Finding ID | Version | Rule ID | IA Controls | Severity |
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V-219339 | UBTU-18-010509 | SV-219339r610963_rule | Medium |
Description |
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Without authenticating 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. |
STIG | Date |
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Canonical Ubuntu 18.04 LTS Security Technical Implementation Guide | 2021-06-16 |
Check Text ( C-21064r305345_chk ) |
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Verify that Ubuntu operating system disables ability to load the USB storage kernel module. # grep usb-storage /etc/modprobe.d/* | grep "/bin/true" install usb-storage /bin/true If the command does not return any output, or the line is commented out, this is a finding. Verify the operating system disables the ability to use USB mass storage device. # grep usb-storage /etc/modprobe.d/* | grep -i "blacklist" blacklist usb-storage If the command does not return any output, or the line is commented out, this is a finding. |
Fix Text (F-21063r305346_fix) |
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Configure the Ubuntu operating system to disable using the USB storage kernel module. Create a file under "/etc/modprobe.d" to contain the following: # sudo su -c "echo install usb-storage /bin/true >> /etc/modprobe.d/DISASTIG.conf" Configure the operating system to disable the ability to use USB mass storage devices. # sudo su -c "echo blacklist usb-storage >> /etc/modprobe.d/DISASTIG.conf" |