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Verify /boot/grub2/user.cfg Group Ownership

An XCCDF Rule

Description

The file /boot/grub2/user.cfg should be group-owned by the root group to prevent reading or modification of the file. To properly set the group owner of /boot/grub2/user.cfg, run the command:

$ sudo chgrp root /boot/grub2/user.cfg

Rationale

The root group is a highly-privileged group. Furthermore, the group-owner of this file should not have any access privileges anyway. Non-root users who read the boot parameters may be able to identify weaknesses in security upon boot and be able to exploit them.

ID
xccdf_org.ssgproject.content_rule_file_groupowner_user_cfg
Severity
Medium
References
Updated