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Guide to the Secure Configuration of Oracle Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Uncomplicated Firewall (ufw)

    The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the iptables suite of commands. iptables provide a compl...
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  • Disable CAN Support

    The Controller Area Network (CAN) is a serial communications protocol which was initially developed for automotive and is now also used in marine, industrial, and medical applications. To configur...
    Rule Medium Severity
    Show

  • Disable DCCP Support

    The Datagram Congestion Control Protocol (DCCP) is a relatively new transport layer protocol, designed to support streaming media and telephony. To configure the system to prevent the <code>dccp</...
    Rule Medium Severity
    Show

  • Disable IEEE 1394 (FireWire) Support

    The IEEE 1394 (FireWire) is a serial bus standard for high-speed real-time communication. To configure the system to prevent the <code>firewire-core</code> kernel module from being loaded, add the...
    Rule Low Severity
    Show

  • Disable RDS Support

    The Reliable Datagram Sockets (RDS) protocol is a transport layer protocol designed to provide reliable high-bandwidth, low-latency communications between nodes in a cluster. To configure the syst...
    Rule Low Severity
    Show

  • 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...
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  • 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 ...
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  • 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

  • Verify User Who Owns passwd File

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

  • daemons_use_tcp_wrapper SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
    Show

  • daemons_use_tty SELinux Boolean

    default - Default SELinux boolean setting.
    on - SELinux boolean is enabled.
    off - SELinux boolean is disabled.
    Value
    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...
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  • 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...
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  • 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

  • Verify Permissions on /etc/audit/rules.d/*.rules

    To properly set the permissions of /etc/audit/rules.d/*.rules, run the command: 
    $ sudo chmod 0640 /etc/audit/rules.d/*.rules
    Rule Medium Severity
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  • Verify Permissions on System.map Files

    The System.map files are symbol map files generated during the compilation of the Linux kernel. They contain the mapping between kernel symbols and their corresponding memory addresses. In general,...
    Rule Low Severity
    Show

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