1.1.1.7 Ensure mounting of udf filesystems is disabled - modprobe

Information

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 system. If this filesystem type is not needed, disable it.

Solution

Edit or create a file in the /etc/modprobe.d/ directory ending in .conf
Example: /etc/modprobe.d/udf.conf
Add the following line:

install udf /bin/true

Run the following command to unload the udf module:

# rmmod udf

See Also

https://workbench.cisecurity.org/files/3152

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-11, CSCv6|3.1, CSCv7|2.6

Plugin: Unix

Control ID: 8cfe3dd3c25d6957b2138881a536f373b1eb32413f69e5fad290392f08cc77d4