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Guide to the Secure Configuration of Alibaba Cloud Linux 2

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Screensaver Inactivity timeout

    Choose allowed duration (in seconds) of inactive graphical sessions
    Value
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  • Screensaver Lock Delay

    Choose allowed duration (in seconds) after a screensaver becomes active before displaying an authentication prompt
    Value
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  • GNOME System Settings

    GNOME provides configuration and functionality to a graphical desktop environment that changes grahical configurations or allow a user to perform a...
    Group
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  • SAP Specific Requirement

    SAP (Systems, Applications and Products in Data Processing) is enterprise software to manage business operations and customer relations. The follow...
    Group
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  • Sudo

    <code>Sudo</code>, which stands for "su 'do'", provides the ability to delegate authority to certain users, groups of users, or system administrato...
    Group
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  • Group name dedicated to the use of sudo

    Specify the name of the group that should own /usr/bin/sudo.
    Value
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  • Sudo - logfile value

    Specify the sudo logfile to use. The default value used here matches the example location from CIS, which uses /var/log/sudo.log.
    Value
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  • Sudo - passwd_timeout value

    Defines the number of minutes before the <code>sudo</code> password prompt times out. Defining 0 means no timeout. The default timeout value is 5 m...
    Value
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  • Sudo - timestamp_timeout value

    Defines the number of minutes that can elapse before <code>sudo</code> will ask for a passwd again. If set to a value less than 0 the user's time s...
    Value
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  • Sudo - umask value

    Specify the sudo umask to use. The actual umask value that is used is the union of the user's umask and the sudo umask. The default sudo umask is 0...
    Value
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  • Ensure Privileged Escalated Commands Cannot Execute Other Commands - sudo NOEXEC

    The sudo <code>NOEXEC</code> tag, when specified, prevents user executed commands from executing other commands, like a shell for example. This sho...
    Rule High Severity
    Show

  • Ensure Only Users Logged In To Real tty Can Execute Sudo - sudo requiretty

    The sudo <code>requiretty</code> tag, when specified, will only execute sudo commands from users logged in to a real tty. This should be enabled by...
    Rule Medium Severity
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  • Ensure Only Users Logged In To Real tty Can Execute Sudo - sudo use_pty

    The sudo <code>use_pty</code> tag, when specified, will only execute sudo commands from users logged in to a real tty. This should be enabled by ma...
    Rule Medium Severity
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  • Ensure Sudo Logfile Exists - sudo logfile

    A custom log sudo file can be configured with the 'logfile' tag. This rule configures a sudo custom logfile at the default location suggested by CI...
    Rule Low Severity
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  • maxrepeat

    Maximum Number of Consecutive Repeating Characters in a Password
    Value
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  • Ensure Users Re-Authenticate for Privilege Escalation - sudo !authenticate

    The sudo <code>!authenticate</code> option, when specified, allows a user to execute commands using sudo without having to authenticate. This shoul...
    Rule Medium Severity
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  • Ensure Users Re-Authenticate for Privilege Escalation - sudo NOPASSWD

    The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. This should be dis...
    Rule Medium Severity
    Show

  • Ensure Users Re-Authenticate for Privilege Escalation - sudo

    The sudo <code>NOPASSWD</code> and <code>!authenticate</code> option, when specified, allows a user to execute commands using sudo without having t...
    Rule Medium Severity
    Show

  • Only the VDSM User Can Use sudo NOPASSWD

    The sudo <code>NOPASSWD</code> tag, when specified, allows a user to execute commands using sudo without having to authenticate. Only the <code>vds...
    Rule Medium Severity
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  • Explicit arguments in sudo specifications

    All commands in the sudoers file must strictly specify the arguments allowed to be used for a given user. If the command is supposed to be executed...
    Rule Medium Severity
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  • Don't define allowed commands in sudoers by means of exclusion

    Policies applied by sudo through the sudoers file should not involve negation. Each user specification in the <code>sudoers</code> file contains a...
    Rule Medium Severity
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  • Don't target root user in the sudoers file

    The targeted users of a user specification should be, as much as possible, non privileged users (i.e.: non-root). User specifications have to expl...
    Rule Medium Severity
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  • System Tooling / Utilities

    The following checks evaluate the system for recommended base packages -- both for installation and removal.
    Group
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  • Ensure gnutls-utils is installed

    The gnutls-utils package can be installed with the following command: 
    $ sudo yum install gnutls-utils
    Rule Medium Severity
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  • Ensure nss-tools is installed

    The nss-tools package can be installed with the following command: 
    $ sudo yum install nss-tools
    Rule Medium Severity
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  • minclass

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

    The <code>yum</code> command line tool is used to install and update software packages. The system also provides a graphical software update tool i...
    Group
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  • Ensure gpgcheck Enabled In Main yum Configuration

    The <code>gpgcheck</code> option controls whether RPM packages' signatures are always checked prior to installation. To configure yum to check pack...
    Rule High Severity
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  • Ensure gpgcheck Enabled for All yum Package Repositories

    To ensure signature checking is not disabled for any repos, remove any lines from files in <code>/etc/yum.repos.d</code> of the form: <pre>gpgcheck...
    Rule High Severity
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  • Ensure Software Patches Installed



    NOTE: U.S. Defense systems are required to be patched within 30 days or sooner as local policy dictates.
    Rule Medium Severity
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  • Account and Access Control

    In traditional Unix security, if an attacker gains shell access to a certain login account, they can perform any action or access any file to which...
    Group
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  • Authselect profile

    Specify the authselect profile to select
    Value
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  • Warning Banners for System Accesses

    Each system should expose as little information about itself as possible. <br><br> System banners, which are typically displayed just before a logi...
    Group
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  • Login Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
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  • MotD Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
    Show

  • Remote Login Banner Verbiage

    Enter an appropriate login banner for your organization. Please note that new lines must be expressed by the '\n' character and special characters ...
    Value
    Show

  • 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
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  • Implement a GUI Warning Banner

    In the default graphical environment, users logging directly into the system are greeted with a login screen provided by the GNOME Display Manager ...
    Group
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  • 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
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  • Password Hashing algorithm

    Specify the system default encryption algorithm for encrypting passwords. Defines the value set as ENCRYPT_METHOD in /etc/login.defs.
    Value
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  • remember

    The last n passwords for each user are saved in <code>/etc/security/opasswd</code> in order to force password change history and keep the user from...
    Value
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  • Disallow Configuration to Bypass Password Requirements for Privilege Escalation

    Verify the operating system is not configured to bypass password requirements for privilege escalation. Check the configuration of the "/etc/pam.d/...
    Rule Medium Severity
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  • 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
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  • fail_deny

    Number of failed login attempts before account lockout
    Value
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  • faillock directory

    The directory where the user files with the failure records are kept
    Value
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  • fail_interval

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

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

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

    Delay next login attempt after a failed login
    Value
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  • pwhistory_remember

    Prevent password re-use using password history lookup
    Value
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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.

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Modules