Configuring DISA STIG Compliance for Ubuntu Linux Server

UBTU-20-010000

The Ubuntu operating system must provision temporary user accounts with an expiration time of 72 hours or less.

Not applicable. A hardened repository does not use temporary user accounts.

UBTU-20-010002

The Ubuntu operating system must enable the graphical user logon banner to display the Standard Mandatory DoD Notice and Consent Banner before granting local access to the system through a graphical user logon.

Not applicable. The operating system is installed without GUI.

UBTU-20-010003

The Ubuntu operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting local access to the system through a graphical user logon.

Not applicable.The operating system is installed without GUI.

UBTU-20-010004

The Ubuntu operating system must retain a user's session lock until that user reestablishes access using established identification and authentication procedures.

Not applicable.The operating system is installed without GUI.

UBTU-20-010005

The Ubuntu operating system must allow users to directly initiate a session lock for all connection types.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010006

The Ubuntu operating system must map the authenticated identity to the user or group account for PKI-based authentication.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010007

The Ubuntu operating system must enforce 24 hours/1 day as the minimum password lifetime. Passwords for new users must have a 24 hours/1 day minimum password lifetime restriction.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010008

The Ubuntu operating system must enforce a 60-day maximum password lifetime restriction. Passwords for new users must have a 60-day maximum password lifetime restriction.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010010

The Ubuntu operating system must uniquely identify interactive users.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010013

The Ubuntu operating system must automatically terminate a user session after inactivity timeouts have expired.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010014

The Ubuntu operating system must require users to reauthenticate for privilege escalation or when changing roles.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010016

The Ubuntu operating system default filesystem permissions must be defined in such a way that all authenticated users can read and modify only their own files.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010033

The Ubuntu operating system must implement smart card logins for multifactor authentication for local and network access to privileged and non-privileged accounts.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010035

The Ubuntu operating system must use strong authenticators in establishing nonlocal maintenance and diagnostic sessions.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010036

The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic after a period of inactivity.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010037

The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic at the end of the session or after 10 minutes of inactivity.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010038

The Ubuntu operating system must display the Standard Mandatory DoD Notice and Consent Banner before granting any local or remote connection to the system.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam. A consent banner includes the following text: "WARNING: Unauthorized access to this system is forbidden and will be prosecuted by law. By accessing this system, you agree that your actions may be monitored if unauthorized usage is suspected".

UBTU-20-010043

The Ubuntu operating system must configure the SSH daemon to use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hashes to prevent the unauthorized disclosure of information and detect changes to information during transmission.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010044

The Ubuntu operating system must configure the SSH daemon to use FIPS 140-2 approved ciphers to prevent the unauthorized disclosure of information and detect changes to information during transmission.

Not applicable. SSH connection is necessary only for the deployment and upgrade of Veeam Data Mover and can be disabled after you add the hardened repository to the backup infrastructure.

UBTU-20-010047

The Ubuntu operating system must not allow unattended or automatic login through SSH.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010048

The Ubuntu operating system must be configured so that remote X connections are disabled, unless to fulfill documented and validated mission requirements.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010049

The Ubuntu operating system SSH daemon must prevent remote hosts from connecting to the proxy display.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010050

The Ubuntu operating system must enforce password complexity by requiring that at least one upper-case character be used.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010051

The Ubuntu operating system must enforce password complexity by requiring that at least one lower-case character be used.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010052

The Ubuntu operating system must enforce password complexity by requiring that at least one numeric character be used.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010053

The Ubuntu operating system must require the change of at least 8 characters when passwords are changed.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010054

The Ubuntu operating system must enforce a minimum 15-character password length.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010055

The Ubuntu operating system must enforce password complexity by requiring that at least one special character be used.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010056

The Ubuntu operating system must prevent the use of dictionary words for passwords.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010057

The Ubuntu operating system must be configured so that when passwords are changed or new passwords are established, pwquality must be used.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010060

The Ubuntu operating system, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.

Not applicable. A hardened repository does not use PKI-based authentication.

UBTU-20-010063

The Ubuntu operating system must implement multifactor authentication for remote access to privileged accounts in such a way that one of the factors is provided by a device separate from the system gaining access.

Not applicable. A hardened repository does not use remote access to privileged accounts.

UBTU-20-010064

The Ubuntu operating system must accept Personal Identity Verification (PIV) credentials.

Not applicable. A hardened repository does not use interactive users and smart cards.

UBTU-20-010065

The Ubuntu operating system must electronically verify Personal Identity Verification (PIV) credentials.

Not applicable. A hardened repository does not use interactive users and smart cards.

UBTU-20-010066

The Ubuntu operating system for PKI-based authentication, must implement a local cache of revocation data in case of the inability to access revocation information through the network.

Not applicable. A hardened repository does not use interactive users and smart cards.

UBTU-20-010070

The Ubuntu operating system must prohibit password reuse for a minimum of five generations.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010072

The Ubuntu operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts have been made.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010074

The Ubuntu operating system must be configured so that the script which runs each 30 days or less to check file integrity is the default one.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010075

The Ubuntu operating system must enforce a delay of at least 4 seconds between logon prompts following a failed logon attempt.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010100

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/passwd.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010101

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/group.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010102

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/shadow.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010103

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/gshadow.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010104

The Ubuntu operating system must generate audit records for all account creations, modifications, disabling, and termination events that affect /etc/opasswd.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010117

The Ubuntu operating system must alert the ISSO and SA (at a minimum) in the event of an audit processing failure.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010118

The Ubuntu operating system must shut down by default upon audit failure (unless availability is an overriding concern).

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010122

The Ubuntu operating system must be configured so that audit log files are not read or write-accessible by unauthorized users.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010123

The Ubuntu operating system must be configured to permit only authorized users ownership of the audit log files.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010124

The Ubuntu operating system must permit only authorized groups ownership of the audit log files.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010128

The Ubuntu operating system must be configured so that the audit log directory is not write-accessible by unauthorized users.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010133

The Ubuntu operating system must be configured so that audit configuration files are not write-accessible by unauthorized users.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010134

The Ubuntu operating system must permit only authorized accounts to own the audit configuration files.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010135

The Ubuntu operating system must permit only authorized groups to own the audit configuration files.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010136

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the su command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010137

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chfn command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010138

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the mount command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010139

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the umount command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010140

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the ssh-agent command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010141

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the ssh-keysign command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010142

The Ubuntu operating system must generate audit records for any use of the setxattr, fsetxattr, lsetxattr, removexattr, fremovexattr, and lremovexattr system calls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010148

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chown, fchown, fchownat, and lchown system calls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010152

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chmod, fchmod, and fchmodat system calls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010155

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the creat, open, openat, open_by_handle_at, truncate, and ftruncate system calls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010161

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the sudo command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010162

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the sudoedit command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010163

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chsh command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010164

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the newgrp command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010165

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chcon command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010166

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the apparmor_parser command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010167

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the setfacl command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010168

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chacl command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010169

The Ubuntu operating system must generate audit records for the use and modification of the tallylog file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010170

The Ubuntu operating system must generate audit records for the use and modification of faillog file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010171

The Ubuntu operating system must generate audit records for the use and modification of the lastlog file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010172

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the passwd command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010173

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the unix_update command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010174

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the gpasswd command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010175

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the chage command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010176

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the usermod command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010177

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the crontab command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010178

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the pam_timestamp_check command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010179

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the init_module and finit_module syscalls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010181

The Ubuntu operating system must generate audit records for successful/unsuccessful uses of the delete_module syscall.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010182

The Ubuntu operating system must produce audit records and reports containing information to establish when, where, what type, the source, and the outcome for all DoD-defined auditable events and actions in near real time.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010198

The Ubuntu operating system must initiate session audits at system start-up.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010199

The Ubuntu operating system must configure audit tools with a mode of 0755 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010200

The Ubuntu operating system must configure audit tools to be owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010201

The Ubuntu operating system must configure the audit tools to be group-owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010205

The Ubuntu operating system must use cryptographic mechanisms to protect the integrity of audit tools.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010211

The Ubuntu operating system must prevent all software from executing at higher privilege levels than users executing the software and the audit system must be configured to audit the execution of privileged functions.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010215

The Ubuntu operating system must allocate audit record storage capacity to store at least one weeks' worth of audit records, when audit records are not immediately sent to a central audit record storage facility.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010216

The Ubuntu operating system audit event multiplexor must be configured to off-load audit logs onto a different system or storage media from the system being audited.

Applicable if the infrastructure have such components. To configure the setting manually, see this DISA STIG article.

UBTU-20-010217

The Ubuntu operating system must immediately notify the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75% of the repository maximum audit record storage capacity.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010230

The Ubuntu operating system must record time stamps for audit records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT).

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010244

The Ubuntu operating system must generate audit records for privileged activities, nonlocal maintenance, diagnostic sessions and other system-level access.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010267

The Ubuntu operating system must generate audit records for any successful/unsuccessful use of unlink, unlinkat, rename, renameat, and rmdir system calls.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010277

The Ubuntu operating system must generate audit records for the /var/log/wtmp file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010278

The Ubuntu operating system must generate audit records for the /var/run/utmp file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010279

The Ubuntu operating system must generate audit records for the /var/log/btmp file.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010296

The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use modprobe command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010297

The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the kmod command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010298

The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the fdisk command.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010300

The Ubuntu operating system must have a crontab script running weekly to offload audit events of standalone systems.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010400

The Ubuntu operating system must limit the number of concurrent sessions to ten for all accounts or account types.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010403

The Ubuntu operating system must monitor remote access methods.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010404

The Ubuntu operating system must encrypt all stored passwords with a FIPS 140-2 approved cryptographic hashing algorithm.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010405

The Ubuntu operating system must not have the telnet package installed.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010406

The Ubuntu operating system must not have the rsh-server package installed.

To configure the setting manually, see this DISA STIG article

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010407

The Ubuntu operating system must be configured to prohibit or restrict the use of functions, ports, protocols, and services, as defined in the PPSM CAL and vulnerability assessments.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010408

The Ubuntu operating system must prevent direct login into the root account.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010409

The Ubuntu operating system must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010410

The Ubuntu operating system must automatically remove or disable emergency accounts after 72 hours.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010411

The Ubuntu operating system must set a sticky bit on all public directories to prevent unauthorized and unintended information transferred through shared system resources.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010412

The Ubuntu operating system must be configured to use TCP syncookies.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010413

The Ubuntu operating system must disable kernel core dumps so that it can fail to a secure state if system initialization fails, shutdown fails or aborts fail.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010415

The Ubuntu operating system must deploy Endpoint Security for Linux Threat Prevention (ENSLTP).

Not applicable. A hardened repository must not have any third party software installed.

UBTU-20-010416

The Ubuntu operating system must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010417

The Ubuntu operating system must configure the /var/log directory to be group-owned by syslog.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010418

The Ubuntu operating system must configure the /var/log directory to be owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010419

The Ubuntu operating system must configure the /var/log directory to have mode "0755" or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010420

The Ubuntu operating system must configure the /var/log/syslog file to be group-owned by adm.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010421

The Ubuntu operating system must configure /var/log/syslog file to be owned by syslog.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010422

The Ubuntu operating system must configure /var/log/syslog file with mode 0640 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010423

The Ubuntu operating system must have directories that contain system commands set to a mode of 0755 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010424

The Ubuntu operating system must have directories that contain system commands owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010425

The Ubuntu operating system must have directories that contain system commands group-owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010426

The Ubuntu operating system library files must have mode 0755 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010427

The Ubuntu operating system library directories must have mode 0755 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010428

The Ubuntu operating system library files must be owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010429

The Ubuntu operating system library directories must be owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010430

The Ubuntu operating system library files must be group-owned by root or a system account.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010431

The Ubuntu operating system library directories must be group-owned by root.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010432

The Ubuntu operating system must be configured to preserve log records from failure events.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010433

The Ubuntu operating system must have an installed application firewall to control remote access methods.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010434

The Ubuntu operating system must enable and run the uncomplicated firewall (ufw).

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010435

The Ubuntu operating system must, for networked systems, compare internal information system clocks at least every 24 hours with a server which is synchronized to one of the redundant United States Naval Observatory (USNO) time servers, or a time server designated for the appropriate DoD network (NIPRNet/SIPRNet), or the Global Positioning System (GPS).

To configure the setting manually, see this DISA STIG article. Note that you must set the "-R" flag in the /etc/defaults/chrony file.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010436

The Ubuntu operating system must synchronize internal information system clocks to the authoritative time source when the time difference is greater than one second.

Not applicable. A hardened repository uses additional parameter to be compliant with STIG UBTU-20-010435.

UBTU-20-010437

The Ubuntu operating system must notify designated personnel if baseline configurations are changed in an unauthorized manner. The file integrity tool must notify the System Administrator when changes to the baseline configuration or anomalies in the operating system are detected.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010438

The Ubuntu operating system's Advance Package Tool (APT) must be configured to prevent the installation of patches, service packs, device drivers, or Ubuntu operating system components without verification they have been digitally signed using a certificate that is recognized and approved by the organization.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010439

The Ubuntu operating system must be configured to use AppArmor.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010440

The Ubuntu operating system must allow the use of a temporary password for system logons with an immediate change to a permanent password.

Not applicable. A hardened repository uses only a root account and a non-root account with reduced permissions.

UBTU-20-010441

The Ubuntu operating system must be configured such that Pluggable Authentication Module (PAM) prohibits the use of cached authentications after one day.

Not applicable.

UBTU-20-010442

The Ubuntu operating system must implement NIST FIPS-validated cryptography to protect classified information and for the following: to provision digital signatures, to generate cryptographic hashes, and to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive Orders, directives, policies, regulations, and standards.

Not applicable.

UBTU-20-010443

The Ubuntu operating system must only allow the use of DoD PKI-established certificate authorities for verification of the establishment of protected sessions.

Not applicable. A hardened repository does not use smart card authentication.

UBTU-20-010444

Ubuntu operating system must implement cryptographic mechanisms to prevent unauthorized modification of all information at rest.

To protect data in backups, use Veeam Backup & Replication built-in encryption. For more information, see Storage Settings.

UBTU-20-010445

Ubuntu operating system must implement cryptographic mechanisms to prevent unauthorized disclosure of all information at rest.

To protect data in backups, use Veeam Backup & Replication built-in encryption. For more information, see Storage Settings.

UBTU-20-010446

The Ubuntu operating system must configure the uncomplicated firewall to rate-limit impacted network interfaces.

Not applicable.

UBTU-20-010447

The Ubuntu operating system must implement non-executable data to protect its memory from unauthorized code execution.

To configure the setting manually, see this DISA STIG article.

UBTU-20-010448

The Ubuntu operating system must implement address space layout randomization to protect its memory from unauthorized code execution.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010449

The Ubuntu operating system must be configured so that Advance Package Tool (APT) removes all software components after updated versions have been installed.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010450

The Ubuntu operating system must use a file integrity tool to verify correct operation of all security functions.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010451

The Ubuntu operating system must notify designated personnel if baseline configurations are changed in an unauthorized manner. The file integrity tool must notify the System Administrator when changes to the baseline configuration or anomalies in the operation of any security functions are discovered.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010453

The Ubuntu operating system must display the date and time of the last successful account logon upon logon.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010454

The Ubuntu operating system must have an application firewall enabled.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010456

The Ubuntu operating system must have system commands set to a mode of 0755 or less permissive.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010457

The Ubuntu operating system must have system commands owned by root or a system account.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010458

The Ubuntu operating system must have system commands group-owned by root or a system account.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010459

The Ubuntu operating system must disable the x86 [Ctrl+Alt+Delete] key combination if a graphical user interface is installed.

Not applicable. The operating system is installed without GUI.

UBTU-20-010460

The Ubuntu operating system must disable the x86 [Ctrl+Alt+Delete] key combination.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010462

The Ubuntu operating system must not have accounts configured with blank or null passwords.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010463

The Ubuntu operating system must not allow accounts configured with blank or null passwords.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.

UBTU-20-010461

The Ubuntu operating system must disable automatic mounting of Universal Serial Bus (USB) mass storage driver.

To configure the setting manually, see this DISA STIG article.

This setting is also included to the automatic configuration script provided by Veeam.