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Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must disable the x86 Ctrl-Alt-Delete key sequence if a graphical user interface is installed.

    &lt;VulnDiscussion&gt;A locally logged-on user who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must disable the x86 Ctrl-Alt-Delete key sequence.

    &lt;VulnDiscussion&gt;A locally logged-on user who presses Ctrl-Alt-Delete, when at the console, can reboot the system. If accidentally pressed, as...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must not have accounts configured with blank or null passwords.

    &lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must not allow accounts configured with blank or null passwords.

    &lt;VulnDiscussion&gt;If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...
    Rule High Severity
    Show

  • SRG-OS-000378-GPOS-00163

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.

    &lt;VulnDiscussion&gt;Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. ...
    Rule Medium Severity
    Show

  • SRG-OS-000481-GPOS-00481

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must disable all wireless network adapters.

    &lt;VulnDiscussion&gt;Without protection of communications with wireless peripherals, confidentiality and integrity may be compromised because unpr...
    Rule Medium Severity
    Show

  • SRG-OS-000250-GPOS-00093

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system SSH server must be configured to use only FIPS-validated key exchange algorithms.

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections provided by FIPS-validated cryptographic algorithms, information can be viewed an...
    Rule Medium Severity
    Show

  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Ubuntu operating system must restrict access to the kernel message buffer.

    &lt;VulnDiscussion&gt;Restricting access to the kernel message buffer limits access only to root. This prevents attackers from gaining additional s...
    Rule Low Severity
    Show

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