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V-248621

CAT II (Medium)

OL 8 file systems must not interpret character or block special devices from untrusted file systems.

Rule ID

SV-248621r991589_rule

STIG

Oracle Linux 8 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000366

Discussion

The "nodev" mount option causes the system not to interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for unprivileged users to attain unauthorized administrative access.

Check Content

Verify that file systems used for removable media are mounted with the "nodev" option with the following command: 
 
$ sudo more /etc/fstab 
 
UUID=2bc871e4-e2a3-4f29-9ece-3be60c835222 /mnt/usbflash vfat noauto,owner,ro,nosuid,nodev,noexec 0 0 
 
If a file system found in "/etc/fstab" refers to removable media and it does not have the "nodev" option set, this is a finding.

Fix Text

Configure the "/etc/fstab" to use the "nodev" option on file systems that are associated with removable media.