RHEL 8 must prevent code from being executed on file systems that contain user home directories.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-230302	SRG-OS-000480-GPOS-00227	RHEL-08-010590	SV-230302r1017112_rule	2025-03-26	2

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.

ℹ️ Check
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.

ℹ️ Check

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
Configure the "/etc/fstab" to use the "noexec" option on file systems that contain user home directories for interactive users.