III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000073-GPOS-00041
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured so that user and group account administration utilities are configured to store only encrypted representations of passwords.
<VulnDiscussion>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
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured to use the shadow file to store only encrypted representations of passwords.
<VulnDiscussion>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-000373-GPOS-00156
<GroupDescription></GroupDescription>Group -
RHEL 9 must not be configured to bypass password requirements for privilege escalation.
<VulnDiscussion>Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operatin...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must not have accounts configured with blank or null passwords.
<VulnDiscussion>If an account has an empty password, anyone could log in and run commands with the privileges of that account. Accounts with ...Rule Medium Severity -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
RHEL 9 must use the common access card (CAC) smart card driver.
<VulnDiscussion>Smart card login provides two-factor authentication stronger than that provided by a username and password combination. Smart...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable certificate based smart card authentication.
<VulnDiscussion>Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor a...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement certificate status checking for multifactor authentication.
<VulnDiscussion>Using an authentication device, such as a DOD common access card (CAC) or token that is separate from the information system,...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the pcsc-lite package installed.
<VulnDiscussion>The pcsc-lite package must be installed if it is to be available for multifactor authentication using smart cards.</VulnDi...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
The pcscd service on RHEL 9 must be active.
<VulnDiscussion>The information system ensures that even if the information system is compromised, that compromise will not affect credential...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the opensc package installed.
<VulnDiscussion>The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. The DOD has mandated the...Rule Medium Severity -
SRG-OS-000067-GPOS-00035
<GroupDescription></GroupDescription>Group -
RHEL 9, for PKI-based authentication, must enforce authorized access to the corresponding private key.
<VulnDiscussion>If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the ne...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
RHEL 9 must require authentication to access emergency mode.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-ap...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
<GroupDescription></GroupDescription>Group -
RHEL 9 must require authentication to access single-user mode.
<VulnDiscussion>To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-ap...Rule Medium Severity -
SRG-OS-000120-GPOS-00061
<GroupDescription></GroupDescription>Group -
RHEL 9 must prevent system daemons from using Kerberos for authentication.
<VulnDiscussion>Unapproved mechanisms used for authentication to the cryptographic module are not verified; therefore, cannot be relied upon ...Rule Medium Severity -
SRG-OS-000066-GPOS-00034
<GroupDescription></GroupDescription>Group -
RHEL 9, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.
<VulnDiscussion>Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...Rule Medium Severity -
SRG-OS-000068-GPOS-00036
<GroupDescription></GroupDescription>Group -
RHEL 9 must map the authenticated identity to the user or group account for PKI-based authentication.
<VulnDiscussion>Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the indivi...Rule Medium Severity -
SRG-OS-000383-GPOS-00166
<GroupDescription></GroupDescription>Group -
RHEL 9 must prohibit the use of cached authenticators after one day.
<VulnDiscussion>If cached authentication information is out-of-date, the validity of the authentication information may be questionable.</...Rule Medium Severity -
SRG-OS-000363-GPOS-00150
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the AIDE package installed.
<VulnDiscussion>Without verification of the security functions, security functions may not operate correctly, and the failure may go unnotice...Rule Medium Severity -
SRG-OS-000363-GPOS-00150
<GroupDescription></GroupDescription>Group -
RHEL 9 must routinely check the baseline configuration for unauthorized changes and notify the system administrator when anomalies in the operation of any security functions are discovered.
<VulnDiscussion>Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized ...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must use a file integrity tool that is configured to use FIPS 140-3-approved cryptographic hashes for validating file contents and directories.
<VulnDiscussion>RHEL 9 installation media ships with an optional file integrity tool called Advanced Intrusion Detection Environment (AIDE). ...Rule Medium Severity -
SRG-OS-000256-GPOS-00097
<GroupDescription></GroupDescription>Group -
RHEL 9 must use cryptographic mechanisms to protect the integrity of audit tools.
<VulnDiscussion>Protecting the integrity of the tools used for auditing purposes is a critical step toward ensuring the integrity of audit in...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured so that the file integrity tool verifies Access Control Lists (ACLs).
<VulnDiscussion>RHEL 9 installation media ships with an optional file integrity tool called Advanced Intrusion Detection Environment (AIDE). ...Rule Low Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured so that the file integrity tool verifies extended attributes.
<VulnDiscussion>RHEL 9 installation media ships with an optional file integrity tool called Advanced Intrusion Detection Environment (AIDE). ...Rule Low Severity -
SRG-OS-000479-GPOS-00224
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the rsyslog package installed.
<VulnDiscussion>rsyslogd is a system utility providing support for message logging. Support for both internet and Unix domain sockets enables...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the packages required for encrypting offloaded audit logs installed.
<VulnDiscussion>The rsyslog-gnutls package provides Transport Layer Security (TLS) support for the rsyslog daemon, which enables secure remot...Rule Medium Severity
Node 2
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