Red Hat Enterprise Linux 9 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000046-GPOS-00022
<GroupDescription></GroupDescription>Group -
RHEL 9 must take appropriate action when a critical audit processing failure occurs.
<VulnDiscussion>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....Rule Medium Severity -
SRG-OS-000462-GPOS-00206
<GroupDescription></GroupDescription>Group -
RHEL 9 audit system must protect logon UIDs from unauthorized change.
<VulnDiscussion>If modification of login user identifiers (UIDs) is not prevented, they can be changed by nonprivileged users and make auditi...Rule Medium Severity -
SRG-OS-000057-GPOS-00027
<GroupDescription></GroupDescription>Group -
RHEL 9 audit system must protect auditing rules from unauthorized change.
<VulnDiscussion>Unauthorized disclosure of audit records can reveal system and configuration data to attackers, thus compromising its confide...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable FIPS mode.
<VulnDiscussion>Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The operating ...Rule High Severity -
SRG-OS-000073-GPOS-00041
<GroupDescription></GroupDescription>Group -
RHEL 9 must employ FIPS 140-3 approved cryptographic hashing algorithms for all stored passwords.
<VulnDiscussion>The system must use a strong hashing algorithm to store the password. Passwords need to be protected at all times, and encry...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
<GroupDescription></GroupDescription>Group -
RHEL 9 IP tunnels must use FIPS 140-2/140-3 approved cryptographic algorithms.
<VulnDiscussion>Overriding the system crypto policy makes the behavior of the Libreswan service violate expectations, and makes system config...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
<GroupDescription></GroupDescription>Group -
RHEL 9 pam_unix.so module must be configured in the password-auth file to use a FIPS 140-3 approved cryptographic hashing algorithm for system authentication.
<VulnDiscussion>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and; therefore, cannot be...Rule Medium Severity -
SRG-OS-000396-GPOS-00176
<GroupDescription></GroupDescription>Group -
RHEL 9 must have the crypto-policies package installed.
<VulnDiscussion>Centralized cryptographic policies simplify applying secure ciphers across an operating system and the applications that run ...Rule Medium Severity -
SRG-OS-000478-GPOS-00223
<GroupDescription></GroupDescription>Group -
RHEL 9 crypto policy files must match files shipped with the operating system.
<VulnDiscussion>The RHEL 9 package "crypto-policies" defines the cryptography policies for the system. If the files are changed from those s...Rule High Severity -
SRG-OS-000396-GPOS-00176
<GroupDescription></GroupDescription>Group -
RHEL 9 crypto policy must not be overridden.
<VulnDiscussion>Centralized cryptographic policies simplify applying secure ciphers across an operating system and the applications that run ...Rule Medium Severity -
SRG-OS-000120-GPOS-00061
<GroupDescription></GroupDescription>Group -
RHEL 9 must use mechanisms meeting the requirements of applicable federal laws, executive orders, directives, policies, regulations, standards, and guidance for authentication to a cryptographic module.
<VulnDiscussion>Overriding the system crypto policy makes the behavior of Kerberos violate expectations, and makes system configuration more ...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement DOD-approved TLS encryption in the GnuTLS package.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Transport L...Rule High Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement DOD-approved encryption in the OpenSSL package.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement DOD-approved TLS encryption in the OpenSSL package.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Remote acce...Rule Medium Severity -
SRG-OS-000396-GPOS-00176
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement a system-wide encryption policy.
<VulnDiscussion>Centralized cryptographic policies simplify applying secure ciphers across an operating system and the applications that run ...Rule Medium Severity -
SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
RHEL 9 must implement DOD-approved encryption in the bind package.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Cryptograph...Rule Medium Severity
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