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Red Hat Enterprise Linux 7 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must use the invoking user's password for privilege escalation when using "sudo".

    &lt;VulnDiscussion&gt;The sudoers security policy requires that users authenticate themselves before they can use sudo. When sudoers requires authe...
    Rule Medium Severity
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  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must require re-authentication when using the "sudo" command.

    &lt;VulnDiscussion&gt;Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When opera...
    Rule Medium Severity
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  • SRG-OS-000080-GPOS-00048

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  • Red Hat Enterprise Linux operating systems version 7.2 or newer booted with a BIOS must have a unique name for the grub superusers account when booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes ...
    Rule Medium Severity
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  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
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  • Red Hat Enterprise Linux operating systems version 7.2 or newer booted with United Extensible Firmware Interface (UEFI) must have a unique name for the grub superusers account when booting into single-user mode and maintenance.

    &lt;VulnDiscussion&gt;If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes ...
    Rule Medium Severity
    Show

  • SRG-OS-000324-GPOS-00125

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must confine SELinux users to roles that conform to least privilege.

    &lt;VulnDiscussion&gt;Preventing nonprivileged users from executing privileged functions mitigates the risk that unauthorized individuals or proces...
    Rule Medium Severity
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  • SRG-OS-000324-GPOS-00125

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must not allow privileged accounts to utilize SSH.

    &lt;VulnDiscussion&gt;Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or proce...
    Rule Medium Severity
    Show

  • SRG-OS-000324-GPOS-00125

    <GroupDescription></GroupDescription>
    Group
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  • The Red Hat Enterprise Linux operating system must elevate the SELinux context when an administrator calls the sudo command.

    &lt;VulnDiscussion&gt;Preventing nonprivileged users from executing privileged functions mitigates the risk that unauthorized individuals or proces...
    Rule Medium Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux 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
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  • The Red Hat Enterprise Linux operating system must specify the default "include" directory for the /etc/sudoers file.

    &lt;VulnDiscussion&gt;The "sudo" command allows authorized users to run programs (including shells) as other users, system users, and root. The "/e...
    Rule Medium Severity
    Show

  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must not be configured to bypass password requirements for privilege escalation.

    &lt;VulnDiscussion&gt;Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When opera...
    Rule Medium Severity
    Show

  • SRG-OS-000445-GPOS-00199

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must use a file integrity tool to verify correct operation of all security functions.

    &lt;VulnDiscussion&gt;Without verification of the security functions, security functions may not operate correctly, and the failure may go unnotice...
    Rule Medium Severity
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  • SRG-OS-000123-GPOS-00064

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must automatically expire temporary accounts within 72 hours.

    &lt;VulnDiscussion&gt;Temporary accounts are privileged or nonprivileged accounts that are established during pressing circumstances, such as new s...
    Rule Medium Severity
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  • SRG-OS-000033-GPOS-00014

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system SSH server must be configured to use only FIPS-validated key exchange algorithms.

    &lt;VulnDiscussion&gt;The use of FIPS-validated cryptographic algorithms is enforced by enabling kernel FIPS mode. In the event that kernel FIPS mo...
    Rule Medium Severity
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  • SRG-OS-000029-GPOS-00010

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must have the screen package installed.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
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  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux 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
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  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • The Red Hat Enterprise Linux operating system must be configured to prevent overwriting of custom authentication configuration settings by the authconfig utility.

    &lt;VulnDiscussion&gt;When using the authconfig utility to modify authentication configuration settings, the "system-auth" and "password-auth" file...
    Rule Medium Severity
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  • SRG-OS-000366-GPOS-00153

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  • The Red Hat Enterprise Linux operating system must ensure cryptographic verification of vendor software packages.

    &lt;VulnDiscussion&gt;Cryptographic verification of vendor software packages ensures that all software packages are obtained from a valid source an...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must disable the login screen user list for graphical user interfaces.

    &lt;VulnDiscussion&gt;Leaving the user list enabled is a security risk as it allows anyone with physical access to the system to enumerate known us...
    Rule Medium Severity
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  • SRG-OS-000363-GPOS-00150

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  • The Red Hat Enterprise Linux operating system must be configured to allow sending email notifications of configuration changes and adverse events to designated personnel.

    &lt;VulnDiscussion&gt;Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized ...
    Rule Medium Severity
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