Guide to the Secure Configuration of Red Hat Enterprise Linux 7
Rules, Groups, and Values defined within the XCCDF Benchmark
-
System Settings
Contains rules that check correct system settings.Group -
Installing and Maintaining Software
The following sections contain information on security-relevant choices during the initial operating system installation process and the setup of s...Group -
Prefer to use a 64-bit Operating System when supported
Prefer installation of 64-bit operating systems when the CPU supports it.Rule Medium Severity -
System and Software Integrity
System and software integrity can be gained by installing antivirus, increasing system encryption strength with FIPS, verifying installed software,...Group -
Package "prelink" Must not be Installed
Theprelinkpackage can be removed with the following command:$ sudo yum erase prelink
Rule Medium Severity -
Disable Prelinking
The prelinking feature changes binaries in an attempt to decrease their startup time. In order to disable it, change or add the following line insi...Rule Medium Severity -
Software Integrity Checking
Both the AIDE (Advanced Intrusion Detection Environment) software and the RPM package management system provide mechanisms for verifying the integr...Group -
Integrity Scan Notification Email Address
Specify the email address for designated personnel if baseline configurations are changed in an unauthorized manner.Value -
Verify Integrity with RPM
The RPM package management system includes the ability to verify the integrity of installed packages by comparing the installed files with informat...Group -
Verify and Correct Ownership with RPM
The RPM package management system can check file ownership permissions of installed software packages, including many that are important to system ...Rule High Severity -
Verify and Correct File Permissions with RPM
The RPM package management system can check file access permissions of installed software packages, including many that are important to system sec...Rule High Severity -
Verify Integrity with AIDE
AIDE conducts integrity checks by comparing information about files with previously-gathered information. Ideally, the AIDE database is created imm...Group -
Install AIDE
Theaidepackage can be installed with the following command:$ sudo yum install aide
Rule Medium Severity -
Build and Test AIDE Database
Run the following command to generate a new database: <pre>$ sudo /usr/sbin/aide --init</pre> By default, the database will be written to the fil...Rule Medium Severity -
Configure Periodic Execution of AIDE
At a minimum, AIDE should be configured to run a weekly scan. To implement a daily execution of AIDE at 4:05am using cron, add the following line t...Rule Medium Severity -
Configure Notification of Post-AIDE Scan Details
AIDE should notify appropriate personnel of the details of a scan after the scan has been run. If AIDE has already been configured for periodic exe...Rule Medium Severity -
Configure AIDE to Use FIPS 140-2 for Validating Hashes
By default, the <code>sha512</code> option is added to the <code>NORMAL</code> ruleset in AIDE. If using a custom ruleset or the <code>sha512</code...Rule Medium Severity -
Configure AIDE to Verify Access Control Lists (ACLs)
By default, the <code>acl</code> option is added to the <code>FIPSR</code> ruleset in AIDE. If using a custom ruleset or the <code>acl</code> optio...Rule Low Severity -
Configure AIDE to Verify Extended Attributes
By default, the <code>xattrs</code> option is added to the <code>FIPSR</code> ruleset in AIDE. If using a custom ruleset or the <code>xattrs</code>...Rule Low Severity -
Federal Information Processing Standard (FIPS)
The Federal Information Processing Standard (FIPS) is a computer security standard which is developed by the U.S. Government and industry working g...Group -
Install the dracut-fips-aesni Package
To enable FIPS on system that support the Advanced Encryption Standard (AES) or New Instructions (AES-NI) engine, the system requires that the <cod...Rule Medium Severity -
Install the dracut-fips Package
To enable FIPS, the system requires that the <code>dracut-fips</code> package be installed. The <code>dracut-fips</code> package can be installed w...Rule Medium Severity -
Ensure '/etc/system-fips' exists
On a system where FIPS mode is enabled, <code>/etc/system-fips</code> must exist. To enable FIPS mode, run the following command: <pre>fips-mode-se...Rule High Severity -
Install sudo Package
Thesudopackage can be installed with the following command:$ sudo yum install sudo
Rule Medium Severity -
Enable FIPS Mode in GRUB2
To ensure FIPS mode is enabled, install package <code>dracut-fips</code>, and rebuild <code>initramfs</code> by running the following commands: <pr...Rule High Severity -
System Cryptographic Policies
Linux has the capability to centrally configure cryptographic polices. The command <code>update-crypto-policies</code> is used to set the policy ap...Group -
SSH client RekeyLimit - size
Specify the size component of the rekey limit. This limit signifies amount of data. After this amount of data is transferred through the connection...Value -
SSH client RekeyLimit - time
Specify the time component of the rekey limit. The session key is renegotiated after the defined amount of time passes. The number is followed by u...Value -
The system-provided crypto policies
Specify the crypto policy for the system.Value -
Harden SSH client Crypto Policy
Crypto Policies are means of enforcing certain cryptographic settings for selected applications including OpenSSH client. To override the system wi...Rule Medium Severity -
Harden SSHD Crypto Policy
Crypto Policies are means of enforcing certain cryptographic settings for selected applications including OpenSSH server. The SSHD service is by de...Rule Medium Severity -
Operating System Vendor Support and Certification
The assurance of a vendor to provide operating system support and maintenance for their product is an important criterion to ensure product stabili...Group -
The Installed Operating System Is FIPS 140-2 Certified
To enable processing of sensitive information the operating system must provide certified cryptographic modules compliant with FIPS 140-2 standard....Rule High Severity -
The Installed Operating System Is Vendor Supported
The installed operating system must be maintained by a vendor. Red Hat Enterprise Linux is supported by Red Hat, Inc. As the Red Hat Enterprise Li...Rule High Severity -
Endpoint Protection Software
Endpoint protection security software that is not provided or supported by Red Hat can be installed to provide complementary or duplicative secur...Group -
Configure Backups of User Data
The operating system must conduct backups of user data contained in the operating system. The operating system provides utilities for automating ba...Rule Medium Severity -
Install Virus Scanning Software
Virus scanning software can be used to protect a system from penetration from computer viruses and to limit their spread through intermediate syste...Rule High Severity -
Install Intrusion Detection Software
The base Red Hat Enterprise Linux 7 platform already includes a sophisticated auditing system that can detect intruder activity, as well as SELinux...Rule High Severity -
McAfee Endpoint Security Software
In DoD environments, McAfee Host-based Security System (HBSS) and VirusScan Enterprise for Linux (VSEL) is required to be installed on all systems.Group -
The age of McAfee defintion file before requiring updating
Specify the amount of time (in seconds) before McAfee definition files need to be updated.Value -
Enable nails Service
The <code>nails</code> service is used to run McAfee VirusScan Enterprise for Linux and McAfee Host-based Security System (HBSS) services. The <co...Rule Medium Severity -
Install McAfee Virus Scanning Software
Install McAfee VirusScan Enterprise for Linux antivirus software which is provided for DoD systems and uses signatures to search for the presence o...Rule High Severity -
Install the McAfee Runtime Libraries and Linux Agent
Install the McAfee Runtime Libraries (MFErt) and Linux Agent (MFEcma).Rule Medium Severity -
Virus Scanning Software Definitions Are Updated
Ensure virus definition files are no older than 7 days or their last release.Rule Medium Severity -
McAfee Endpoint Security for Linux (ENSL)
McAfee Endpoint Security for Linux (ENSL) is a suite of software applications used to monitor, detect, and defend computer networks and systems.Group -
net.ipv6.conf.all.accept_ra_defrtr
Accept default router in router advertisements?Value -
Install McAfee Endpoint Security for Linux (ENSL)
Install McAfee Endpoint Security for Linux antivirus software which is provided for DoD systems and uses signatures to search for the presence of v...Rule Medium Severity -
Ensure McAfee Endpoint Security for Linux (ENSL) is running
Install McAfee Endpoint Security for Linux antivirus software which is provided for DoD systems and uses signatures to search for the presence of v...Rule Medium Severity -
McAfee Host-Based Intrusion Detection Software (HBSS)
McAfee Host-based Security System (HBSS) is a suite of software applications used to monitor, detect, and defend computer networks and systems.Group -
Install the Host Intrusion Prevention System (HIPS) Module
Install the McAfee Host Intrusion Prevention System (HIPS) Module if it is absolutely necessary. If SELinux is enabled, do not install or enable th...Rule Medium Severity
Node 2
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.