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Guide to the Secure Configuration of Oracle Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Disable SCTP Support

    The Stream Control Transmission Protocol (SCTP) is a transport layer protocol, designed to support the idea of message-oriented communication, with several streams of messages within one connection...
    Rule Medium Severity
    Show

  • Disable TIPC Support

    The Transparent Inter-Process Communication (TIPC) protocol is designed to provide communications between nodes in a cluster. To configure the system to prevent the <code>tipc</code> kernel module...
    Rule Low Severity
    Show

  • Wireless Networking

    Wireless networking, such as 802.11 (WiFi) and Bluetooth, can present a security risk to sensitive or classified systems and networks. Wireless networking hardware is much more likely to be include...
    Group
    Show

  • Disable Wireless Through Software Configuration

    If it is impossible to remove the wireless hardware from the device in question, disable as much of it as possible through software. The following methods can disable software support for wireless ...
    Group
    Show

  • Disable Bluetooth Service

    The bluetooth service can be disabled with the following command: 
    $ sudo systemctl mask --now bluetooth.service
    $ sudo service bluetooth stop
    Rule Medium Severity
    Show

  • File Permissions and Masks

    Traditional Unix security relies heavily on file and directory permissions to prevent unauthorized users from reading or modifying files to which they should not have access. <br> <br> Severa...
    Group
    Show

  • Verify Permissions on Important Files and Directories

    Permissions for many files on a system must be set restrictively to ensure sensitive information is properly protected. This section discusses important permission restrictions which can be verifie...
    Group
    Show

  • Ensure All World-Writable Directories Are Owned by root User

    All directories in local partitions which are world-writable should be owned by root. If any world-writable directories are not owned by root, this should be investigated. Following this, the files...
    Rule Medium Severity
    Show

  • Ensure All World-Writable Directories Are Owned by a System Account

    All directories in local partitions which are world-writable should be owned by root or another system account. If any world-writable directories are not owned by a system account, this should be i...
    Rule Medium Severity
    Show

  • Ensure All World-Writable Directories Are Group Owned by a System Account

    All directories in local partitions which are world-writable should be group owned by root or another system account. If any world-writable directories are not group owned by a system account, this...
    Rule Medium Severity
    Show

  • Ensure All SUID Executables Are Authorized

    The SUID (set user id) bit should be set only on files that were installed via authorized means. A straightforward means of identifying unauthorized SUID files is determine if any were not installe...
    Rule Medium Severity
    Show

  • Ensure No World-Writable Files Exist

    It is generally a good idea to remove global (other) write access to a file when it is discovered. However, check with documentation for specific applications before making changes. Also, monitor f...
    Rule Medium Severity
    Show

  • Ensure All Files Are Owned by a Group

    If any file is not group-owned by a group present in /etc/group, the cause of the lack of group-ownership must be investigated. Following this, those files should be deleted or assigned to an appro...
    Rule Medium Severity
    Show

  • Ensure All Files Are Owned by a User

    If any files are not owned by a user, then the cause of their lack of ownership should be investigated. Following this, the files should be deleted or assigned to an appropriate user. Locate the m...
    Rule Medium Severity
    Show

  • Verify User Who Owns Backup passwd File

    To properly set the owner of /etc/passwd-, run the command: 
    $ sudo chown root /etc/passwd-
    Rule Medium Severity
    Show

  • Verify Permissions on Files with Local Account Information and Credentials

    The default restrictive permissions for files which act as important security databases such as <code>passwd</code>, <code>shadow</code>, <code>group</code>, and <code>gshadow</code> files must be ...
    Group
    Show

  • Verify Group Who Owns Backup group File

    To properly set the group owner of /etc/group-, run the command: 
    $ sudo chgrp root /etc/group-
    Rule Medium Severity
    Show

  • Verify Group Who Owns Backup gshadow File

    To properly set the group owner of /etc/gshadow-, run the command: 
    $ sudo chgrp root /etc/gshadow-
    Rule Medium Severity
    Show

  • Verify Group Who Owns Backup passwd File

    To properly set the group owner of /etc/passwd-, run the command: 
    $ sudo chgrp root /etc/passwd-
    Rule Medium Severity
    Show

  • Verify User Who Owns Backup shadow File

    To properly set the group owner of /etc/shadow-, run the command: 
    $ sudo chgrp root /etc/shadow-
    Rule Medium Severity
    Show

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