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CIS Ubuntu Linux 20.04 LTS Server L1 v2.0.1

Audit Details

Name: CIS Ubuntu Linux 20.04 LTS Server L1 v2.0.1

Updated: 11/6/2024

Authority: CIS

Plugin: Unix

Revision: 1.22

Estimated Item Count: 230

File Details

Filename: CIS_Ubuntu_20.04_LTS_v2.0.1_L1_Server.audit

Size: 971 kB

MD5: befec811829c0e9e467a902ab1fc2e55
SHA256: 44bb3b995f6418151b03e5cdcdfa1b46673ec085287038d9b8e25d2b21b2a98d

Audit Changelog

 
Revision 1.22

Nov 6, 2024

Functional Update
  • 6.1.11 Ensure world writable files and directories are secured
  • 6.1.12 Ensure no unowned or ungrouped files or directories exist
  • 6.1.13 Ensure SUID and SGID files are reviewed
Revision 1.21

Aug 26, 2024

Functional Update
  • 1.4.3 Ensure authentication required for single user mode
  • 4.5.5 Ensure default user shell timeout is configured
Miscellaneous
  • References updated.
Revision 1.20

Jul 31, 2024

Miscellaneous
  • Variables updated.
Revision 1.19

Jun 17, 2024

Miscellaneous
  • Metadata updated.
Revision 1.18

Jun 6, 2024

Functional Update
  • 1.1.1.1 Ensure mounting of cramfs filesystems is disabled
  • 1.1.1.2 Ensure mounting of freevxfs filesystems is disabled
  • 1.1.1.3 Ensure mounting of jffs2 filesystems is disabled
  • 1.1.1.4 Ensure mounting of hfs filesystems is disabled
  • 1.1.1.5 Ensure mounting of hfsplus filesystems is disabled
  • 1.1.10 Disable USB Storage
  • 1.1.2.1 Ensure /tmp is a separate partition
  • 1.1.2.2 Ensure nodev option set on /tmp partition
  • 1.1.2.3 Ensure noexec option set on /tmp partition
  • 1.1.2.4 Ensure nosuid option set on /tmp partition
  • 1.1.3.2 Ensure nodev option set on /var partition
  • 1.1.3.3 Ensure nosuid option set on /var partition
  • 1.1.4.2 Ensure nodev option set on /var/tmp partition
  • 1.1.4.3 Ensure noexec option set on /var/tmp partition
  • 1.1.4.4 Ensure nosuid option set on /var/tmp partition
  • 1.1.5.2 Ensure nodev option set on /var/log partition
  • 1.1.5.3 Ensure noexec option set on /var/log partition
  • 1.1.5.4 Ensure nosuid option set on /var/log partition
  • 1.1.6.2 Ensure nodev option set on /var/log/audit partition
  • 1.1.6.3 Ensure noexec option set on /var/log/audit partition
  • 1.1.6.4 Ensure nosuid option set on /var/log/audit partition
  • 1.1.7.2 Ensure nodev option set on /home partition
  • 1.1.7.3 Ensure nosuid option set on /home partition
  • 1.1.8.1 Ensure nodev option set on /dev/shm partition
  • 1.1.8.2 Ensure noexec option set on /dev/shm partition
  • 1.1.8.3 Ensure nosuid option set on /dev/shm partition
  • 1.1.9 Disable Automounting
  • 1.2.1 Ensure AIDE is installed
  • 1.2.2 Ensure filesystem integrity is regularly checked
  • 1.3.1 Ensure updates, patches, and additional security software are installed
  • 1.3.2 Ensure package manager repositories are configured
  • 1.3.3 Ensure GPG keys are configured
  • 1.4.1 Ensure bootloader password is set
  • 1.4.2 Ensure permissions on bootloader config are configured
  • 1.4.3 Ensure authentication required for single user mode
  • 1.5.1 Ensure prelink is not installed
  • 1.5.2 Ensure address space layout randomization (ASLR) is enabled
  • 1.5.3 Ensure ptrace_scope is restricted
  • 1.5.4 Ensure Automatic Error Reporting is not enabled
  • 1.5.5 Ensure core dumps are restricted
  • 1.6.1.1 Ensure AppArmor is installed
  • 1.6.1.2 Ensure AppArmor is enabled in the bootloader configuration
  • 1.6.1.3 Ensure all AppArmor Profiles are in enforce or complain mode
  • 1.7.1 Ensure message of the day is configured properly
  • 1.7.2 Ensure local login warning banner is configured properly
  • 1.7.3 Ensure remote login warning banner is configured properly
  • 1.7.4 Ensure permissions on /etc/motd are configured
  • 1.7.5 Ensure permissions on /etc/issue are configured
  • 1.7.6 Ensure permissions on /etc/issue.net are configured
  • 2.1.1.1 Ensure a single time synchronization daemon is in use
  • 2.1.2.1 Ensure chrony is configured with authorized timeserver
  • 2.1.2.2 Ensure chrony is running as user _chrony
  • 2.1.2.3 Ensure chrony is enabled and running
  • 2.1.3.1 Ensure systemd-timesyncd configured with authorized timeserver
  • 2.1.3.2 Ensure systemd-timesyncd is enabled and running
  • 2.1.4.1 Ensure ntp access control is configured
  • 2.1.4.2 Ensure ntp is configured with authorized timeserver
  • 2.1.4.3 Ensure ntp is running as user ntp
  • 2.1.4.4 Ensure ntp is enabled and running
  • 2.2.10 Ensure IMAP and POP3 server are not installed
  • 2.2.11 Ensure Samba is not installed
  • 2.2.12 Ensure HTTP Proxy Server is not installed
  • 2.2.13 Ensure SNMP Server is not installed
  • 2.2.14 Ensure NIS Server is not installed
  • 2.2.15 Ensure dnsmasq is not installed
  • 2.2.16 Ensure mail transfer agent is configured for local-only mode
  • 2.2.17 Ensure rsync service is either not installed or is masked
  • 2.2.2 Ensure Avahi Server is not installed
  • 2.2.3 Ensure CUPS is not installed
  • 2.2.4 Ensure DHCP Server is not installed
  • 2.2.5 Ensure LDAP server is not installed
  • 2.2.6 Ensure NFS is not installed
  • 2.2.7 Ensure DNS Server is not installed
  • 2.2.8 Ensure FTP Server is not installed
  • 2.2.9 Ensure HTTP server is not installed
  • 2.3.1 Ensure NIS Client is not installed
  • 2.3.2 Ensure rsh client is not installed
  • 2.3.3 Ensure talk client is not installed
  • 2.3.4 Ensure telnet client is not installed
  • 2.3.5 Ensure LDAP client is not installed
  • 2.4 Ensure nonessential services are removed or masked
  • 3.1.1 Ensure IPv6 status is identified
  • 3.1.3 Ensure bluetooth is disabled
  • 3.2.1 Ensure packet redirect sending is disabled
  • 3.2.2 Ensure IP forwarding is disabled
  • 3.3.1 Ensure source routed packets are not accepted
  • 3.3.2 Ensure ICMP redirects are not accepted
  • 3.3.3 Ensure secure ICMP redirects are not accepted
  • 3.3.4 Ensure suspicious packets are logged
  • 3.3.5 Ensure broadcast ICMP requests are ignored
  • 3.3.6 Ensure bogus ICMP responses are ignored
  • 3.3.7 Ensure Reverse Path Filtering is enabled
  • 3.3.8 Ensure TCP SYN Cookies is enabled
  • 3.3.9 Ensure IPv6 router advertisements are not accepted
  • 3.4.1.1 Ensure ufw is installed
  • 3.4.1.2 Ensure iptables-persistent is not installed with ufw
  • 3.4.1.3 Ensure ufw service is enabled
  • 3.4.1.4 Ensure ufw loopback traffic is configured
  • 3.4.1.5 Ensure ufw outbound connections are configured
  • 3.4.1.6 Ensure ufw firewall rules exist for all open ports
  • 3.4.1.7 Ensure ufw default deny firewall policy
  • 3.4.2.1 Ensure nftables is installed
  • 3.4.2.10 Ensure nftables rules are permanent
  • 3.4.2.2 Ensure ufw is uninstalled or disabled with nftables
  • 3.4.2.3 Ensure iptables are flushed with nftables
  • 3.4.2.4 Ensure a nftables table exists
  • 3.4.2.5 Ensure nftables base chains exist
  • 3.4.2.6 Ensure nftables loopback traffic is configured
  • 3.4.2.7 Ensure nftables outbound and established connections are configured
  • 3.4.2.8 Ensure nftables default deny firewall policy
  • 3.4.2.9 Ensure nftables service is enabled
  • 3.4.3.1.1 Ensure iptables packages are installed
  • 3.4.3.1.2 Ensure nftables is not installed with iptables
  • 3.4.3.1.3 Ensure ufw is uninstalled or disabled with iptables
  • 3.4.3.2.1 Ensure iptables default deny firewall policy
  • 3.4.3.2.2 Ensure iptables loopback traffic is configured
  • 3.4.3.2.3 Ensure iptables outbound and established connections are configured
  • 3.4.3.2.4 Ensure iptables firewall rules exist for all open ports
  • 3.4.3.3.1 Ensure ip6tables default deny firewall policy
  • 3.4.3.3.2 Ensure ip6tables loopback traffic is configured
  • 3.4.3.3.3 Ensure ip6tables outbound and established connections are configured
  • 3.4.3.3.4 Ensure ip6tables firewall rules exist for all open ports
  • 4.1.1 Ensure cron daemon is enabled and active
  • 4.1.2 Ensure permissions on /etc/crontab are configured
  • 4.1.3 Ensure permissions on /etc/cron.hourly are configured
  • 4.1.4 Ensure permissions on /etc/cron.daily are configured
  • 4.1.5 Ensure permissions on /etc/cron.weekly are configured
  • 4.1.6 Ensure permissions on /etc/cron.monthly are configured
  • 4.1.7 Ensure permissions on /etc/cron.d are configured
  • 4.1.8 Ensure cron is restricted to authorized users
  • 4.1.9 Ensure at is restricted to authorized users
  • 4.2.1 Ensure permissions on /etc/ssh/sshd_config are configured
  • 4.2.10 Ensure SSH PermitUserEnvironment is disabled
  • 4.2.11 Ensure SSH IgnoreRhosts is enabled
  • 4.2.13 Ensure only strong Ciphers are used
  • 4.2.14 Ensure only strong MAC algorithms are used
  • 4.2.15 Ensure only strong Key Exchange algorithms are used
  • 4.2.17 Ensure SSH warning banner is configured
  • 4.2.18 Ensure SSH MaxAuthTries is set to 4 or less
  • 4.2.19 Ensure SSH MaxStartups is configured
  • 4.2.2 Ensure permissions on SSH private host key files are configured
  • 4.2.20 Ensure SSH LoginGraceTime is set to one minute or less
  • 4.2.21 Ensure SSH MaxSessions is set to 10 or less
  • 4.2.22 Ensure SSH Idle Timeout Interval is configured
  • 4.2.3 Ensure permissions on SSH public host key files are configured
  • 4.2.4 Ensure SSH access is limited
  • 4.2.5 Ensure SSH LogLevel is appropriate
  • 4.2.6 Ensure SSH PAM is enabled
  • 4.2.7 Ensure SSH root login is disabled
  • 4.2.8 Ensure SSH HostbasedAuthentication is disabled
  • 4.2.9 Ensure SSH PermitEmptyPasswords is disabled
  • 4.3.2 Ensure sudo commands use pty
  • 4.3.3 Ensure sudo log file exists
  • 4.3.5 Ensure re-authentication for privilege escalation is not disabled globally
  • 4.3.6 Ensure sudo authentication timeout is configured correctly
  • 4.3.7 Ensure access to the su command is restricted
  • 4.4.1 Ensure password creation requirements are configured
  • 4.4.2 Ensure lockout for failed password attempts is configured
  • 4.4.3 Ensure password reuse is limited
  • 4.4.4 Ensure strong password hashing algorithm is configured
  • 4.4.5 Ensure all current passwords uses the configured hashing algorithm
  • 4.5.1.2 Ensure password expiration is 365 days or less
  • 4.5.1.3 Ensure password expiration warning days is 7 or more
  • 4.5.1.4 Ensure inactive password lock is 30 days or less
  • 4.5.1.5 Ensure all users last password change date is in the past
  • 4.5.1.6 Ensure the number of changed characters in a new password is configured
  • 4.5.1.7 Ensure preventing the use of dictionary words for passwords is configured
  • 4.5.2 Ensure system accounts are secured
  • 4.5.3 Ensure default group for the root account is GID 0
  • 4.5.4 Ensure default user umask is 027 or more restrictive
  • 4.5.5 Ensure default user shell timeout is configured
  • 4.5.7 Ensure maximum number of same consecutive characters in a password is configured
  • 5.1.1.1.1 Ensure systemd-journal-remote is installed
  • 5.1.1.1.2 Ensure systemd-journal-remote is configured
  • 5.1.1.1.3 Ensure systemd-journal-remote is enabled
  • 5.1.1.1.4 Ensure journald is not configured to receive logs from a remote client
  • 5.1.1.2 Ensure journald service is enabled
  • 5.1.1.3 Ensure journald is configured to compress large log files
  • 5.1.1.4 Ensure journald is configured to write logfiles to persistent disk
  • 5.1.1.5 Ensure journald is not configured to send logs to rsyslog
  • 5.1.1.6 Ensure journald log rotation is configured per site policy
  • 5.1.1.7 Ensure journald default file permissions configured
  • 5.1.2.1 Ensure rsyslog is installed
  • 5.1.2.2 Ensure rsyslog service is enabled
  • 5.1.2.3 Ensure journald is configured to send logs to rsyslog
  • 5.1.2.4 Ensure rsyslog default file permissions are configured
  • 5.1.2.5 Ensure logging is configured
  • 5.1.2.6 Ensure rsyslog is configured to send logs to a remote log host
  • 5.1.2.7 Ensure rsyslog is not configured to receive logs from a remote client
  • 5.2.4.11 Ensure cryptographic mechanisms are used to protect the integrity of audit tools
  • 6.1.1 Ensure permissions on /etc/passwd are configured
  • 6.1.10 Ensure permissions on /etc/opasswd are configured
  • 6.1.2 Ensure permissions on /etc/passwd- are configured
  • 6.1.3 Ensure permissions on /etc/group are configured
  • 6.1.4 Ensure permissions on /etc/group- are configured
  • 6.1.5 Ensure permissions on /etc/shadow are configured
  • 6.1.6 Ensure permissions on /etc/shadow- are configured
  • 6.1.7 Ensure permissions on /etc/gshadow are configured
  • 6.1.8 Ensure permissions on /etc/gshadow- are configured
  • 6.1.9 Ensure permissions on /etc/shells are configured
  • 6.2.1 Ensure accounts in /etc/passwd use shadowed passwords
  • 6.2.10 Ensure root is the only UID 0 account
  • 6.2.11 Ensure local interactive user home directories are configured
  • 6.2.2 Ensure /etc/shadow password fields are not empty
  • 6.2.3 Ensure all groups in /etc/passwd exist in /etc/group
  • 6.2.4 Ensure shadow group is empty
  • 6.2.5 Ensure no duplicate UIDs exist
  • 6.2.6 Ensure no duplicate GIDs exist
  • 6.2.7 Ensure no duplicate user names exist
  • 6.2.8 Ensure no duplicate group names exist
  • 6.2.9 Ensure root PATH Integrity
Informational Update
  • 1.1.1.1 Ensure mounting of cramfs filesystems is disabled
  • 1.1.1.2 Ensure mounting of freevxfs filesystems is disabled
  • 1.1.1.3 Ensure mounting of jffs2 filesystems is disabled
  • 1.1.1.4 Ensure mounting of hfs filesystems is disabled
  • 1.1.1.5 Ensure mounting of hfsplus filesystems is disabled
  • 1.1.10 Disable USB Storage
  • 1.1.2.1 Ensure /tmp is a separate partition
  • 1.1.2.2 Ensure nodev option set on /tmp partition
  • 1.1.2.3 Ensure noexec option set on /tmp partition
  • 1.1.2.4 Ensure nosuid option set on /tmp partition
  • 1.1.3.2 Ensure nodev option set on /var partition
  • 1.1.3.3 Ensure nosuid option set on /var partition
  • 1.1.4.2 Ensure nodev option set on /var/tmp partition
  • 1.1.4.3 Ensure noexec option set on /var/tmp partition
  • 1.1.4.4 Ensure nosuid option set on /var/tmp partition
  • 1.1.5.2 Ensure nodev option set on /var/log partition
  • 1.1.5.3 Ensure noexec option set on /var/log partition
  • 1.1.5.4 Ensure nosuid option set on /var/log partition
  • 1.1.6.2 Ensure nodev option set on /var/log/audit partition
  • 1.1.6.3 Ensure noexec option set on /var/log/audit partition
  • 1.1.6.4 Ensure nosuid option set on /var/log/audit partition
  • 1.1.7.2 Ensure nodev option set on /home partition
  • 1.1.7.3 Ensure nosuid option set on /home partition
  • 1.1.8.1 Ensure nodev option set on /dev/shm partition
  • 1.1.8.2 Ensure noexec option set on /dev/shm partition
  • 1.1.8.3 Ensure nosuid option set on /dev/shm partition
  • 1.1.9 Disable Automounting
  • 1.2.1 Ensure AIDE is installed
  • 1.2.2 Ensure filesystem integrity is regularly checked
  • 1.3.1 Ensure updates, patches, and additional security software are installed
  • 1.3.2 Ensure package manager repositories are configured
  • 1.3.3 Ensure GPG keys are configured
  • 1.4.1 Ensure bootloader password is set
  • 1.4.2 Ensure permissions on bootloader config are configured
  • 1.4.3 Ensure authentication required for single user mode
  • 1.5.1 Ensure prelink is not installed
  • 1.5.2 Ensure address space layout randomization (ASLR) is enabled
  • 1.5.3 Ensure ptrace_scope is restricted
  • 1.5.4 Ensure Automatic Error Reporting is not enabled
  • 1.5.5 Ensure core dumps are restricted
  • 1.6.1.1 Ensure AppArmor is installed
  • 1.6.1.2 Ensure AppArmor is enabled in the bootloader configuration
  • 1.6.1.3 Ensure all AppArmor Profiles are in enforce or complain mode
  • 1.7.1 Ensure message of the day is configured properly
  • 1.7.2 Ensure local login warning banner is configured properly
  • 1.7.3 Ensure remote login warning banner is configured properly
  • 1.7.4 Ensure permissions on /etc/motd are configured
  • 1.7.5 Ensure permissions on /etc/issue are configured
  • 1.7.6 Ensure permissions on /etc/issue.net are configured
  • 1.8.2 Ensure GDM login banner is configured
  • 1.8.3 Ensure GDM disable-user-list option is enabled
  • 1.8.4 Ensure GDM screen locks when the user is idle
  • 1.8.5 Ensure GDM screen locks cannot be overridden
  • 1.8.6 Ensure GDM automatic mounting of removable media is disabled
  • 1.8.7 Ensure GDM disabling automatic mounting of removable media is not overridden
  • 1.8.8 Ensure GDM autorun-never is enabled
  • 1.8.9 Ensure GDM autorun-never is not overridden
  • 2.1.1.1 Ensure a single time synchronization daemon is in use
  • 2.1.2.1 Ensure chrony is configured with authorized timeserver
  • 2.1.2.2 Ensure chrony is running as user _chrony
  • 2.1.2.3 Ensure chrony is enabled and running
  • 2.1.3.1 Ensure systemd-timesyncd configured with authorized timeserver
  • 2.1.3.2 Ensure systemd-timesyncd is enabled and running
  • 2.1.4.1 Ensure ntp access control is configured
  • 2.1.4.2 Ensure ntp is configured with authorized timeserver
  • 2.1.4.3 Ensure ntp is running as user ntp
  • 2.1.4.4 Ensure ntp is enabled and running
  • 2.2.10 Ensure IMAP and POP3 server are not installed
  • 2.2.11 Ensure Samba is not installed
  • 2.2.12 Ensure HTTP Proxy Server is not installed
  • 2.2.13 Ensure SNMP Server is not installed
  • 2.2.14 Ensure NIS Server is not installed
  • 2.2.15 Ensure dnsmasq is not installed
  • 2.2.16 Ensure mail transfer agent is configured for local-only mode
  • 2.2.17 Ensure rsync service is either not installed or is masked
  • 2.2.2 Ensure Avahi Server is not installed
  • 2.2.3 Ensure CUPS is not installed
  • 2.2.4 Ensure DHCP Server is not installed
  • 2.2.5 Ensure LDAP server is not installed
  • 2.2.6 Ensure NFS is not installed
  • 2.2.7 Ensure DNS Server is not installed
  • 2.2.8 Ensure FTP Server is not installed
  • 2.2.9 Ensure HTTP server is not installed
  • 2.3.1 Ensure NIS Client is not installed
  • 2.3.2 Ensure rsh client is not installed
  • 2.3.3 Ensure talk client is not installed
  • 2.3.4 Ensure telnet client is not installed
  • 2.3.5 Ensure LDAP client is not installed
  • 2.4 Ensure nonessential services are removed or masked
  • 3.1.1 Ensure IPv6 status is identified
  • 3.1.2 Ensure wireless interfaces are disabled
  • 3.1.3 Ensure bluetooth is disabled
  • 3.2.1 Ensure packet redirect sending is disabled
  • 3.2.2 Ensure IP forwarding is disabled
  • 3.3.1 Ensure source routed packets are not accepted
  • 3.3.2 Ensure ICMP redirects are not accepted
  • 3.3.3 Ensure secure ICMP redirects are not accepted
  • 3.3.4 Ensure suspicious packets are logged
  • 3.3.5 Ensure broadcast ICMP requests are ignored
  • 3.3.6 Ensure bogus ICMP responses are ignored
  • 3.3.7 Ensure Reverse Path Filtering is enabled
  • 3.3.8 Ensure TCP SYN Cookies is enabled
  • 3.3.9 Ensure IPv6 router advertisements are not accepted
  • 3.4.1.1 Ensure ufw is installed
  • 3.4.1.2 Ensure iptables-persistent is not installed with ufw
  • 3.4.1.3 Ensure ufw service is enabled
  • 3.4.1.4 Ensure ufw loopback traffic is configured
  • 3.4.1.5 Ensure ufw outbound connections are configured
  • 3.4.1.6 Ensure ufw firewall rules exist for all open ports
  • 3.4.1.7 Ensure ufw default deny firewall policy
  • 3.4.2.1 Ensure nftables is installed
  • 3.4.2.10 Ensure nftables rules are permanent
  • 3.4.2.2 Ensure ufw is uninstalled or disabled with nftables
  • 3.4.2.3 Ensure iptables are flushed with nftables
  • 3.4.2.4 Ensure a nftables table exists
  • 3.4.2.5 Ensure nftables base chains exist
  • 3.4.2.6 Ensure nftables loopback traffic is configured
  • 3.4.2.7 Ensure nftables outbound and established connections are configured
  • 3.4.2.8 Ensure nftables default deny firewall policy
  • 3.4.2.9 Ensure nftables service is enabled
  • 3.4.3.1.1 Ensure iptables packages are installed
  • 3.4.3.1.2 Ensure nftables is not installed with iptables
  • 3.4.3.1.3 Ensure ufw is uninstalled or disabled with iptables
  • 3.4.3.2.1 Ensure iptables default deny firewall policy
  • 3.4.3.2.2 Ensure iptables loopback traffic is configured
  • 3.4.3.2.3 Ensure iptables outbound and established connections are configured
  • 3.4.3.2.4 Ensure iptables firewall rules exist for all open ports
  • 3.4.3.3.1 Ensure ip6tables default deny firewall policy
  • 3.4.3.3.2 Ensure ip6tables loopback traffic is configured
  • 3.4.3.3.3 Ensure ip6tables outbound and established connections are configured
  • 3.4.3.3.4 Ensure ip6tables firewall rules exist for all open ports
  • 4.1.1 Ensure cron daemon is enabled and active
  • 4.1.2 Ensure permissions on /etc/crontab are configured
  • 4.1.3 Ensure permissions on /etc/cron.hourly are configured
  • 4.1.4 Ensure permissions on /etc/cron.daily are configured
  • 4.1.5 Ensure permissions on /etc/cron.weekly are configured
  • 4.1.6 Ensure permissions on /etc/cron.monthly are configured
  • 4.1.7 Ensure permissions on /etc/cron.d are configured
  • 4.1.8 Ensure cron is restricted to authorized users
  • 4.1.9 Ensure at is restricted to authorized users
  • 4.2.1 Ensure permissions on /etc/ssh/sshd_config are configured
  • 4.2.10 Ensure SSH PermitUserEnvironment is disabled
  • 4.2.11 Ensure SSH IgnoreRhosts is enabled
  • 4.2.13 Ensure only strong Ciphers are used
  • 4.2.14 Ensure only strong MAC algorithms are used
  • 4.2.15 Ensure only strong Key Exchange algorithms are used
  • 4.2.17 Ensure SSH warning banner is configured
  • 4.2.18 Ensure SSH MaxAuthTries is set to 4 or less
  • 4.2.19 Ensure SSH MaxStartups is configured
  • 4.2.2 Ensure permissions on SSH private host key files are configured
  • 4.2.20 Ensure SSH LoginGraceTime is set to one minute or less
  • 4.2.21 Ensure SSH MaxSessions is set to 10 or less
  • 4.2.22 Ensure SSH Idle Timeout Interval is configured
  • 4.2.3 Ensure permissions on SSH public host key files are configured
  • 4.2.4 Ensure SSH access is limited
  • 4.2.5 Ensure SSH LogLevel is appropriate
  • 4.2.6 Ensure SSH PAM is enabled
  • 4.2.7 Ensure SSH root login is disabled
  • 4.2.8 Ensure SSH HostbasedAuthentication is disabled
  • 4.2.9 Ensure SSH PermitEmptyPasswords is disabled
  • 4.3.1 Ensure sudo is installed
  • 4.3.2 Ensure sudo commands use pty
  • 4.3.3 Ensure sudo log file exists
  • 4.3.5 Ensure re-authentication for privilege escalation is not disabled globally
  • 4.3.6 Ensure sudo authentication timeout is configured correctly
  • 4.3.7 Ensure access to the su command is restricted
  • 4.4.1 Ensure password creation requirements are configured
  • 4.4.2 Ensure lockout for failed password attempts is configured
  • 4.4.3 Ensure password reuse is limited
  • 4.4.4 Ensure strong password hashing algorithm is configured
  • 4.4.5 Ensure all current passwords uses the configured hashing algorithm
  • 4.5.1.2 Ensure password expiration is 365 days or less
  • 4.5.1.3 Ensure password expiration warning days is 7 or more
  • 4.5.1.4 Ensure inactive password lock is 30 days or less
  • 4.5.1.5 Ensure all users last password change date is in the past
  • 4.5.1.6 Ensure the number of changed characters in a new password is configured
  • 4.5.1.7 Ensure preventing the use of dictionary words for passwords is configured
  • 4.5.2 Ensure system accounts are secured
  • 4.5.3 Ensure default group for the root account is GID 0
  • 4.5.4 Ensure default user umask is 027 or more restrictive
  • 4.5.5 Ensure default user shell timeout is configured
  • 4.5.7 Ensure maximum number of same consecutive characters in a password is configured
  • 5.1.1.1.1 Ensure systemd-journal-remote is installed
  • 5.1.1.1.2 Ensure systemd-journal-remote is configured
  • 5.1.1.1.3 Ensure systemd-journal-remote is enabled
  • 5.1.1.1.4 Ensure journald is not configured to receive logs from a remote client
  • 5.1.1.2 Ensure journald service is enabled
  • 5.1.1.3 Ensure journald is configured to compress large log files
  • 5.1.1.4 Ensure journald is configured to write logfiles to persistent disk
  • 5.1.1.5 Ensure journald is not configured to send logs to rsyslog
  • 5.1.1.6 Ensure journald log rotation is configured per site policy
  • 5.1.1.7 Ensure journald default file permissions configured
  • 5.1.2.1 Ensure rsyslog is installed
  • 5.1.2.2 Ensure rsyslog service is enabled
  • 5.1.2.3 Ensure journald is configured to send logs to rsyslog
  • 5.1.2.4 Ensure rsyslog default file permissions are configured
  • 5.1.2.5 Ensure logging is configured
  • 5.1.2.6 Ensure rsyslog is configured to send logs to a remote log host
  • 5.1.2.7 Ensure rsyslog is not configured to receive logs from a remote client
  • 5.1.3 Ensure all logfiles have appropriate access configured
  • 5.2.4.11 Ensure cryptographic mechanisms are used to protect the integrity of audit tools
  • 6.1.1 Ensure permissions on /etc/passwd are configured
  • 6.1.10 Ensure permissions on /etc/opasswd are configured
  • 6.1.11 Ensure world writable files and directories are secured
  • 6.1.12 Ensure no unowned or ungrouped files or directories exist
  • 6.1.13 Ensure SUID and SGID files are reviewed
  • 6.1.2 Ensure permissions on /etc/passwd- are configured
  • 6.1.3 Ensure permissions on /etc/group are configured
  • 6.1.4 Ensure permissions on /etc/group- are configured
  • 6.1.5 Ensure permissions on /etc/shadow are configured
  • 6.1.6 Ensure permissions on /etc/shadow- are configured
  • 6.1.7 Ensure permissions on /etc/gshadow are configured
  • 6.1.8 Ensure permissions on /etc/gshadow- are configured
  • 6.1.9 Ensure permissions on /etc/shells are configured
  • 6.2.1 Ensure accounts in /etc/passwd use shadowed passwords
  • 6.2.10 Ensure root is the only UID 0 account
  • 6.2.11 Ensure local interactive user home directories are configured
  • 6.2.12 Ensure local interactive user dot files access is configured
  • 6.2.2 Ensure /etc/shadow password fields are not empty
  • 6.2.3 Ensure all groups in /etc/passwd exist in /etc/group
  • 6.2.4 Ensure shadow group is empty
  • 6.2.5 Ensure no duplicate UIDs exist
  • 6.2.6 Ensure no duplicate GIDs exist
  • 6.2.7 Ensure no duplicate user names exist
  • 6.2.8 Ensure no duplicate group names exist
  • 6.2.9 Ensure root PATH Integrity
Miscellaneous
  • Metadata updated.
  • References updated.
  • Variables updated.
Added
  • 2.3.6 Ensure RPC is not installed
  • 4.5.1.1 Ensure minimum days between password changes is configured
Removed
  • 2.3.6 Ensure RPC is not installed
  • 4.5.1.1 Ensure minimum days between password changes is configured
Revision 1.17

May 7, 2024

Functional Update
  • 2.1.2.1 Ensure chrony is configured with authorized timeserver
  • 2.1.2.2 Ensure chrony is running as user _chrony
  • 2.1.2.3 Ensure chrony is enabled and running
Revision 1.16

Apr 22, 2024

Functional Update
  • 5.1.2.6 Ensure rsyslog is configured to send logs to a remote log host
Revision 1.15

Apr 10, 2024

Functional Update
  • 1.8.2 Ensure GDM login banner is configured
  • 1.8.3 Ensure GDM disable-user-list option is enabled
  • 1.8.4 Ensure GDM screen locks when the user is idle
  • 1.8.5 Ensure GDM screen locks cannot be overridden
  • 1.8.6 Ensure GDM automatic mounting of removable media is disabled
  • 1.8.7 Ensure GDM disabling automatic mounting of removable media is not overridden
  • 1.8.8 Ensure GDM autorun-never is enabled
  • 1.8.9 Ensure GDM autorun-never is not overridden
Revision 1.14

Mar 18, 2024

Functional Update
  • 3.1.2 Ensure wireless interfaces are disabled
  • 4.2.2 Ensure permissions on SSH private host key files are configured
  • 4.2.3 Ensure permissions on SSH public host key files are configured
  • 5.1.3 Ensure all logfiles have appropriate access configured
  • 6.1.11 Ensure world writable files and directories are secured
  • 6.1.12 Ensure no unowned or ungrouped files or directories exist
  • 6.1.13 Ensure SUID and SGID files are reviewed
  • 6.2.12 Ensure local interactive user dot files access is configured
Miscellaneous
  • Variables updated.
Revision 1.13

Mar 1, 2024

Functional Update
  • 3.4.1.7 Ensure ufw default deny firewall policy