CCE-92947-1| Platform: cpe:/o:ubuntu:ubuntu_linux:19.04 | Date: (C)2019-11-07 (M)2023-07-04 |
Disable Mounting of cramfs Filesystems
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.
Parameter:
[no/yes]
Technical Mechanism:
Removing support for unneeded filesystem types reduces the local attack surface of the server. If this filesystem type is not needed, disable it.
Fix:
Edit or create the file /etc/modprobe.d/CIS.conf and add the following line:
# install cramfs /bin/true
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 6.1 | Attack Vector: LOCAL |
| Exploit Score: 1.8 | Attack Complexity: LOW |
| Impact Score: 4.2 | Privileges Required: LOW |
| Severity: MEDIUM | User Interaction: NONE |
| Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N | Scope: UNCHANGED |
| | Confidentiality: HIGH |
| | Integrity: LOW |
| | Availability: NONE |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:55160 |
