Red Hat Enterprise Linux 9 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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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 -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
The rsyslog service on RHEL 9 must be active.
<VulnDiscussion>The "rsyslog" service must be running to provide logging services, which are essential to system administration.</VulnDisc...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured so that the rsyslog daemon does not accept log messages from other servers unless the server is being used for log aggregation.
<VulnDiscussion>Unintentionally running a rsyslog server accepting remote messages puts the system at increased risk. Malicious rsyslog messa...Rule Medium Severity -
SRG-OS-000032-GPOS-00013
<GroupDescription></GroupDescription>Group -
All RHEL 9 remote access methods must be monitored.
<VulnDiscussion>Logging remote access methods can be used to trace the decrease in the risks associated with remote user access management. I...Rule Medium Severity -
SRG-OS-000342-GPOS-00133
<GroupDescription></GroupDescription>Group -
RHEL 9 must be configured to offload audit records onto a different system from the system being audited via syslog.
<VulnDiscussion>The auditd service does not include the ability to send audit records to a centralized server for management directly. Howeve...Rule Medium Severity -
SRG-OS-000342-GPOS-00133
<GroupDescription></GroupDescription>Group -
RHEL 9 must authenticate the remote logging server for offloading audit logs via rsyslog.
<VulnDiscussion>Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common ...Rule Medium Severity
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