# 1.1.1.7 Ensure mounting of udf filesystems is disabled # # Description # =========== # The udf filesystem type is the universal disk format used to implement # ISO/IEC 13346 and ECMA-167 specifications. This is an open vendor filesystem # type for data storage on a broad range of media. This filesystem type is # necessary to support writing DVDs and newer optical disc formats. # # Rationale # ========= # Removing support for unneeded filesystem types reduces the local attack # surface of the server. If this filesystem type is not needed, disable it. # # Audit # ===== # Run the following commands and verify the output is as indicated: # # # modprobe -n -v udf # install /bin/true # # lsmod | grep udf # # # Remediation # =========== # Edit or create the file /etc/modprobe.d/CIS.conf and add the following line: # # install udf /bin/true # parameters: linux: system: kernel: module: udf: install: command: /bin/true