Red Hat Enterprise Linux 8 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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All RHEL 8 local interactive user home directories must be group-owned by the home directory owner’s primary group.
If the Group Identifier (GID) of a local interactive user’s home directory is not the same as the primary GID of the user, this would allow unauthorized access to the user’s files, and users that s...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
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RHEL 8 must be a vendor-supported release.
An operating system release is considered "supported" if the vendor continues to provide security patches for the product. With an unsupported release, it will not be possible to resolve security i...Rule High Severity -
SRG-OS-000480-GPOS-00227
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RHEL 8 vendor packaged system security patches and updates must be installed and up to date.
Timely patching is critical for maintaining the operational availability, confidentiality, and integrity of information technology (IT) systems. However, failure to keep operating system and applic...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
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RHEL 8 must implement NIST FIPS-validated cryptography for the following: To provision digital signatures, to generate cryptographic hashes, and to protect data requiring data-at-rest protections in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.
Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The operating system must implement cryptographic modules adhering to the higher standards...Rule High Severity -
SRG-OS-000185-GPOS-00079
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SRG-OS-000023-GPOS-00006
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SRG-OS-000023-GPOS-00006
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RHEL 8 must display the Standard Mandatory DoD Notice and Consent Banner before granting local or remote access to the system via a graphical user logon.
Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal ...Rule Medium Severity -
SRG-OS-000023-GPOS-00006
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SRG-OS-000032-GPOS-00013
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SRG-OS-000066-GPOS-00034
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RHEL 8, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.
Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted. A trust anchor is an authoritative entit...Rule Medium Severity -
SRG-OS-000067-GPOS-00035
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RHEL 8, for certificate-based authentication, must enforce authorized access to the corresponding private key.
If an unauthorized user obtains access to a private key without a passcode, that user would have unauthorized access to any system where the associated public key has been installed.Rule Medium Severity -
SRG-OS-000073-GPOS-00041
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RHEL 8 must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.
Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily c...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
Group
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