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Guide to the Secure Configuration of Debian 12

Rules, Groups, and Values defined within the XCCDF Benchmark

  • dcredit

    Minimum number of digits in password
    Value
    Show

  • lcredit

    Minimum number of lower case in password
    Value
    Show

  • minclass

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

  • minlen

    Minimum number of characters in password
    Value
    Show

  • ocredit

    Minimum number of other (special characters) in password
    Value
    Show

  • retry

    Number of retry attempts before erroring out
    Value
    Show

  • ucredit

    Minimum number of upper case in password
    Value
    Show

  • 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
    Show

  • 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
    Show

  • Login timeout for idle sessions

    Specify duration of allowed idle time.
    Value
    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 ...
    Group
    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 | ...
    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 in...
    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 re...
    Group
    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 t...
    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

  • 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 ...
    Rule High 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 ma...
    Rule Medium Severity
    Show

  • Enable Execute Disable (XD) or No Execute (NX) Support on x86 Systems

    Recent processors in the x86 family support the ability to prevent code execution on a per memory page basis. Generically and on AMD processors, th...
    Group
    Show

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