Skip to content
Log In

Guide to the Secure Configuration of Red Hat Enterprise Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Bind Mount /var/tmp To /tmp

    The <code>/var/tmp</code> directory is a world-writable directory. Bind-mount it to <code>/tmp</code> in order to consolidate temporary storage into one location protected by the same techniques as...
    Rule Unknown Severity
    Show

  • Add nosuid Option to /var/tmp

    The <code>nosuid</code> mount option can be used to prevent execution of setuid programs in <code>/var/tmp</code>. The SUID and SGID permissions should not be required in these world-writable direc...
    Rule Medium Severity
    Show

  • Verify Permissions on Important Files and Directories Are Configured in /etc/permissions.local

    Permissions for many files on a system must be set restrictively to ensure sensitive information is properly protected. This section discusses the <code>/etc/permissions.local</code> file, where ex...
    Group
    Show

  • Restrict Programs from Dangerous Execution Patterns

    The recommendations in this section are designed to ensure that the system's features to protect against potentially dangerous program execution are activated. These protections are applied at the ...
    Group
    Show

  • kernel.unprivileged_bpf_disabled

    Prevent unprivileged processes from using the bpf() syscall.
    Value
    Show

  • Disable the uvcvideo module

    If the device contains a camera it should be covered or disabled when not in use.
    Rule Medium Severity
    Show

  • Restrict Access to Kernel Message Buffer

    To set the runtime status of the <code>kernel.dmesg_restrict</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.dmesg_restrict=1</pre> To make sure that the setting is...
    Rule Low Severity
    Show

  • Disable Kernel Image Loading

    To set the runtime status of the <code>kernel.kexec_load_disabled</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.kexec_load_disabled=1</pre> To make sure that the ...
    Rule Medium Severity
    Show

  • Disable loading and unloading of kernel modules

    To set the runtime status of the <code>kernel.modules_disabled</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.modules_disabled=1</pre> To make sure that the settin...
    Rule Medium Severity
    Show

  • Kernel panic on oops

    To set the runtime status of the <code>kernel.panic_on_oops</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.panic_on_oops=1</pre> To make sure that the setting is p...
    Rule Medium Severity
    Show

  • Limit CPU consumption of the Perf system

    To set the runtime status of the <code>kernel.perf_cpu_time_max_percent</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.perf_cpu_time_max_percent=1</pre> To make su...
    Rule Medium Severity
    Show

  • Limit sampling frequency of the Perf system

    To set the runtime status of the <code>kernel.perf_event_max_sample_rate</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.perf_event_max_sample_rate=1</pre> To make ...
    Rule Medium Severity
    Show

  • Disallow kernel profiling by unprivileged users

    To set the runtime status of the <code>kernel.perf_event_paranoid</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.perf_event_paranoid=2</pre> To make sure that the ...
    Rule Low Severity
    Show

  • Configure maximum number of process identifiers

    To set the runtime status of the <code>kernel.pid_max</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.pid_max=65536</pre> To make sure that the setting is persisten...
    Rule Medium Severity
    Show

  • Disallow magic SysRq key

    To set the runtime status of the <code>kernel.sysrq</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.sysrq=0</pre> To make sure that the setting is persistent, add t...
    Rule Medium Severity
    Show

  • Restrict usage of ptrace to descendant processes

    To set the runtime status of the <code>kernel.yama.ptrace_scope</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.yama.ptrace_scope=1</pre> To make sure that the sett...
    Rule Medium Severity
    Show

  • Prevent applications from mapping low portion of virtual memory

    To set the runtime status of the <code>vm.mmap_min_addr</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w vm.mmap_min_addr=65536</pre> To make sure that the setting is persi...
    Rule Medium Severity
    Show

  • Disable Core Dumps

    A core dump file is the memory image of an executable program when it was terminated by the operating system due to errant behavior. In most cases, only software developers legitimately need to acc...
    Group
    Show

  • Disable core dump backtraces

    The <code>ProcessSizeMax</code> option in <code>[Coredump]</code> section of <code>/etc/systemd/coredump.conf</code> specifies the maximum size in bytes of a core which will be processed. Core dump...
    Rule Medium Severity
    Show

  • Disable storing core dump

    The Storage option in [Coredump] sectionof /etc/systemd/coredump.conf can be set to none to disable storing core dumps permanently.
    Rule Medium Severity
    Show

Node 2

siemur/test-space

The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

Capacity
Modules