What happens if the bootloader configuration permissions are too high?

What happens if the bootloader configuration permissions are too high?

Bootloader configuration permissions that are too high may cause some security issues. Because having excessive permissions means that you can perform more operations on the system, including modifying system settings, accessing sensitive data, etc. If the bootloader is maliciously attacked or tampered with, the attacker may use these permissions to conduct deeper attacks.

In order to protect the security of the system, it is recommended to follow the principle of least privilege when configuring the bootloader, that is, only grant the bootloader the minimum privileges required to complete startup. In some cases, the permissions of the bootloader can be restricted by setting an access control list (ACL) or using other security mechanisms.

In addition, some sensitive operations, such as modifying system settings or accessing sensitive data, should be performed with higher-privileged users or administrator rights. This ensures the security and stability of the system.

In short, when configuring the bootloader, you should carefully consider its permission level, ensure that it has the minimum permissions required to complete the startup, and take other security measures to protect the security and stability of the system.

Detect risks

Detection type: bootloader configuration permissions
Risk level: medium risk
Risk description: The following key files or directories have incorrect permissions:/boot/grub/ grub.cfg
Current permissions: 444: root Security permissions: 600: root

solution:

Configure the corresponding permissions for the /boot/grub2/grub.cfg file.

chmod 600 /boot/grub/grub.cfg
chown root /boot/grub/grub.cfg

Warm reminder: This solution can strengthen the protection of the server grub interface and further prevent external intrusions into the server.