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Guide to the Secure Configuration of Ubuntu 16.04

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Enable use of Berkeley Packet Filter with seccomp

    Enable tasks to build secure computing environments defined in terms of Berkeley Packet Filter programs which implement task-defined system call fi...
    Rule Medium Severity
  • Enable different security models

    This allows you to choose different security modules to be configured into your kernel. The configuration that was used to build kernel is availab...
    Rule Medium Severity
  • Disable mutable hooks

    Ensure kernel structures associated with LSMs are always mapped as read-only after system boot. The configuration that was used to build kernel is...
    Rule Medium Severity
  • Enable Yama support

    This enables support for LSM module Yama, which extends DAC support with additional system-wide security settings beyond regular Linux discretionar...
    Rule Medium Severity
  • net.ipv4.icmp_ignore_bogus_error_responses

    Enable to prevent unnecessary logging
    Value
  • Enable TCP/IP syncookie support

    Normal TCP/IP networking is open to an attack known as SYN flooding. It is denial-of-service attack that prevents legitimate remote users from bein...
    Rule Medium Severity
  • Unmap kernel when running in userspace (aka KAISER)

    Speculation attacks against some high-performance processors can be used to bypass MMU permission checks and leak kernel data to userspace. This ca...
    Rule Medium Severity
  • Disable x86 vsyscall emulation

    Disabling it is roughly equivalent to booting with vsyscall=none, except that it will also disable the helpful warning if a program tries to use a ...
    Rule Low Severity
  • Kernel GCC plugin configuration

    Contains rules that check the configuration of GCC plugins used by the compiler
    Group
  • Configure Syslog

    The syslog service has been the default Unix logging mechanism for many years. It has a number of downsides, including inconsistent log format, lac...
    Group

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