Amazon Linux 2023 must prevent files with the setuid and setgid bit set from being executed on the /boot/efi directory.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-274178 | AZLX-23-002580 | SV-274178r1120522_rule | CCI-001764 | medium |
| Description | ||||
| The "nosuid" mount option causes the system not to execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. | ||||
| STIG | Date | |||
| Amazon Linux 2023 Security Technical Implementation Guide | 2026-02-27 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-7(2)
1.00
- DISA · V1R3 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.4.7
1.00
- DISA · V1R3 · 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-001764
1.00
- DISA · V1R3 · disa_xccdf · related
Details
Check Text (C-274178r1120522_chk)
Verify Amazon Linux 2023 is configured so that the /boot/efi directory is mounted with the "nosuid" option with the following command:
$ mount | grep '\s/boot/efi\s'
/dev/sda1 on /boot/efi type vfat (rw,nosuid,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=winnt,errors=remount-ro)
If the /boot/efi file system does not have the "nosuid" option set, this is a finding.
Fix Text (F-78174r1120521_fix)
Configure Amazon Linux 2023 so that the /boot/efi directory is mounted with the "nosuid" option.
Modify "/etc/fstab" to use the "nosuid" option on the "/boot/efi" directory.