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Showing SKILL.md
| name | cis-ubuntu1804-v220-1-1-6-3 |
| description | Ensure noexec option set on /var/log/audit partition |
| category | cis-storage |
| version | 2.2.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-18.04","partition","var-log-audit","mount-option","noexec"] |
| cis_id | 1.1.6.3 |
| cis_benchmark | CIS Ubuntu Linux 18.04 LTS Benchmark v2.2.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Level 1 - Server / Level 1 - Workstation, Assessment: Automated
The noexec mount option specifies that the filesystem cannot contain executable binaries.
Since the /var/log/audit filesystem is only intended for audit log files, set this option to ensure that users cannot run executable binaries from /var/log/audit.
None noted.
Verify that the noexec option is set for the /var/log/audit mount.
# findmnt -kn /var/log/audit | grep noexec
/var/log/audit /dev/sda5 ext4 rw,nosuid,nodev,noexec,relatime,seclabel
Edit the /etc/fstab file and add noexec to the fourth field (mounting options) for the /var/log/audit partition.
# Example:
# <device> /var/log/audit <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0
# Run the following command to remount /var/log/audit with the configured options:
mount -o remount /var/log/audit
Not set by default.
v8 - 3.3 Configure Data Access Control Lists (IG 1, IG 2, IG 3) v7 - 14.6 Protect Information through Access Control Lists (IG 1, IG 2, IG 3)
MITRE ATT&CK Mappings: T1204, T1204.002 (TA0005) - M1022