Removable media, remote file systems, and any file system not containing approved device files must be mounted with the nodev option.

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Removable media, remote file systems, and any file system not containing approved device files must be mounted with the nodev option.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-22368	GEN002430	SV-38747r1_rule	ECSC-1	Medium

Description
The nodev (or equivalent) mount option causes the system to not handle device files as system devices. This option must be used for mounting any file system not containing approved device files. Device files can provide direct access to system hardware and can compromise security if not protected.

STIG	Date
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE	2018-09-18

Details

Check Text ( C-37187r1_chk )
If the system does not support a nodev option, this is not applicable. Check /etc/filesystems and verify the nodev mount option (options = ) is used on any file systems mounted from removable media or network shares, or file systems not containing any approved device files. If any such file system is not using the nodev option, this is a finding.

Fix Text (F-32463r1_fix)
Edit /etc/filesystems and add the options = nodev to all entries for remote or removable media file systems, and file systems containing no approved device files.