RHEL 8 must prevent code from being executed on file systems that contain user home directories.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-230302 | RHEL-08-010590 | SV-230302r1017112_rule | CCI-000366 | medium |
| Description | ||||
| The "noexec" mount option causes the system not to execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 8 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-230302r1017112_chk)
Verify file systems that contain user home directories are mounted with the "noexec" option.
Note: If a separate file system has not been created for the user home directories (user home directories are mounted under "/"), this is automatically a finding as the "noexec" option cannot be used on the "/" system.
Find the file system(s) that contain the user home directories with the following command:
$ sudo awk -F: '($3>=1000)&&($7 !~ /nologin/){print $1,$3,$6}' /etc/passwd
smithj:1001: /home/smithj
robinst:1002: /home/robinst
Check the file systems that are mounted at boot time with the following command:
$ sudo more /etc/fstab
UUID=a411dc99-f2a1-4c87-9e05-184977be8539 /home ext4 rw,relatime,discard,data=ordered,nosuid,nodev,noexec 0 2
If a file system found in "/etc/fstab" refers to the user home directory file system and it does not have the "noexec" option set, this is a finding.
Fix Text (F-32946r567653_fix)
Configure the "/etc/fstab" to use the "noexec" option on file systems that contain user home directories for interactive users.