NIST 800-53 High-Impact Baseline for Red Hat Enterprise Linux CoreOS
Rules and Groups employed by this XCCDF Profile
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Disable SCTP Support
The Stream Control Transmission Protocol (SCTP) is a transport layer protocol, designed to support the idea of message-oriented communication, with...Rule Medium Severity -
Disable TIPC Support
The Transparent Inter-Process Communication (TIPC) protocol is designed to provide communications between nodes in a cluster. To configure the sys...Rule Low Severity -
Wireless Networking
Wireless networking, such as 802.11 (WiFi) and Bluetooth, can present a security risk to sensitive or classified systems and networks. Wireless net...Group -
Disable Wireless Through Software Configuration
If it is impossible to remove the wireless hardware from the device in question, disable as much of it as possible through software. The following ...Group -
Disable Bluetooth Service
The <code>bluetooth</code> service can be disabled with the following manifest: <pre> --- apiVersion: machineconfiguration.openshift.io/v1 kind: M...Rule Medium Severity -
Disable Bluetooth Kernel Module
The kernel's module loading system can be configured to prevent loading of the Bluetooth module. Add the following to the appropriate <code>/etc/mo...Rule Medium Severity -
Disable Kernel cfg80211 Module
To configure the system to prevent the <code>cfg80211</code> kernel module from being loaded, add the following line to the file <code>/etc/modpro...Rule Medium Severity -
Disable Kernel iwlmvm Module
To configure the system to prevent the <code>iwlmvm</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe...Rule Medium Severity -
Disable Kernel iwlwifi Module
To configure the system to prevent the <code>iwlwifi</code> kernel module from being loaded, add the following line to the file <code>/etc/modprob...Rule Medium Severity -
Disable Kernel mac80211 Module
To configure the system to prevent the <code>mac80211</code> kernel module from being loaded, add the following line to the file <code>/etc/modpro...Rule Medium Severity -
Disable WiFi or Bluetooth in BIOS
Some machines that include built-in wireless support offer the ability to disable the device through the BIOS. This is hardware-specific; consult y...Rule Unknown Severity -
Deactivate Wireless Network Interfaces
Deactivating wireless network interfaces should prevent normal usage of the wireless capability. <br><br> Configure the system to disable all wire...Rule Medium Severity -
File Permissions and Masks
Traditional Unix security relies heavily on file and directory permissions to prevent unauthorized users from reading or modifying files to which t...Group -
Verify Permissions on Important Files and Directories
Permissions for many files on a system must be set restrictively to ensure sensitive information is properly protected. This section discusses impo...Group -
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.protecte...Rule Medium Severity -
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...Rule Medium Severity -
Restrict Dynamic Mounting and Unmounting of Filesystems
Linux includes a number of facilities for the automated addition and removal of filesystems on a running system. These facilities may be necessary...Group -
Disable the Automounter
The <code>autofs</code> daemon mounts and unmounts filesystems, such as user home directories shared via NFS, on demand. In addition, autofs can be...Rule Medium Severity -
Disable Booting from USB Devices in Boot Firmware
Configure the system boot firmware (historically called BIOS on PC systems) to disallow booting from USB drives.Rule Unknown Severity -
Disable Kernel Support for USB via Bootloader Configuration
All USB support can be disabled by adding the <code>nousb</code> argument to the kernel's boot loader configuration. To do so, Add the <code>nousb<...Rule Medium Severity
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