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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

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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system security patches and updates must be installed and up to date.

    Timely patching is critical for maintaining the operational availability, confidentiality, and integrity of information technology (IT) systems. However, failure to keep operating system and applic...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must not have unnecessary accounts.

    Accounts providing no operational purpose provide additional opportunities for system compromise. Unnecessary accounts include user accounts for individuals not requiring access to the system and a...
    Rule Medium Severity
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  • SRG-OS-000104-GPOS-00051

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  • The Red Hat Enterprise Linux operating system must be configured so that all Group Identifiers (GIDs) referenced in the /etc/passwd file are defined in the /etc/group file.

    If a user is assigned the GID of a group not existing on the system, and a group with the GID is subsequently created, the user may have unintended rights to any files associated with the group.
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must be configured so that the root account must be the only account having unrestricted access to the system.

    If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire operating system. Multiple accounts with a UID of...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must be configured so that all files and directories have a valid owner.

    Unowned files and directories may be unintentionally inherited if a user is assigned the same User Identifier "UID" as the UID of the un-owned files.
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must be configured so that all local interactive user accounts, upon creation, are assigned a home directory.

    If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files they should own.
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must be configured so that all local interactive user home directories have mode 0750 or less permissive.

    Excessive permissions on local interactive user home directories may allow unauthorized access to user files by other users.
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The Red Hat Enterprise Linux operating system must be configured so that all local interactive user home directories are owned by their respective users.

    If a local interactive user does not own their home directory, unauthorized users could access or modify the user's files, and the users may not be able to access their own files.
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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