Red Hat Enterprise Linux 8 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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RHEL 8 must employ FIPS 140-2 approved cryptographic hashing algorithms for all stored passwords.
The system must use a strong hashing algorithm to store the password. Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are ...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
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SRG-OS-000080-GPOS-00048
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RHEL 8 operating systems booted with United Extensible Firmware Interface (UEFI) must require authentication upon booting into single-user mode and maintenance.
If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all file...Rule High Severity -
SRG-OS-000080-GPOS-00048
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RHEL 8 operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes.
If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all file...Rule High Severity -
SRG-OS-000080-GPOS-00048
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RHEL 8 operating systems must require authentication upon booting into rescue mode.
If the system does not require valid root authentication before it boots into emergency or rescue mode, anyone who invokes emergency or rescue mode is granted privileged access to all files on the ...Rule Medium Severity -
SRG-OS-000120-GPOS-00061
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The RHEL 8 pam_unix.so module must be configured in the password-auth file to use a FIPS 140-2 approved cryptographic hashing algorithm for system authentication.
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be ...Rule Medium Severity -
SRG-OS-000120-GPOS-00061
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SRG-OS-000120-GPOS-00061
Group -
The krb5-workstation package must not be installed on RHEL 8.
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied upon to provide confidentiality or integrity, and DoD data may be ...Rule Medium Severity -
SRG-OS-000134-GPOS-00068
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RHEL 8 must use a Linux Security Module configured to enforce limits on system services.
Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmwar...Rule Medium Severity -
SRG-OS-000134-GPOS-00068
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RHEL 8 must have policycoreutils package installed.
Without verification of the security functions, security functions may not operate correctly and the failure may go unnoticed. Security function is defined as the hardware, software, and/or firmwar...Rule Low Severity -
SRG-OS-000138-GPOS-00069
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SRG-OS-000163-GPOS-00072
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RHEL 8 must be configured so that all network connections associated with SSH traffic terminate after becoming unresponsive.
Terminating an unresponsive SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or con...Rule Medium Severity
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