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Guide to the Secure Configuration of Oracle Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Ensure /var/log Located On Separate Partition

    System logs are stored in the /var/log directory. Ensure that /var/log has its own partition or logical volume at installation time, or migrate it using LVM.
    Rule Low Severity
    Show

  • Ensure /var/log/audit Located On Separate Partition

    Audit logs are stored in the <code>/var/log/audit</code> directory. Ensure that <code>/var/log/audit</code> has its own partition or logical volume at installation time, or migrate it using LVM. M...
    Rule Low Severity
    Show

  • Ensure /var/tmp Located On Separate Partition

    The /var/tmp directory is a world-writable directory used for temporary file storage. Ensure it has its own partition or logical volume at installation time, or migrate it using LVM.
    Rule Medium Severity
    Show

  • Configure GNOME3 DConf User Profile

    By default, DConf provides a standard user profile. This profile contains a list of DConf configuration databases. The user profile and database always take the highest priority. As such the DConf ...
    Rule High Severity
    Show

  • Configure GNOME Login Screen

    In the default GNOME desktop, the login is displayed after system boot and can display user accounts, allow users to reboot the system, and allow users to login automatically and/or with a guest ac...
    Group
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  • Disable the GNOME3 Login User List

    In the default graphical environment, users logging directly into the system are greeted with a login screen that displays all known users. This functionality should be disabled by setting <code>di...
    Rule Medium Severity
    Show

  • Enable the GNOME3 Login Smartcard Authentication

    In the default graphical environment, smart card authentication can be enabled on the login screen by setting <code>enable-smartcard-authentication</code> to <code>true</code>. <br> <br> T...
    Rule Medium Severity
    Show

  • Set the GNOME3 Login Number of Failures

    In the default graphical environment, the GNOME3 login screen and be configured to restart the authentication process after a configured number of attempts. This can be configured by setting <code>...
    Rule Medium Severity
    Show

  • Disable GDM Automatic Login

    The GNOME Display Manager (GDM) can allow users to automatically login without user interaction or credentials. User should always be required to authenticate themselves to the system that they are...
    Rule High Severity
    Show

  • Disable GDM Guest Login

    The GNOME Display Manager (GDM) can allow users to login without credentials which can be useful for public kiosk scenarios. Allowing users to login without credentials or "guest" account access ha...
    Rule High Severity
    Show

  • Disable XDMCP in GDM

    XDMCP is an unencrypted protocol, and therefore, presents a security risk, see e.g. <a href="https://help.gnome.org/admin/gdm/stable/security.html.en_GB#xdmcpsecurity">XDMCP Gnome docs</a>. To dis...
    Rule High Severity
    Show

  • GNOME Media Settings

    GNOME media settings that apply to the graphical interface.
    Group
    Show

  • Install sudo Package

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

  • Disable GNOME3 Automounting

    The system's default desktop environment, GNOME3, will mount devices and removable media (such as DVDs, CDs and USB flash drives) whenever they are inserted into the system. To disable automount wi...
    Rule Medium Severity
    Show

  • Disable GNOME3 Automount Opening

    The system's default desktop environment, GNOME3, will mount devices and removable media (such as DVDs, CDs and USB flash drives) whenever they are inserted into the system. To disable automount-op...
    Rule Medium Severity
    Show

  • Disable GNOME3 Automount running

    The system's default desktop environment, GNOME3, will mount devices and removable media (such as DVDs, CDs and USB flash drives) whenever they are inserted into the system. To disable autorun-neve...
    Rule Low Severity
    Show

  • Disable All GNOME3 Thumbnailers

    The system's default desktop environment, GNOME3, uses a number of different thumbnailer programs to generate thumbnails for any new or modified content in an opened folder. To disable the executio...
    Rule Unknown Severity
    Show

  • GNOME Network Settings

    GNOME network settings that apply to the graphical interface.
    Group
    Show

  • Disable WIFI Network Connection Creation in GNOME3

    <code>GNOME</code> allows users to create ad-hoc wireless connections through the <code>NetworkManager</code> applet. Wireless connections should be disabled by adding or setting <code>disable-wifi...
    Rule Medium Severity
    Show

  • Disable WIFI Network Notification in GNOME3

    By default, <code>GNOME</code> disables WIFI notification. This should be permanently set so that users do not connect to a wireless network when the system finds one. While useful for mobile devic...
    Rule Medium Severity
    Show

  • GNOME Remote Access Settings

    GNOME remote access settings that apply to the graphical interface.
    Group
    Show

  • Require Credential Prompting for Remote Access in GNOME3

    By default, <code>GNOME</code> does not require credentials when using <code>Vino</code> for remote access. To configure the system to require remote credentials, add or set <code>authentication-me...
    Rule Medium Severity
    Show

  • Require Encryption for Remote Access in GNOME3

    By default, <code>GNOME</code> requires encryption when using <code>Vino</code> for remote access. To prevent remote access encryption from being disabled, add or set <code>require-encryption</code...
    Rule Medium Severity
    Show

  • Screensaver Inactivity timeout

    Choose allowed duration (in seconds) of inactive graphical sessions
    Value
    Show

  • Screensaver Lock Delay

    Choose allowed duration (in seconds) after a screensaver becomes active before displaying an authentication prompt
    Value
    Show

  • Ensure Users Cannot Change GNOME3 Screensaver Idle Activation

    If not already configured, ensure that users cannot change GNOME3 screensaver lock settings by adding <pre>/org/gnome/desktop/screensaver/idle-activation-enabled</pre> to <code>/etc/dconf/db/local....
    Rule Medium Severity
    Show

  • Set GNOME3 Screensaver Inactivity Timeout

    The idle time-out value for inactivity in the GNOME3 desktop is configured via the <code>idle-delay</code> setting must be set under an appropriate configuration file(s) in the <code>/etc/dconf/db/...
    Rule Medium Severity
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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 administrators. When configured for system users and/or groups...
    Group
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  • Enable GNOME3 Screensaver Lock After Idle Period

    To activate locking of the screensaver in the GNOME3 desktop when it is activated, add or set <code>lock-enabled</code> to <code>true</code> in <code>/etc/dconf/db/local.d/00-security-settings</co...
    Rule Medium Severity
    Show

  • Ensure Users Cannot Change GNOME3 Screensaver Lock After Idle Period

    If not already configured, ensure that users cannot change GNOME3 screensaver lock settings by adding <pre>/org/gnome/desktop/screensaver/lock-enabled</pre> to <code>/etc/dconf/db/local.d/locks/00-...
    Rule Medium Severity
    Show

  • Implement Blank Screensaver

    To set the screensaver mode in the GNOME3 desktop to a blank screen, add or set <code>picture-uri</code> to <code>string ''</code> in <code>/etc/dconf/db/local.d/00-security-settings</code>. For...
    Rule Medium Severity
    Show

  • Disable Full User Name on Splash Shield

    By default when the screen is locked, the splash shield will show the user's full name. This should be disabled to prevent casual observers from seeing who has access to the system. This can be dis...
    Rule Medium Severity
    Show

  • Ensure Users Cannot Change GNOME3 Screensaver Settings

    If not already configured, ensure that users cannot change GNOME3 screensaver lock settings by adding <code>/org/gnome/desktop/screensaver/lock-delay</code> to <code>/etc/dconf/db/local.d/locks/00-...
    Rule Medium Severity
    Show

  • Ensure Users Cannot Change GNOME3 Session Idle Settings

    If not already configured, ensure that users cannot change GNOME3 session idle settings by adding <code>/org/gnome/desktop/session/idle-delay</code> to <code>/etc/dconf/db/local.d/locks/00-security...
    Rule Medium Severity
    Show

  • GNOME System Settings

    GNOME provides configuration and functionality to a graphical desktop environment that changes grahical configurations or allow a user to perform actions that users normally would not be able to do...
    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
    Show

  • Disable Geolocation in GNOME3

    <code>GNOME</code> allows the clock and applications to track and access location information. This setting should be disabled as applications should not track system location. To configure the sys...
    Rule Medium Severity
    Show

  • Disable User Administration in GNOME3

    By default, <code>GNOME</code> will allow all users to have some administratrion capability. This should be disabled so that non-administrative users are not making configuration changes. To config...
    Rule High Severity
    Show

  • SAP Specific Requirement

    SAP (Systems, Applications and Products in Data Processing) is enterprise software to manage business operations and customer relations. The following section contains SAP specific requirement that...
    Group
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  • Package glibc Installed

    The package <code>glibc</code> is installed on Linux by default, but the <code>glibc</code> version might not be sufficient for SAP. Please refer to SAP note of your Linux version for the minimum r...
    Rule Medium Severity
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  • Only sidadm and orasid/oracle User Accounts Exist on Operating System

    SAP tends to use the server or virtual machine exclusively. There should be only SAP system users <code>sidadm</code> and <code>orasid</code> that exist on the operating system (or virtual machine)...
    Rule Medium Severity
    Show

  • 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
    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

  • Ensure sudo Ignores Commands In Current Dir - sudo ignore_dot

    The sudo <code>ignore_dot</code> tag, when specified, will ignore the current directory in the PATH environment variable. On Oracle Linux 7, <code>ignore_dot</code> is enabled by default This shoul...
    Rule Medium Severity
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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 should be enabled by making sure that the <code>NOEXE...
    Rule High Severity
    Show

  • Ensure sudo passwd_timeout is appropriate - sudo passwd_timeout

    The sudo <code>passwd_timeout</code> tag sets the amount of time sudo password prompt waits. On Oracle Linux 7, the default <code>passwd_timeout</code> value is 5 minutes. The passwd_timeout shoul...
    Rule Medium 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 making sure that the <code>requiretty</code> tag ...
    Rule Medium Severity
    Show

  • 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 making sure that the <code>use_pty</code> tag exists...
    Rule Medium Severity
    Show

  • 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 CIS, which uses /var/log/sudo.log.
    Rule Low Severity
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  • Ensure a dedicated group owns sudo

    Restrict the execution of privilege escalated commands to a dedicated group of users. Ensure the group owner of /usr/bin/sudo is <xccdf-1.2:sub xmlns:xccdf-1.2="http://checklists.nist.gov/xccdf/1.2...
    Rule Medium Severity
    Show

Node 2

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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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