The USB mass storage driver must be removed or disabled.

From Apple OS X 10.8 (Mountain Lion) Workstation STIG

Associated with: CCI-000366

SV-68077r1_rule The USB mass storage driver must be removed or disabled.

Vulnerability discussion

Malicious code is known to propagate via removable media such as floppy disks, USB or flash drives, and removable hard drives. In order to prevent propagation and potential infection due to malware contained on removable media the operating system must be able to restrict and/or limit the use of removable media.

Check content

This command checks for the presence of the USB mass storage kext (driver). If this command returns any value other than "No such file or directory" this is a finding. ls -ld /System/Library/Extensions/IOUSBMassStorageClass.kext The check to see if a configuration profile is configured to not allow external removable media, run the following command: system_profiler SPConfigurationProfileDataType | grep -A 3 "harddisk-external" | sed 's/ //g' | tr "\n" " " | awk '{ print $2 $3 }' If the result is not "eject,alert" this is a finding.

Fix text

To remove the USB mass storage kext, run the following command: sudo rm -Rf /System/Library/Extensions/IOUSBMassStorageClass.kext This should be enforced using a configuration profile.

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