Title

Ubuntu 24.04 LTS must disable automatic mounting of Universal Serial Bus (USB) mass storage driver. (Cat II impact)

Discussion

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Peripherals include, but are not limited to, devices such as flash drives, external storage, and printers. Satisfies: SRG-OS-000690-GPOS-00140, SRG-OS-000378-GPOS-00163

Check Content

Verify that Ubuntu 24.04 LTS disables ability to load the USB storage kernel module with the following command: $ sudo grep usb-storage /etc/modprobe.d/* | grep "/bin/true" /etc/modprobe.d/DISASTIG.conf:install usb-storage /bin/true If the command does not return any output, or the line is commented out, this is a finding. Verify Ubuntu 24.04 LTS disables the ability to use USB mass storage device. $ sudo grep usb-storage /etc/modprobe.d/* | grep -i "blacklist" /etc/modprobe.d/DISASTIG.conf:blacklist usb-storage If the command does not return any output, or the line is commented out, this is a finding.

Fix Text

Configure Ubuntu 24.04 LTS to disable using the USB storage kernel module with the following command: $ sudo su -c "echo install usb-storage /bin/true >> /etc/modprobe.d/DISASTIG.conf" Configure Ubuntu 24.04 LTS to disable the ability to use USB mass storage devices with the following command: $ sudo su -c "echo blacklist usb-storage >> /etc/modprobe.d/DISASTIG.conf"

Additional Identifiers

Rule ID: SV-270718r1067128_rule

Vulnerability ID: V-270718

Group Title: SRG-OS-000690-GPOS-00140

Expert Comments

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