ANSSI-BP-028 (high)
Rules and Groups employed by this XCCDF Profile
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Harden the operation of the BPF just-in-time compiler
To set the runtime status of the <code>net.core.bpf_jit_harden</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.core.b...Rule Medium Severity -
Prevent applications from mapping low portion of virtual memory
To set the runtime status of the <code>vm.mmap_min_addr</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w vm.mmap_min_addr=...Rule Medium Severity -
Install PAE Kernel on Supported 32-bit x86 Systems
Systems that are using the 64-bit x86 kernel package do not need to install the kernel-PAE package because the 64-bit x86 kernel already includes t...Rule Unknown Severity -
Enable page allocator poisoning
To enable poisoning of free pages, add the argument <code>page_poison=1</code> to the default GRUB 2 command line for the Linux operating system. C...Rule Medium Severity -
Enable SLUB/SLAB allocator poisoning
To enable poisoning of SLUB/SLAB objects, add the argument <code>slub_debug=<xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_slub_debug...Rule Medium Severity -
Uninstall setroubleshoot-plugins Package
The SETroubleshoot plugins are used to analyze SELinux AVC data. The service provides information around configuration errors, unauthorized intrusi...Rule Low Severity -
Uninstall setroubleshoot-server Package
The SETroubleshoot service notifies desktop users of SELinux denials. The service provides information around configuration errors, unauthorized in...Rule Low Severity -
Uninstall setroubleshoot Package
The SETroubleshoot service notifies desktop users of SELinux denials. The service provides information around configuration errors, unauthorized in...Rule Low Severity -
Verify Group Who Owns /etc/selinux Directory
To properly set the group owner of/etc/selinux, run the command:$ sudo chgrp root /etc/selinux
Rule Medium Severity -
Verify User Who Owns /etc/selinux Directory
To properly set the owner of/etc/selinux, run the command:$ sudo chown root /etc/selinux
Rule Medium Severity -
Verify Permissions On /etc/selinux Directory
To properly set the permissions of/etc/selinux, run the command:$ sudo chmod 0755 /etc/selinux
Rule Medium Severity -
Verify Group Who Owns /etc/sestatus.conf File
To properly set the group owner of/etc/sestatus.conf, run the command:$ sudo chgrp root /etc/sestatus.conf
Rule Medium Severity -
Verify User Who Owns /etc/sestatus.conf File
To properly set the owner of/etc/sestatus.conf, run the command:$ sudo chown root /etc/sestatus.conf
Rule Medium Severity -
Verify Permissions On /etc/sestatus.conf File
To properly set the permissions of/etc/sestatus.conf, run the command:$ sudo chmod 0644 /etc/sestatus.conf
Rule Medium Severity -
Configure the polyinstantiation_enabled SELinux Boolean
By default, the SELinux boolean <code>polyinstantiation_enabled</code> is disabled. This setting should be configured to <xccdf-1.2:sub idref="xccd...Rule Medium Severity -
Uninstall DHCP Server Package
If the system does not need to act as a DHCP server, the dhcp package can be uninstalled. The <code>dhcp</code> package can be removed with the fo...Rule Medium Severity -
Uninstall Sendmail Package
Sendmail is not the default mail transfer agent and is not installed by default. The <code>sendmail</code> package can be removed with the followin...Rule Medium Severity -
Disable Postfix Network Listening
Edit the file <code>/etc/postfix/main.cf</code> to ensure that only the following <code>inet_interfaces</code> line appears: <pre>inet_interfaces =...Rule Medium Severity -
Enable the NTP Daemon
Run the following command to determine the current status of the <code>chronyd</code> service: <pre>$ sudo systemctl is-active chronyd</pre> If t...Rule Medium Severity -
Chrony Configure Pool and Server
<code>Chrony</code> is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of s...Rule Medium Severity
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.