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1.1.2.6.3 Ensure nosuid option set on /var/log partition

Information

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Since the /var/log filesystem is only intended for log files, set this option to ensure that users cannot create setuid files in /var/log.

Solution

- IF - a separate partition exists for /var/log.

Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /var/log partition.

Example:

<device> /var/log <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0

Run the following command to remount /var/log with the configured options:

# mount -o remount /var/log

See Also

https://workbench.cisecurity.org/benchmarks/19886

Item Details

Category: ACCESS CONTROL, CONFIGURATION MANAGEMENT, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|CM-7(2), 800-53|MP-2, CAT|II, CSCv7|14.6, Rule-ID|SV-230515r854056_rule, Vuln-ID|V-230515

Plugin: Unix

Control ID: 7bd837f04a5302fd63ddc1cd109df84d52abf6d2f4891491b97b813b889622f9