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Guide to the Secure Configuration of SUSE Linux Enterprise 15

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Enable Randomized Layout of Virtual Address Space

    To set the runtime status of the <code>kernel.randomize_va_space</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.randomize_va_space=2</pre> To make sure that the se...
    Rule Medium Severity
  • Enable Execute Disable (XD) or No Execute (NX) Support on x86 Systems

    Recent processors in the x86 family support the ability to prevent code execution on a per memory page basis. Generically and on AMD processors, this ability is called No Execute (NX), while on Int...
    Group
  • Enable NX or XD Support in the BIOS

    Reboot the system and enter the BIOS or Setup configuration menu. Navigate the BIOS configuration menu and make sure that the option is enabled. The setting may be located under a Security section....
    Rule Medium Severity
  • Install PAE Kernel on Supported 32-bit x86 Systems

    Systems that are using the 64-bit x86 kernel package do not need to install the kernel-PAE package because the 64-bit x86 kernel already includes this support. However, if the system is 32-bit and ...
    Rule Unknown Severity
  • Memory Poisoning

    Memory Poisoning consists of writing a special value to uninitialized or freed memory. Poisoning can be used as a mechanism to prevent leak of information and detection of corrupted memory.
    Group
  • slub_debug - debug options

    Defines the debug options to use in slub_debug kernel command line argument.
    Value
  • SELinux

    SELinux is a feature of the Linux kernel which can be used to guard against misconfigured or compromised programs. SELinux enforces the idea that programs should be limited in what files they can a...
    Group
  • SELinux policy

    Type of policy in use. Possible values are:
    targeted - Only targeted network daemons are protected.
    strict - Full SELinux protection.
    mls - Multiple levels of security
    Value
  • SELinux state

    enforcing - SELinux security policy is enforced.
    permissive - SELinux prints warnings instead of enforcing.
    disabled - SELinux is fully disabled.
    Value
  • Install libselinux Package

    The libselinux package can be installed with the following command:
    $ sudo zypper install libselinux
    Rule High Severity

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