Guide to the Secure Configuration of Oracle Linux 7
Rules, Groups, and Values defined within the XCCDF Benchmark
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Enable the login_console_enabled SELinux Boolean
By default, the SELinux boolean <code>login_console_enabled</code> is enabled. If this setting is disabled, it should be enabled as it allows login...Rule Medium Severity -
Disable the mmap_low_allowed SELinux Boolean
By default, the SELinux boolean <code>mmap_low_allowed</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code...Rule Medium Severity -
Disable the mock_enable_homedirs SELinux Boolean
By default, the SELinux boolean <code>mock_enable_homedirs</code> is disabled. If this setting is enabled, it should be disabled. To disable the <...Rule Medium Severity -
Enable the mount_anyfile SELinux Boolean
By default, the SELinux boolean <code>mount_anyfile</code> is enabled. If this setting is disabled, it should be enabled to allow any file or direc...Rule Medium Severity -
Configure the polyinstantiation_enabled SELinux Boolean
By default, the SELinux boolean <code>polyinstantiation_enabled</code> is disabled. This setting should be configured to <xccdf-1.2:sub idref="xccd...Rule Medium Severity -
Enable the secadm_exec_content SELinux Boolean
By default, the SELinux boolean <code>secadm_exec_content</code> is enabled. If this setting is disabled, it should be enabled. To enable the <cod...Rule Medium Severity -
Disable the secure_mode SELinux Boolean
By default, the SELinux boolean <code>secure_mode</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code>secu...Rule Medium Severity -
Configure the secure_mode_insmod SELinux Boolean
By default, the SELinux boolean <code>secure_mode_insmod</code> is disabled. This setting should be configured to <xccdf-1.2:sub idref="xccdf_org.s...Rule Medium Severity -
Disable the secure_mode_policyload SELinux Boolean
By default, the SELinux boolean <code>secure_mode_policyload</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Configure the selinuxuser_direct_dri_enabled SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_direct_dri_enabled</code> is enabled. If XWindows is not installed or used on the system, this se...Rule Medium Severity -
Disable the selinuxuser_execheap SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_execheap</code> is disabled. When enabled this boolean is enabled it allows selinuxusers to execu...Rule Medium Severity -
Enable the selinuxuser_execmod SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_execmod</code> is enabled. If this setting is disabled, it should be enabled. To enable the <cod...Rule Medium Severity -
Disable the selinuxuser_execstack SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_execstack</code> is enabled. This setting should be disabled as unconfined executables should not...Rule Medium Severity -
Disable the selinuxuser_mysql_connect_enabled SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_mysql_connect_enabled</code> is disabled. If this setting is enabled, it should be disabled. To ...Rule Medium Severity -
Enable the selinuxuser_ping SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_ping</code> is enabled. If this setting is disabled, it should be enabled as it allows confined u...Rule Medium Severity -
Disable the selinuxuser_postgresql_connect_enabled SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_postgresql_connect_enabled</code> is disabled. If this setting is enabled, it should be disabled....Rule Medium Severity -
Disable the selinuxuser_rw_noexattrfile SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_rw_noexattrfile</code> is enabled. This setting should be disabled as users should not be able to...Rule Medium Severity -
Disable the selinuxuser_share_music SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_share_music</code> is disabled. If this setting is enabled, it should be disabled. To disable th...Rule Medium Severity -
Disable the selinuxuser_tcp_server SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_tcp_server</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Disable the selinuxuser_udp_server SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_udp_server</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Disable the selinuxuser_use_ssh_chroot SELinux Boolean
By default, the SELinux boolean <code>selinuxuser_use_ssh_chroot</code> is disabled. If this setting is enabled, it should be disabled. To disable...Rule Medium Severity -
Disable the ssh_chroot_rw_homedirs SELinux Boolean
By default, the SELinux boolean <code>ssh_chroot_rw_homedirs</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Disable Cockpit Management Server
The Cockpit Management Server (<code>cockpit</code>) provides a web based login and management framework. The <code>cockpit</code> service can be ...Rule Medium Severity -
Disable the ssh_sysadm_login SELinux Boolean
By default, the SELinux boolean <code>ssh_sysadm_login</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code...Rule Medium Severity -
Enable the staff_exec_content SELinux Boolean
By default, the SELinux boolean <code>staff_exec_content</code> is enabled. If this setting is disabled, it should be enabled. To enable the <code...Rule Medium Severity -
Enable the sysadm_exec_content SELinux Boolean
By default, the SELinux boolean <code>sysadm_exec_content</code> is enabled. If this setting is disabled, it should be enabled. To enable the <cod...Rule Medium Severity -
Enable the unconfined_login SELinux Boolean
By default, the SELinux boolean <code>unconfined_login</code> is enabled. If this setting is disabled, it should be enabled. To enable the <code>u...Rule Medium Severity -
Disable the use_ecryptfs_home_dirs SELinux Boolean
By default, the SELinux boolean <code>use_ecryptfs_home_dirs</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Enable the user_exec_content SELinux Boolean
By default, the SELinux boolean <code>user_exec_content</code> is enabled. If this setting is disabled, it should be enabled. To enable the <code>...Rule Medium Severity -
Disable the xdm_bind_vnc_tcp_port SELinux Boolean
By default, the SELinux boolean <code>xdm_bind_vnc_tcp_port</code> is disabled. If this setting is enabled, it should be disabled. To disable the ...Rule Medium Severity -
Disable the xdm_exec_bootloader SELinux Boolean
By default, the SELinux boolean <code>xdm_exec_bootloader</code> is disabled. If this setting is enabled, it should be disabled. To disable the <c...Rule Medium Severity -
Disable the xdm_sysadm_login SELinux Boolean
By default, the SELinux boolean <code>xdm_sysadm_login</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code...Rule Medium Severity -
Disable the xdm_write_home SELinux Boolean
By default, the SELinux boolean <code>xdm_write_home</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code>x...Rule Medium Severity -
Disable the xguest_connect_network SELinux Boolean
By default, the SELinux boolean <code>xguest_connect_network</code> is enabled. This setting should be disabled as guest users should not be able t...Rule Medium Severity -
Disable the xguest_exec_content SELinux Boolean
By default, the SELinux boolean <code>xguest_exec_content</code> is enabled. This setting should be disabled as guest users should not be able to r...Rule Medium Severity -
Disable the xguest_mount_media SELinux Boolean
By default, the SELinux boolean <code>xguest_mount_media</code> is enabled. This setting should be disabled as guest users should not be able to mo...Rule Medium Severity -
Disable the xguest_use_bluetooth SELinux Boolean
By default, the SELinux boolean <code>xguest_use_bluetooth</code> is enabled. This setting should be disabled as guests users should not be able to...Rule Medium Severity -
Disable the xserver_clients_write_xshm SELinux Boolean
By default, the SELinux boolean <code>xserver_clients_write_xshm</code> is disabled. If this setting is enabled, it should be disabled. To disable...Rule Medium Severity -
Disable the xserver_execmem SELinux Boolean
By default, the SELinux boolean <code>xserver_execmem</code> is disabled. If this setting is enabled, it should be disabled. To disable the <code>...Rule Medium Severity -
Disable the xserver_object_manager SELinux Boolean
By default, the SELinux boolean <code>xserver_object_manager</code> is disabled. If this setting is enabled, it should be disabled. To disable the...Rule Medium Severity -
Services
The best protection against vulnerable software is running less software. This section describes how to review the software which Oracle Linux 7 in...Group -
Apport Service
The Apport service provides debugging and crash reporting features on Ubuntu distributions.Group -
APT service configuration
The apt service manage the package management and update of the whole system. Its configuration need to be properly defined to ensure efficient sec...Group -
Avahi Server
The Avahi daemon implements the DNS Service Discovery and Multicast DNS protocols, which provide service and host discovery on a network. It allows...Group -
Configure Avahi if Necessary
If your system requires the Avahi daemon, its configuration can be restricted to improve security. The Avahi daemon configuration file is <code>/et...Group -
Disable Avahi Publishing
To prevent Avahi from publishing its records, edit <code>/etc/avahi/avahi-daemon.conf</code> and ensure the following line appears in the <code>[pu...Rule Low Severity -
Disable Avahi Server if Possible
Because the Avahi daemon service keeps an open network port, it is subject to network attacks. Disabling it can reduce the system's vulnerability t...Group -
Disable Avahi Server Software
Theavahi-daemonservice can be disabled with the following command:$ sudo systemctl mask --now avahi-daemon.service
Rule Medium Severity -
Base Services
This section addresses the base services that are installed on a Oracle Linux 7 default installation which are not covered in other sections. Some ...Group -
Uninstall Automatic Bug Reporting Tool (abrt)
The Automatic Bug Reporting Tool (<code>abrt</code>) collects and reports crash data when an application crash is detected. Using a variety of plug...Rule Medium Severity
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