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1.1.1.3 Ensure mounting of udf filesystems is disabled

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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.

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: vi /etc/modprobe.d/udf.conf

and 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/benchmarks/8415

Item Details

References: CSCv7|5.1

Plugin: Unix

Control ID: 90d445efea053be06978f2ed8c90e34237f873f8d8f26dbac8f0e5c64a301baf