporary Accounts

    Temporary accounts are established as part of normal account activation procedures when there is a need for short-term accounts. In the event temporary accounts are required, configure the system t...
    Rule Medium Severity
    Show

  • 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 | awk -F: '{ print $1}' | uniq -d</pre> If a usernam...
    Rule Medium Severity
    Show

  • 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 integrate with an existing enterprise user managemen...
    Rule Medium Severity
    Show

  • maximum password age

    Maximum age of password in days
    Value
    Show

  • minimum password age

    Minimum age of password in days
    Value
    Show

  • minimum password length

    Minimum number of characters in password
    Value
    Show

  • warning days before password expires

    The number of days' warning given before a password expires.
    Value
    Show

  • 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_DAYS <xccdf-1.2:sub idref="xccdf_org.ssgproject.con...
    Rule Medium Severity
    Show

  • 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_DAYS <xccdf-1.2:sub idref="xccdf_org.ssgproject.con...
    Rule Medium Severity
    Show

  • 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>PASS_MIN_LEN <xccdf-1.2:sub idref="xccdf_org.ssgproj...
    Rule Medium Severity
    Show

  • 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="legacy"></xccdf-1.2:sub>-day maximum password lifeti...
    Rule Medium Severity
    Show

  • Ensure the default plugins for the audit dispatcher are Installed

    The audit-audispd-plugins package should be installed.
    Rule Medium Severity
    Show

  • 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 readable only by processes running with root credent...
    Group
    Show

  • Password Hashing algorithm

    Specify the number of rounds for the system password encryption algorithm. Defines the value set in /etc/pam.d/system-auth and /etc/pam.d/password-auth
    Value
    Show

  • 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 this misconfiguration should be investigated. The a...
    Rule Medium Severity
    Show

  • 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 cryptographic hash. Check that the interactive user account ...
    Rule Medium Severity
    Show

  • 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
    Show

  • 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>pam_unix</code> PAM module. <br> <br> In f...
    Rule Medium Severity
    Show

  • 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
    Show

  • 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 authentication. Remove any instances of the <code>...
    Rule High Severity
    Show

  • Ensure the audit Subsystem is Installed

    The audit package should be installed.
    Rule Medium Severity
    Show

  • Ensure there are no legacy + NIS entries in /etc/group

    The + character in /etc/group file marks a place where entries from a network information service (NIS) should be directly inserted.
    Rule Medium Severity
    Show

  • Ensure there are no legacy + NIS entries in /etc/passwd

    The + character in /etc/passwd file marks a place where entries from a network information service (NIS) should be directly inserted.
    Rule Medium Severity
    Show

  • Ensure there are no legacy + NIS entries in /etc/shadow

    The + character in /etc/shadow file marks a place where entries from a network information service (NIS) should be directly inserted.
    Rule Medium Severity
    Show

  • 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 may contain unencrypted passwords to remote FTP serv...
    Rule Medium Severity
    Show

  • 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 unprivileged account, and then use <code>su</code> or <cod...
    Group
    Show

  • 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 have their UID changed. <br> If the account is asso...
    Rule High Severity
    Show

  • Verify Root Has A Primary GID 0

    The root user should have a primary group of 0.
    Rule High Severity
    Show

  • Restrict Web Browser Use for Administrative Accounts

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

  • Restrict Serial Port Root Logins

    To restrict root logins on serial ports, ensure lines of this form do not appear in /etc/securetty: 
    ttyS0
ttyS1
    Rule Medium Severity
    Show

  • Root Path Must Be Vendor Default

    Assuming root shell is bash, edit the following files: <pre>~/.profile</pre> <pre>~/.bashrc</pre> Change any <code>PATH</code> variables to the vendor default for root and remove any empty...
    Rule Unknown Severity
    Show

  • Restrict Virtual Console Root Logins

    To restrict root logins through the (deprecated) virtual console devices, ensure lines of this form do not appear in /etc/securetty: 
    vc/1
vc/2
vc/3
vc/4
    Rule Medium Severity
    Show

  • Enforce usage of pam_wheel for su authentication

    To ensure that only users who are members of the <code>wheel</code> group can run commands with altered privileges through the <code>su</code> command, make sure that the following line exists in t...
    Rule Medium Severity
    Show

Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

Capacity
Modules