1.1.1.3 Ensure mounting of jffs2 filesystems is disabled

Information

The jffs2 (journaling flash filesystem 2) filesystem type is a log-structured filesystem used in flash memory devices.

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/jffs2.conf
Add the following line:

install jffs2 /bin/true

Run the following command to unload the jffs2 module:

# rmmod jffs2

See Also

https://workbench.cisecurity.org/files/3144

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-11, CSCv6|13, CSCv7|2.6

Plugin: Unix

Control ID: 42cada0b3d02baf5707d314465cc42a4f177aba4143b4e45eef2d24929939945