| name | cis-ubuntu1604-v200-1-1-8 |
| description | Ensure nosuid option set on /dev/shm partition |
| category | cis-storage |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","filesystem","dev-shm","nosuid","mount-option"] |
| cis_id | 1.1.8 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Ensure nosuid option set on /dev/shm partition
Description
The nosuid mount option specifies that the filesystem cannot contain setuid files.
Rationale
Setting this option on a file system prevents users from introducing privileged programs onto the system and allowing non-root users to execute them.
Impact
None noted.
Audit Procedure
Command Line
findnmt -n /dev/shm | grep -v nosuid
Expected Result
No output should be returned.
Remediation
Command Line
mount -o remount,nosuid,nodev,noexec /dev/shm
Default Value
Not set by default.
References
- CIS Controls Version 7 - 5.1 Establish Secure Configurations: Maintain documented, standard security configuration standards for all authorized operating systems and software.
Profile
Level 1 - Server / Level 1 - Workstation, Assessment: Automated