Guide to the Secure Configuration of Ubuntu 20.04
Rules, Groups, and Values defined within the XCCDF Benchmark
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Verify that Shared Library Directories Have Root Ownership
System-wide shared library files, which are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /usr/lib64 </pr...Rule Medium Severity -
Verify that audit tools are owned by group root
The Ubuntu 20.04 operating system audit tools must have the proper ownership configured to protected against unauthorized access. Verify it by running the following command: <pre>$ stat -c "%n %G"...Rule Medium Severity -
Verify that system commands files are group owned by root or a system account
System commands files are stored in the following directories by default: <pre>/bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin </pre> All files in these directories should be owned by ...Rule Medium Severity -
Verify that audit tools are owned by root
The Ubuntu 20.04 operating system audit tools must have the proper ownership configured to protected against unauthorized access. Verify it by running the following command: <pre>$ stat -c "%n %U"...Rule Medium Severity -
Verify that System Executables Have Root Ownership
System executables are stored in the following directories by default: <pre>/bin /sbin /usr/bin /usr/libexec /usr/local/bin /usr/local/sbin /usr/sbin</pre> All files in these directories should be ...Rule Medium Severity -
Disable Mounting of cramfs
To configure the system to prevent the <code>cramfs</code> kernel module from being loaded, add the following line to the file <code>/etc/modprobe.d/cramfs.conf</code>: <pre>install cramfs /bin/fa...Rule Low Severity -
Verify that audit tools Have Mode 0755 or less
The Ubuntu 20.04 operating system audit tools must have the proper permissions configured to protected against unauthorized access. Verify it by running the following command: <pre>$ stat -c "%n %...Rule Medium Severity -
Verify that System Executables Have Restrictive Permissions
System executables are stored in the following directories by default: <pre>/bin /sbin /usr/bin /usr/libexec /usr/local/bin /usr/local/sbin /usr/sbin</pre> All files in these directories should not...Rule Medium Severity -
Verify that Shared Library Files Have Restrictive Permissions
System-wide shared library files, which are linked to executables during process load time or run time, are stored in the following directories by default: <pre>/lib /lib64 /usr/lib /usr/lib64 </pr...Rule Medium Severity -
Restrict Dynamic Mounting and Unmounting of Filesystems
Linux includes a number of facilities for the automated addition and removal of filesystems on a running system. These facilities may be necessary in many environments, but this capability also ca...Group
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