The systems boot loader configuration file(s) must have mode 0600 or less permissive.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-4250	GEN008720	SV-63093r1_rule		Medium

Description
File permissions greater than 0600 on boot loader configuration files could allow an unauthorized user to view or modify sensitive information pertaining to system boot instructions.

STIG	Date
Oracle Linux 5 Security Technical Implementation Guide	2020-02-25

Details

Check Text ( C-51849r1_chk )
Check /boot/grub/grub.conf permissions: # ls -lL /boot/grub/grub.conf If /boot/grub/grub.conf has a mode more permissive than 0600, then this is a finding. For any bootloader other than GRUB which has been authorized, justified and documented for use on the system refer to the vendor documentation for the location of the configuration file. If the bootloader configuration file has a mode more permissive than 0600, this is a finding.

Check Text ( C-51849r1_chk )

Check /boot/grub/grub.conf permissions:

# ls -lL /boot/grub/grub.conf

If /boot/grub/grub.conf has a mode more permissive than 0600, then this is a finding.

For any bootloader other than GRUB which has been authorized, justified and documented for use on the system refer to the vendor documentation for the location of the configuration file. If the bootloader configuration file has a mode more permissive than 0600, this is a finding.

Fix Text (F-53681r1_fix)
Change the mode of the grub.conf file to 0600. # chmod 0600 /boot/grub/grub.conf