NIST 800-53 High-Impact Baseline for Red Hat Enterprise Linux CoreOS
Rules and Groups employed by this XCCDF Profile
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Disable Core Dumps for All Users
To disable core dumps for all users, add the following line to <code>/etc/security/limits.conf</code>, or to a file within the <code>/etc/security/...Rule Medium Severity -
Enable ExecShield
ExecShield describes kernel features that provide protection against exploitation of memory corruption errors such as buffer overflows. These featu...Group -
Restrict Exposed Kernel Pointer Addresses Access
To set the runtime status of the <code>kernel.kptr_restrict</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w kernel.kptr_r...Rule Medium 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 info...Group -
Enable page allocator poisoning
To enable poisoning of free pages, add the argument <code>page_poison=1</code> to all BLS (Boot Loader Specification) entries ('options' line) for ...Rule Medium Severity -
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 p...Group -
Ensure SELinux Not Disabled in the kernel arguments
SELinux can be disabled at boot time by disabling it via a kernel argument. Remove any instances of <code>selinux=0</code> from the kernel argument...Rule Medium Severity -
Configure SELinux Policy
The SELinux <code>targeted</code> policy is appropriate for general-purpose desktops and servers, as well as systems in many other roles. To config...Rule Medium Severity -
Ensure SELinux State is Enforcing
The SELinux state should be set to <code><xccdf-1.2:sub idref="xccdf_org.ssgproject.content_value_var_selinux_state" use="legacy"></xccdf-1.2:sub><...Rule High Severity -
Services
The best protection against vulnerable software is running less software. This section describes how to review the software which Red Hat Enterpris...Group
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