Skip to content
Log In

Guide to the Secure Configuration of Oracle Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • System and Software Integrity

    System and software integrity can be gained by installing antivirus, increasing system encryption strength with FIPS, verifying installed software, enabling SELinux, installing an Intrusion Prevent...
    Group
    Show

  • System Settings

    Contains rules that check correct system settings.
    Group
    Show

  • Installing and Maintaining Software

    The following sections contain information on security-relevant choices during the initial operating system installation process and the setup of software updates.
    Group
    Show

  • Prefer to use a 64-bit Operating System when supported

    Prefer installation of 64-bit operating systems when the CPU supports it.
    Rule Medium Severity
    Show

  • Software Integrity Checking

    Both the AIDE (Advanced Intrusion Detection Environment) software and the RPM package management system provide mechanisms for verifying the integrity of installed software. AIDE uses snapshots of ...
    Group
    Show

  • Integrity Scan Notification Email Address

    Specify the email address for designated personnel if baseline configurations are changed in an unauthorized manner.
    Value
    Show

  • Verify Integrity with RPM

    The RPM package management system includes the ability to verify the integrity of installed packages by comparing the installed files with information about the files taken from the package metadat...
    Group
    Show

  • Disable ATM Support

    The Asynchronous Transfer Mode (ATM) is a protocol operating on network, data link, and physical layers, based on virtual circuits and virtual paths. To configure the system to prevent the <code>a...
    Rule Medium Severity
    Show

  • Verify Permissions on /etc/audit/auditd.conf

    To properly set the permissions of /etc/audit/auditd.conf, run the command: 
    $ sudo chmod 0640 /etc/audit/auditd.conf
    Rule Medium Severity
    Show

  • Verify Permissions On /etc/crypttab File

    To properly set the permissions of /etc/crypttab, run the command: 
    $ sudo chmod 0600 /etc/crypttab
    Rule Medium Severity
    Show

  • Ensure All Files Are Owned by a User

    If any files are not owned by a user, then the cause of their lack of ownership should be investigated. Following this, the files should be deleted or assigned to an appropriate user. Locate the m...
    Rule Medium Severity
    Show

  • Enable Kernel Parameter to Enforce DAC on Hardlinks

    To set the runtime status of the <code>fs.protected_hardlinks</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_hardlinks=1</pre> To make sure that the setting ...
    Rule Medium Severity
    Show

  • Enable Kernel Parameter to Enforce DAC on Symlinks

    To set the runtime status of the <code>fs.protected_symlinks</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_symlinks=1</pre> To make sure that the setting is...
    Rule Medium Severity
    Show

  • Verify Group Who Owns /etc/shells File

    To properly set the group owner of /etc/shells, run the command: 
    $ sudo chgrp root /etc/shells
    Rule Medium Severity
    Show

  • Verify User Who Owns shadow File

    To properly set the owner of /etc/shadow, run the command: 
    $ sudo chown root /etc/shadow
    Rule Medium Severity
    Show

  • Verify Who Owns /etc/shells File

    To properly set the owner of /etc/shells, run the command: 
    $ sudo chown root /etc/shells
    Rule Medium Severity
    Show

  • Verify Permissions on /etc/shells File

    To properly set the permissions of /etc/shells, run the command: 
    $ sudo chmod 0644 /etc/shells
    Rule Medium Severity
    Show

  • Verify User Who Owns /var/log/syslog File

    To properly set the owner of /var/log/syslog, run the command: 
    $ sudo chown syslog /var/log/syslog
    Rule Medium Severity
    Show

  • Verify that Shared Library Directories Have Root Group Ownership

    System-wide shared library files, which are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /usr/lib64 </pr...
    Rule Medium Severity
    Show

  • Verify that Shared Library Directories Have Restrictive Permissions

    System-wide shared library directories, which contain are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /...
    Rule Medium Severity
    Show

  • Verify Group Who Owns /etc/sysctl.d Directory

    To properly set the group owner of /etc/sysctl.d, run the command: 
    $ sudo chgrp root /etc/sysctl.d
    Rule Medium Severity
    Show

  • Verify User Who Owns /etc/sysctl.d Directory

    To properly set the owner of /etc/sysctl.d, run the command: 
    $ sudo chown root /etc/sysctl.d
    Rule Medium Severity
    Show

  • Verify Permissions On /etc/sysctl.d Directory

    To properly set the permissions of /etc/sysctl.d, run the command: 
    $ sudo chmod 0755 /etc/sysctl.d
    Rule Medium Severity
    Show

  • Verify that Shared Library Files Have Root Ownership

    System-wide shared library files, which are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /usr/lib64 </pr...
    Rule Medium Severity
    Show

  • Disable storing core dumps

    To set the runtime status of the <code>kernel.core_pattern</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.core_pattern=|/bin/false</pre> To make sure that the sett...
    Rule Medium Severity
    Show

  • faillock directory

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

  • fail_interval

    Interval for counting failed login attempts before account lockout
    Value
    Show

  • Install AIDE

    The aide package can be installed with the following command: 
    $ sudo yum install aide
    Rule Medium Severity
    Show

  • Build and Test AIDE Database

    Run the following command to generate a new database: <pre>$ sudo /usr/sbin/aide --init</pre> By default, the database will be written to the file <code>/var/lib/aide/aide.db.new.gz</code>. Sto...
    Rule Medium Severity
    Show

  • Configure AIDE to Verify the Audit Tools

    The operating system file integrity tool must be configured to protect the integrity of the audit tools.
    Rule Medium Severity
    Show

  • Enable Dracut FIPS Module

    To enable FIPS mode, run the following command: <pre>fips-mode-setup --enable</pre> To enable FIPS, the system requires that the <code>fips</code> module is added in <code>dracut</code> configurati...
    Rule High Severity
    Show

  • Configure AIDE to Use FIPS 140-2 for Validating Hashes

    By default, the <code>sha512</code> option is added to the <code>NORMAL</code> ruleset in AIDE. If using a custom ruleset or the <code>sha512</code> option is missing, add <code>sha512</code> to th...
    Rule Medium Severity
    Show

  • Configure AIDE to Verify Access Control Lists (ACLs)

    By default, the <code>acl</code> option is added to the <code>FIPSR</code> ruleset in AIDE. If using a custom ruleset or the <code>acl</code> option is missing, add <code>acl</code> to the appropri...
    Rule Low Severity
    Show

  • Configure AIDE to Verify Extended Attributes

    By default, the <code>xattrs</code> option is added to the <code>FIPSR</code> ruleset in AIDE. If using a custom ruleset or the <code>xattrs</code> option is missing, add <code>xattrs</code> to the...
    Rule Low Severity
    Show

  • Audit Tools Must Be Group-owned by Root

    Oracle Linux 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user e...
    Rule Medium Severity
    Show

  • Audit Tools Must Be Owned by Root

    Oracle Linux 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user e...
    Rule Medium Severity
    Show

  • Audit Tools Must Have a Mode of 0755 or Less Permissive

    Oracle Linux 8 systems providing tools to interface with audit information will leverage user permissions and roles identifying the user accessing the tools, and the corresponding rights the user e...
    Rule Medium Severity
    Show

  • Ensure '/etc/system-fips' exists

    On a system where FIPS mode is enabled, /etc/system-fips must exist. To enable FIPS mode, run the following command: 
    fips-mode-setup --enable
    Rule High Severity
    Show

  • Set kernel parameter 'crypto.fips_enabled' to 1

    System running in FIPS mode is indicated by kernel parameter <code>'crypto.fips_enabled'</code>. This parameter should be set to <code>1</code> in FIPS mode. To enable FIPS mode, run the following ...
    Rule High Severity
    Show

  • System Cryptographic Policies

    Linux has the capability to centrally configure cryptographic polices. The command <code>update-crypto-policies</code> is used to set the policy applicable for the various cryptographic back-ends, ...
    Group
    Show

  • SSH client RekeyLimit - size

    Specify the size component of the rekey limit. This limit signifies amount of data. After this amount of data is transferred through the connection, the session key is renegotiated. The number is f...
    Value
    Show

  • SSH client RekeyLimit - time

    Specify the time component of the rekey limit. The session key is renegotiated after the defined amount of time passes. The number is followed by units such as H or M for hours or minutes. Note tha...
    Value
    Show

  • The system-provided crypto policies

    Specify the crypto policy for the system.
    Value
    Show

  • Install crypto-policies package

    The crypto-policies package can be installed with the following command: 
    $ sudo yum install crypto-policies
    Rule Medium Severity
    Show

  • Configure BIND to use System Crypto Policy

    Crypto Policies provide a centralized control over crypto algorithms usage of many packages. BIND is supported by crypto policy, but the BIND configuration may be set up to ignore it. To check tha...
    Rule High Severity
    Show

  • Configure Kerberos to use System Crypto Policy

    Crypto Policies provide a centralized control over crypto algorithms usage of many packages. Kerberos is supported by crypto policy, but it's configuration may be set up to ignore it. To check that...
    Rule High Severity
    Show

  • Configure OpenSSL library to use System Crypto Policy

    Crypto Policies provide a centralized control over crypto algorithms usage of many packages. OpenSSL is supported by crypto policy, but the OpenSSL configuration may be set up to ignore it. To chec...
    Rule Medium Severity
    Show

  • Configure SSH to use System Crypto Policy

    Crypto Policies provide a centralized control over crypto algorithms usage of many packages. SSH is supported by crypto policy, but the SSH configuration may be set up to ignore it. To check that C...
    Rule Medium Severity
    Show

  • Harden SSH client Crypto Policy

    Crypto Policies are means of enforcing certain cryptographic settings for selected applications including OpenSSH client. To override the system wide crypto policy for Openssh client, place a file ...
    Rule Medium Severity
    Show

  • Configure SSH Client to Use FIPS 140-2 Validated Ciphers: openssh.config

    Crypto Policies provide a centralized control over crypto algorithms usage of many packages. OpenSSH is supported by system crypto policy, but the OpenSSH configuration may be set up incorrectly. ...
    Rule High 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