RHEL 9 must prevent code from being executed on file systems that contain user home directories.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-257852 | RHEL-09-231055 | SV-257852r991589_rule | CCI-000366 | medium |
| Description | ||||
| The "noexec" mount option causes the system to not 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 nonprivileged users to attain unauthorized administrative access. | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2025-05-14 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · 2 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · 2 · disa_xccdf · related
Details
Check Text (C-257852r991589_chk)
Verify "/home" is mounted with the "noexec" option with the following command:
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.
$ mount | grep /home
tmpfs on /home type xfs (rw,nodev,nosuid,noexec,seclabel)
If the "/home" file system is mounted without the "noexec" option, this is a finding.
Fix Text (F-61517r925542_fix)
Modify "/etc/fstab" to use the "noexec" option on the "/home" directory.