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The SUSE operating system must disable the USB mass storage kernel module.


Finding ID Version Rule ID IA Controls Severity
V-234856 SLES-15-010480 SV-234856r854202_rule Medium
Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Peripherals include but are not limited to such devices as flash drives, external storage, and printers.
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide 2022-12-07


Check Text ( C-38044r618837_chk )
Verify the SUSE operating system does not automount USB mass storage devices when connected to the host.

Check that "usb-storage" is blacklisted in the "/etc/modprobe.d/50-blacklist.conf" file with the following command:

> grep usb-storage /etc/modprobe.d/50-blacklist.conf
blacklist usb-storage

If nothing is output from the command, this is a finding.
Fix Text (F-38007r618838_fix)
Configure the SUSE operating system to prevent USB mass storage devices from automounting when connected to the host.

Add or update the following line to the "/etc/modprobe.d/50-blacklist.conf" file:

blacklist usb-storage