1.1.5.3 Ensure noexec option set on /var/log partition

Information

The noexec mount option specifies that the filesystem cannot contain executable binaries.

Rationale:

Since the /var/log filesystem is only intended for log files, set this option to ensure that users cannot run executable binaries from /var/log.

Solution

Edit the /etc/fstab file and add noexec 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/files/3939

Item Details

Category: ACCESS CONTROL, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|MP-2, CSCv7|14.6

Plugin: Unix

Control ID: 6aba376135f206589f2a8d8bdf2304c3738edab8199f607e9941334c59638b3f