Guide to the Secure Configuration of Fedora
Rules, Groups, and Values defined within the XCCDF Benchmark
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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, append "nousb" to the kernel line in <code>/etc/default/grub</code> as...Rule Unknown Severity -
Disable Mounting of cramfs
To configure the system to prevent the <code>cramfs</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe.d/cramfs.conf</code>: <pre>install cramfs /bin/fa...Rule Low Severity -
Disable Mounting of freevxfs
To configure the system to prevent the <code>freevxfs</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe.d/freevxfs.conf</code>: <pre>install freevxfs /...Rule Low Severity -
Add nosuid Option to /boot
The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/boot</code>. The SUID and SGID permissions should not be required on the boot partition. Add the <...Rule Medium Severity -
Disable Mounting of udf
To configure the system to prevent the <code>udf</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe.d/udf.conf</code>: <pre>install udf /bin/false</pre>...Rule Low Severity -
Disable Modprobe Loading of USB Storage Driver
To prevent USB storage devices from being used, configure the kernel module loading system to prevent automatic loading of the USB storage driver. To configure the system to prevent the <code>usb-...Rule Medium Severity -
Disable Mounting of vFAT filesystems
To configure the system to prevent the <code>vfat</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe.d/vfat.conf</code>: <pre>install vfat /bin/false</p...Rule Low Severity -
Restrict Partition Mount Options
System partitions can be mounted with certain options that limit what files on those partitions can do. These options are set in the <code>/etc/fstab</code> configuration file, and can be used to m...Group -
Value for hidepid option
The hidepid mount option is applicable to /proc and is used to control who can access the information in /proc/[pid] directories. The option can have one of the following values: 0: Everybody may a...Value -
Removable Partition
This value is used by the checks mount_option_nodev_removable_partitions, mount_option_nodev_removable_partitions, and mount_option_nodev_removable_partitions to ensure that the correct mount optio...Value -
Add noauto Option to /boot
The <code>noauto</code> mount option is used to prevent automatic mounting of th <code>/boot</code> partition. Add the <code>noauto</code> option to the fourth column of <code>/etc/fstab</code> fo...Rule Medium Severity -
Add nodev Option to /boot
The <code>nodev</code> mount option can be used to prevent device files from being created in <code>/boot</code>. Legitimate character and block devices should exist only in the <code>/dev</code> d...Rule Medium Severity -
Add noexec Option to /boot
The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/boot</code>. Add the <code>noexec</code> option to the fourth column of <code>/etc/fstab</code...Rule Medium Severity -
Add nodev Option to /dev/shm
The <code>nodev</code> mount option can be used to prevent creation of device files in <code>/dev/shm</code>. Legitimate character and block devices should not exist within temporary directories li...Rule Medium Severity -
Add noexec Option to /dev/shm
The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/dev/shm</code>. It can be dangerous to allow the execution of binaries from world-writable tem...Rule Medium Severity -
Add nosuid Option to /dev/shm
The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/dev/shm</code>. The SUID and SGID permissions should not be required in these world-writable dire...Rule Medium Severity -
Add grpquota Option to /home
The <code>grpquota</code> mount option allows for the filesystem to have disk quotas configured. Add the <code>grpquota</code> option to the fourth column of <code>/etc/fstab</code> for the line wh...Rule Medium Severity -
Add nodev Option to /home
The <code>nodev</code> mount option can be used to prevent device files from being created in <code>/home</code>. Legitimate character and block devices should exist only in the <code>/dev</code> d...Rule Unknown Severity -
Add noexec Option to /home
The <code>noexec</code> mount option can be used to prevent binaries from being executed out of <code>/home</code>. Add the <code>noexec</code> option to the fourth column of <code>/etc/fstab</code...Rule Medium Severity
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