DRAFT - PCI-DSS v4.0.1 Control Baseline for Red Hat Enterprise Linux 10
Rules and Groups employed by this XCCDF Profile
-
Verify Group Who Owns cron.weekly
To properly set the group owner of/etc/cron.weekly
, run the command:$ sudo chgrp root /etc/cron.weekly
Rule Medium Severity -
Verify Group Who Owns Crontab
To properly set the group owner of/etc/crontab
, run the command:$ sudo chgrp root /etc/crontab
Rule Medium Severity -
Verify Owner on cron.d
To properly set the owner of/etc/cron.d
, run the command:$ sudo chown root /etc/cron.d
Rule Medium Severity -
Verify Owner on cron.daily
To properly set the owner of/etc/cron.daily
, run the command:$ sudo chown root /etc/cron.daily
Rule Medium Severity -
Verify Owner on cron.hourly
To properly set the owner of/etc/cron.hourly
, run the command:$ sudo chown root /etc/cron.hourly
Rule Medium Severity -
Verify Owner on cron.monthly
To properly set the owner of/etc/cron.monthly
, run the command:$ sudo chown root /etc/cron.monthly
Rule Medium Severity -
Verify Owner on cron.weekly
To properly set the owner of/etc/cron.weekly
, run the command:$ sudo chown root /etc/cron.weekly
Rule Medium Severity -
Verify Owner on crontab
To properly set the owner of/etc/crontab
, run the command:$ sudo chown root /etc/crontab
Rule Medium Severity -
Verify Permissions on cron.d
To properly set the permissions of/etc/cron.d
, run the command:$ sudo chmod 0700 /etc/cron.d
Rule Medium Severity -
Verify Permissions on cron.daily
To properly set the permissions of/etc/cron.daily
, run the command:$ sudo chmod 0700 /etc/cron.daily
Rule Medium Severity -
Verify Permissions on cron.hourly
To properly set the permissions of/etc/cron.hourly
, run the command:$ sudo chmod 0700 /etc/cron.hourly
Rule Medium Severity -
Verify Permissions on cron.monthly
To properly set the permissions of/etc/cron.monthly
, run the command:$ sudo chmod 0700 /etc/cron.monthly
Rule Medium Severity -
Verify Permissions on cron.weekly
To properly set the permissions of/etc/cron.weekly
, run the command:$ sudo chmod 0700 /etc/cron.weekly
Rule Medium Severity -
Verify Permissions on crontab
To properly set the permissions of/etc/crontab
, run the command:$ sudo chmod 0600 /etc/crontab
Rule Medium Severity -
Restrict at and cron to Authorized Users if Necessary
The <code>/etc/cron.allow</code> and <code>/etc/at.allow</code> files contain lists of users who are allowed to use <code>cron</code> and at to del...Group -
Ensure that /etc/at.deny does not exist
The file/etc/at.deny
should not exist. Use/etc/at.allow
instead.Rule Medium Severity -
Ensure that /etc/cron.deny does not exist
The file/etc/cron.deny
should not exist. Use/etc/cron.allow
instead.Rule Medium Severity -
Verify Group Who Owns /etc/at.allow file
If <code>/etc/at.allow</code> exists, it must be group-owned by <code>root</code>. To properly set the group owner of <code>/etc/at.allow</code>, ...Rule Medium Severity -
Verify Group Who Owns /etc/cron.allow file
If <code>/etc/cron.allow</code> exists, it must be group-owned by <code>root</code>. To properly set the group owner of <code>/etc/cron.allow</cod...Rule Medium Severity -
Verify User Who Owns /etc/at.allow file
If <code>/etc/at.allow</code> exists, it must be owned by <code>root</code>. To properly set the owner of <code>/etc/at.allow</code>, run the comm...Rule Medium Severity -
Verify User Who Owns /etc/cron.allow file
If <code>/etc/cron.allow</code> exists, it must be owned by <code>root</code>. To properly set the owner of <code>/etc/cron.allow</code>, run the ...Rule Medium Severity -
Verify Permissions on /etc/at.allow file
If <code>/etc/at.allow</code> exists, it must have permissions <code>0600</code> or more restrictive. To properly set the permissions of <code>/e...Rule Medium Severity -
Verify Permissions on /etc/cron.allow file
If <code>/etc/cron.allow</code> exists, it must have permissions <code>0600</code> or more restrictive. To properly set the permissions of <code>...Rule Medium Severity -
FTP Server
FTP is a common method for allowing remote access to files. Like telnet, the FTP protocol is unencrypted, which means that passwords and other data...Group -
Remove ftp Package
FTP (File Transfer Protocol) is a traditional and widely used standard tool for transferring files between a server and clients over a network, esp...Rule Low Severity -
Mail Server Software
Mail servers are used to send and receive email over the network. Mail is a very common service, and Mail Transfer Agents (MTAs) are obvious target...Group -
Configure SMTP For Mail Clients
This section discusses settings for Postfix in a submission-only e-mail configuration.Group -
Disable Postfix Network Listening
Edit the file <code>/etc/postfix/main.cf</code> to ensure that only the following <code>inet_interfaces</code> line appears: <pre>inet_interfaces =...Rule Medium Severity -
NFS and RPC
The Network File System is a popular distributed filesystem for the Unix environment, and is very widely deployed. This section discusses the circ...Group -
Disable All NFS Services if Possible
If there is not a reason for the system to operate as either an NFS client or an NFS server, follow all instructions in this section to disable sub...Group -
Disable Services Used Only by NFS
If NFS is not needed, disable the NFS client daemons nfslock, rpcgssd, and rpcidmapd. <br> <br> All of these daemons run with eleva...Group -
Disable rpcbind Service
The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they a...Rule Low Severity -
Network Time Protocol
The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictabl...Group -
The Chrony package is installed
System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or se...Rule Medium Severity -
A remote time server for Chrony is configured
<code>Chrony</code> is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of s...Rule Medium Severity -
Ensure that chronyd is running under chrony user account
chrony is a daemon which implements the Network Time Protocol (NTP). It is designed to synchronize system clocks across a variety of systems and us...Rule Medium Severity -
Obsolete Services
This section discusses a number of network-visible services which have historically caused problems for system security, and for which disabling or...Group -
Ensure rsyncd service is disabled
Thersyncd
service can be disabled with the following command:$ sudo systemctl mask --now rsyncd.service
Rule Medium Severity -
Telnet
The telnet protocol does not provide confidentiality or integrity for information transmitted on the network. This includes authentication informat...Group -
Uninstall telnet-server Package
Thetelnet-server
package can be removed with the following command:$ sudo dnf remove telnet-server
Rule High Severity -
Remove telnet Clients
The telnet client allows users to start connections to other systems via the telnet protocol.Rule Low Severity -
TFTP Server
TFTP is a lightweight version of the FTP protocol which has traditionally been used to configure networking equipment. However, TFTP provides littl...Group -
Uninstall tftp-server Package
Thetftp-server
package can be removed with the following command:$ sudo dnf remove tftp-server
Rule High Severity -
Remove tftp Daemon
Trivial File Transfer Protocol (TFTP) is a simple file transfer protocol, typically used to automatically transfer configuration or boot files betw...Rule Low Severity -
SNMP Server
The Simple Network Management Protocol allows administrators to monitor the state of network devices, including computers. Older versions of SNMP w...Group -
Disable SNMP Server if Possible
The system includes an SNMP daemon that allows for its remote monitoring, though it not installed by default. If it was installed and activated but...Group -
Uninstall net-snmp Package
The <code>net-snmp</code> package provides the snmpd service. The <code>net-snmp</code> package can be removed with the following command: <pre> $...Rule Unknown Severity -
SSH Server
The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between tw...Group -
Verify Permissions on SSH Server config file
To properly set the permissions of/etc/ssh/sshd_config
, run the command:$ sudo chmod 0600 /etc/ssh/sshd_config
Rule Medium Severity -
Verify Permissions on SSH Server Private *_key Key Files
SSH server private keys - files that match the <code>/etc/ssh/*_key</code> glob, have to have restricted permissions. If those files are owned by t...Rule Medium Severity
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.