II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000206-GPOS-00084
Group -
The RHEL 8 /var/log/messages file must be group-owned by root.
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platfo...Rule Medium Severity -
SRG-OS-000206-GPOS-00084
Group -
The RHEL 8 /var/log directory must have mode 0755 or less permissive.
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platfo...Rule Medium Severity -
SRG-OS-000206-GPOS-00084
Group -
The RHEL 8 /var/log directory must be owned by root.
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platfo...Rule Medium Severity -
SRG-OS-000206-GPOS-00084
Group -
The RHEL 8 /var/log directory must be group-owned by root.
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the RHEL 8 system or platfo...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
Group -
The RHEL 8 SSH server must be configured to use only Message Authentication Codes (MACs) employing FIPS 140-3 validated cryptographic hash algorithms.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DOD nonpublic information systems by an auth...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
Group -
The RHEL 8 operating system must implement DOD-approved encryption to protect the confidentiality of SSH server connections.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DOD nonpublic information systems by an auth...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
Group -
RHEL 8 must ensure the SSH server uses strong entropy.
The most important characteristic of a random number generator is its randomness, namely its ability to deliver random numbers that are impossible to predict. Entropy in computer security is associ...Rule Low Severity -
SRG-OS-000250-GPOS-00093
Group -
The RHEL 8 operating system must implement DoD-approved encryption in the OpenSSL package.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DoD nonpublic information systems by an auth...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
Group -
The RHEL 8 operating system must implement DoD-approved TLS encryption in the OpenSSL package.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote access (e.g., RDP) is access to DoD nonpublic information systems by an auth...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
Group -
The RHEL 8 operating system must implement DoD-approved TLS encryption in the GnuTLS package.
Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Transport Layer Security (TLS) encryption is a required security setting as a numbe...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 system commands must have mode 755 or less permissive.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 system commands must be owned by root.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 system commands must be group-owned by root or a system account.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 library files must have mode 755 or less permissive.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 library files must be owned by root.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000259-GPOS-00100
Group -
RHEL 8 library files must be group-owned by root or a system account.
If RHEL 8 were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust ch...Rule Medium Severity -
SRG-OS-000363-GPOS-00150
Group -
The RHEL 8 file integrity tool must notify the system administrator when changes to the baseline configuration or anomalies in the operation of any security functions are discovered within an organizationally defined frequency.
Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the operating system. Changes to operating system configuratio...Rule Medium Severity -
SRG-OS-000366-GPOS-00153
Group -
RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components from a repository without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.
Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has bee...Rule High Severity -
SRG-OS-000366-GPOS-00153
Group -
RHEL 8 must prevent the installation of software, patches, service packs, device drivers, or operating system components of local packages without verification they have been digitally signed using a certificate that is issued by a Certificate Authority (CA) that is recognized and approved by the organization.
Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has bee...Rule High Severity -
SRG-OS-000366-GPOS-00153
Group -
RHEL 8 must prevent the loading of a new kernel for later execution.
Changes to any software components can have significant effects on the overall security of the operating system. This requirement ensures the software has not been tampered with and that it has bee...Rule Medium Severity -
SRG-OS-000312-GPOS-00122
Group -
RHEL 8 must enable kernel parameters to enforce discretionary access control on symlinks.
Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which...Rule Medium Severity -
SRG-OS-000312-GPOS-00122
Group -
RHEL 8 must enable kernel parameters to enforce discretionary access control on hardlinks.
Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which...Rule Medium Severity -
SRG-OS-000138-GPOS-00069
Group -
RHEL 8 must restrict access to the kernel message buffer.
Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of ...Rule Low Severity -
SRG-OS-000138-GPOS-00069
Group -
RHEL 8 must prevent kernel profiling by unprivileged users.
Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of ...Rule Low Severity -
SRG-OS-000373-GPOS-00156
Group -
RHEL 8 must require users to provide a password for privilege escalation.
Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operating systems provide the capability to escalate a functional capability, i...Rule Medium Severity
Node 2
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