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1.1.1.1 Ensure mounting of cramfs filesystems is disabled

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

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Information

The cramfs filesystem type is a compressed read-only Linux filesystem embedded in small footprint systems. A cramfs image can be used without having to first decompress the image. Removing support for unneeded filesystem types reduces the local attack surface of the server. If this filesystem type is not needed, disable it.

Solution

Edit or create the file /etc/modprobe.d/CIS.conf and add the following line: install cramfs /bin/true

 Run the following command to unload the cramfs module: # rmmod cramfs

See Also

https://workbench.cisecurity.org/files/1865

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7b., CSCv6|3.1

Plugin: Unix

Control ID: b22e4e1f25d2a13b3f9e53dfa47c6c11abfe9ef3878f0a24abe6654a7b3629f4