Collect Kernel Module Loading and Unloading
"Monitor the loading and unloading of kernel modules. The programs insmod (install a kernel module), rmmod (remove a kernel module), and modprobe (a more sophisticated program to load and unload modules, as well as some other features) control loading and unloading of modules. The init_module (load a module) and delete_module (delete a module) system calls control loading and unloading of modules. Any execution of the loading and unloading module programs and system calls will trigger an audit record with an identifier of ""modules""."
[yes/no]
Monitoring the use of insmod, rmmod and modprobe could provide system administrators with evidence that an unauthorized user loaded or unloaded a kernel module, possibly compromising the security of the system. Monitoring of the init_module and delete_module system calls would reflect an unauthorized user attempting to use a different program to load and unload modules.
Fix:
Add the following lines to the /etc/audit/audit.rules file.
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
For 32 bit systems, add
-a always,exit -F arch=b32 -S init_module -S delete_module -k modules
For 64 bit systems, add
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
oval:org.secpod.oval:def:55148
SCAP Repo OVAL Definition
2019-06-19