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ANSSI-BP-028 (enhanced)

Rules and Groups employed by this XCCDF Profile

  • Disable Core Dumps for SUID programs

    To set the runtime status of the <code>fs.suid_dumpable</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.suid_dumpable=...
    Rule Medium Severity
    Show

  • Enable ExecShield

    ExecShield describes kernel features that provide protection against exploitation of memory corruption errors such as buffer overflows. These featu...
    Group
    Show

  • Restrict Exposed Kernel Pointer Addresses Access

    To set the runtime status of the <code>kernel.kptr_restrict</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.kptr_r...
    Rule Medium Severity
    Show

  • Enable Randomized Layout of Virtual Address Space

    To set the runtime status of the <code>kernel.randomize_va_space</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.r...
    Rule Medium Severity
    Show

  • Memory Poisoning

    Memory Poisoning consists of writing a special value to uninitialized or freed memory. Poisoning can be used as a mechanism to prevent leak of info...
    Group
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  • 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. T...
    Rule Medium Severity
    Show

  • 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
    Show

  • SELinux

    SELinux is a feature of the Linux kernel which can be used to guard against misconfigured or compromised programs. SELinux enforces the idea that p...
    Group
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  • Configure SELinux Policy

    The SELinux <code>targeted</code> policy is appropriate for general-purpose desktops and servers, as well as systems in many other roles. To config...
    Rule Medium Severity
    Show

  • Ensure SELinux State is Enforcing

    The SELinux state should be set to <code><xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_selinux_state" use="legacy"></xccdf-1.2:sub><...
    Rule High Severity
    Show

  • SELinux - Booleans

    Enable or Disable runtime customization of SELinux system policies without having to reload or recompile the SELinux policy.
    Group
    Show

  • 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
    Show

  • Services

    The best protection against vulnerable software is running less software. This section describes how to review the software which Oracle Linux 9 in...
    Group
    Show

  • DHCP

    The Dynamic Host Configuration Protocol (DHCP) allows systems to request and obtain an IP address and other configuration parameters from a server....
    Group
    Show

  • Disable DHCP Server

    The DHCP server <code>dhcpd</code> is not installed or activated by default. If the software was installed and activated, but the system does not n...
    Group
    Show

  • 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-server</code> package can be removed with...
    Rule Medium Severity
    Show

  • Mail Server Software

    Mail servers are used to send and receive email over the network. Mail is a very common service, and Mail Transfer Agents (MTAs) are obvious target...
    Group
    Show

  • 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
    Show

  • Configure SMTP For Mail Clients

    This section discusses settings for Postfix in a submission-only e-mail configuration.
    Group
    Show

  • Configure System to Forward All Mail For The Root Account

    Make sure that mails delivered to root user are forwarded to a monitored email address. Make sure that the address <xccdf-1.2:sub idref="xccdf_org....
    Rule Medium Severity
    Show

  • 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
    Show

  • Network Time Protocol

    The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictabl...
    Group
    Show

  • The Chrony package is installed

    System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or se...
    Rule Medium Severity
    Show

  • A remote time server for Chrony is configured

    <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
    Show

  • Obsolete Services

    This section discusses a number of network-visible services which have historically caused problems for system security, and for which disabling or...
    Group
    Show

  • Xinetd

    The <code>xinetd</code> service acts as a dedicated listener for some network services (mostly, obsolete ones) and can be used to provide access co...
    Group
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  • Uninstall xinetd Package

    The xinetd package can be removed with the following command: 
    $ sudo yum erase xinetd
    Rule Low Severity
    Show

  • Rlogin, Rsh, and Rexec

    The Berkeley r-commands are legacy services which allow cleartext remote access and have an insecure trust model.
    Group
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  • Uninstall rsh-server Package

    The rsh-server package can be removed with the following command: 
    $ sudo yum erase rsh-server
    Rule High Severity
    Show

  • Uninstall rsh Package

    The rsh package contains the client commands for the rsh services
    Rule Unknown Severity
    Show

  • Chat/Messaging Services

    The talk software makes it possible for users to send and receive messages across systems through a terminal session.
    Group
    Show

  • Uninstall talk-server Package

    The talk-server package can be removed with the following command: 
     $ sudo yum erase talk-server
    Rule Medium Severity
    Show

  • Uninstall talk Package

    The <code>talk</code> package contains the client program for the Internet talk protocol, which allows the user to chat with other users on differe...
    Rule Medium Severity
    Show

  • Telnet

    The telnet protocol does not provide confidentiality or integrity for information transmitted on the network. This includes authentication informat...
    Group
    Show

  • Uninstall telnet-server Package

    The telnet-server package can be removed with the following command: 
    $ sudo yum erase telnet-server
    Rule High Severity
    Show

  • Remove telnet Clients

    The telnet client allows users to start connections to other systems via the telnet protocol.
    Rule Low Severity
    Show

  • TFTP Server

    TFTP is a lightweight version of the FTP protocol which has traditionally been used to configure networking equipment. However, TFTP provides littl...
    Group
    Show

  • Uninstall tftp-server Package

    The tftp-server package can be removed with the following command: 
     $ sudo yum erase tftp-server
    Rule High Severity
    Show

  • Remove tftp Daemon

    Trivial File Transfer Protocol (TFTP) is a simple file transfer protocol, typically used to automatically transfer configuration or boot files betw...
    Rule Low Severity
    Show

  • SSH Server

    The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between tw...
    Group
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  • Verify Permissions on SSH Server Private *_key Key Files

    SSH server private keys - files that match the <code>/etc/ssh/*_key</code> glob, have to have restricted permissions. If those files are owned by t...
    Rule Medium Severity
    Show

  • Configure OpenSSH Server if Necessary

    If the system needs to act as an SSH server, then certain changes should be made to the OpenSSH daemon configuration file <code>/etc/ssh/sshd_confi...
    Group
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  • Set SSH Client Alive Count Max

    The SSH server sends at most <code>ClientAliveCountMax</code> messages during a SSH session and waits for a response from the SSH client. The optio...
    Rule Medium Severity
    Show

  • Set SSH Client Alive Interval

    SSH allows administrators to set a network responsiveness timeout interval. After this interval has passed, the unresponsive client will be automat...
    Rule Medium Severity
    Show

  • Disable SSH Root Login

    The root user should never be allowed to login to a system directly over a network. To disable root login via SSH, add or correct the following lin...
    Rule Medium Severity
    Show

  • Record Attempts to perform maintenance activities

    The Oracle Linux 9 operating system must generate audit records for privileged activities, nonlocal maintenance, diagnostic sessions and other syst...
    Rule Medium Severity
    Show

  • Configure Microarchitectural Data Sampling mitigation

    Microarchitectural Data Sampling (MDS) is a hardware vulnerability which allows unprivileged speculative access to data which is available in vario...
    Rule Medium Severity
    Show

  • Enable Kernel Parameter to Enforce DAC on FIFOs

    To set the runtime status of the <code>fs.protected_fifos</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_fi...
    Rule Medium Severity
    Show

  • Enable Kernel Parameter to Enforce DAC on Regular files

    To set the runtime status of the <code>fs.protected_regular</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w fs.protected_...
    Rule Medium Severity
    Show

Node 2

siemur/test-space

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.

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