II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000027
Group -
Exchange must have Administrator audit logging enabled.
Unauthorized or malicious data changes can compromise the integrity and usefulness of the data. Automated attacks or malicious users with elevated privileges have the ability to effect change using...Rule Medium Severity -
SRG-APP-000033
Group -
Exchange Servers must use approved DoD certificates.
Server certificates are required for many security features in Exchange; without them, the server cannot engage in many forms of secure communication. Failure to implement valid certificates make...Rule Medium Severity -
SRG-APP-000038
Group -
Exchange auto-forwarding email to remote domains must be disabled or restricted.
Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An attacker might use this information to conduct future attacks. Verify Aut...Rule Medium Severity -
SRG-APP-000089
Group -
Exchange Connectivity logging must be enabled.
A connectivity log is a record of the SMTP connection activity of the outbound message delivery queues to the destination Mailbox server, smart host, or domain. Connectivity logging is available on...Rule Medium Severity -
SRG-APP-000089
Group -
The Exchange Email Diagnostic log level must be set to the lowest level.
Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Diagnostic logging, however, characterist...Rule Medium Severity -
SRG-APP-000089
Group -
Exchange Audit record parameters must be set.
Log files help establish a history of activities, and can be useful in detecting attack attempts. This item declares the fields that must be available in the audit log file in order to adequately r...Rule Low Severity -
SRG-APP-000098
Group -
Exchange Circular Logging must be disabled.
Logging provides a history of events performed and can also provide evidence of tampering or attack. Failure to create and preserve logs adds to the risk that suspicious events may go unnoticed and...Rule Low Severity -
SRG-APP-000098
Group -
Exchange Email Subject Line logging must be disabled.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. When “message tracking” is enabled, only t...Rule Medium Severity -
SRG-APP-000098
Group -
Exchange Message Tracking Logging must be enabled.
A message tracking log provides a detailed log of all message activity as messages are transferred to and from a computer running Exchange. If events are not recorded, it may be difficult or impos...Rule Medium Severity -
SRG-APP-000111
Group -
Exchange Queue monitoring must be configured with threshold and action.
Monitors are automated "process watchers" that respond to performance changes and can be useful in detecting outages and alerting administrators where attention is needed. Exchange has built-in mon...Rule Medium Severity -
SRG-APP-000141
Group -
Exchange Send Fatal Errors to Microsoft must be disabled.
It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and...Rule Medium Severity -
SRG-APP-000118
Group -
Exchange must protect audit data against unauthorized read access.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be considere...Rule Medium Severity -
SRG-APP-000141
Group -
Exchange must not send Customer Experience reports to Microsoft.
It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and...Rule Medium Severity -
SRG-APP-000119
Group -
Exchange must protect audit data against unauthorized access.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be considere...Rule Medium Severity -
SRG-APP-000120
Group -
Exchange must protect audit data against unauthorized deletion.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be considere...Rule Medium Severity -
SRG-APP-000125
Group -
Exchange Audit data must be on separate partitions.
Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be considere...Rule Medium Severity -
SRG-APP-000131
Group -
Exchange Local machine policy must require signed scripts.
Scripts often provide a way for attackers to infiltrate a system, especially those downloaded from untrusted locations. By setting machine policy to prevent unauthorized script executions, unantici...Rule Medium Severity -
SRG-APP-000141
Group -
The Exchange IMAP4 service must be disabled.
The IMAP4 protocol is not approved for use within the DoD. It uses a clear-text-based user name and password and does not support the DoD standard for PKI for email access. User name and password c...Rule Medium Severity -
SRG-APP-000141
Group -
The Exchange POP3 service must be disabled.
The POP3 protocol is not approved for use within the DoD. It uses a clear-text-based user name and password and does not support the DoD standard for PKI for email access. User name and password co...Rule Medium Severity -
SRG-APP-000211
Group -
Exchange Mailbox databases must reside on a dedicated partition.
In the same way that added security layers can provide a cumulative positive effect on security posture, multiple applications can provide a cumulative negative effect. A vulnerability and subseque...Rule Medium Severity -
SRG-APP-000213
Group -
Exchange Internet-facing Send connectors must specify a Smart Host.
When identifying a "Smart Host" for the email environment, a logical Send connector is the preferred method. A Smart Host acts as an Internet-facing concentrator for other email servers. Appropria...Rule Medium Severity -
SRG-APP-000219
Group -
Exchange internal Receive connectors must require encryption.
The Simple Mail Transfer Protocol (SMTP) Receive connector is used by Exchange to send and receive messages from server to server using SMTP protocol. This setting controls the encryption strength ...Rule Medium Severity -
SRG-APP-000219
Group -
Exchange internal Receive connectors must use Domain Security (mutual authentication Transport Layer Security).
The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. There are several controls that work together to provide security between ...Rule Medium Severity -
SRG-APP-000219
Group -
Exchange internal Send connectors must require encryption.
The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. There are several controls that work together to provide security between ...Rule Medium Severity -
SRG-APP-000231
Group -
Exchange Public Folder stores must be retained until backups are complete.
Backup and recovery procedures are an important part of overall system availability and integrity. Complete backups reduce the chance of accidental deletion of important information and make it pos...Rule Medium Severity
Node 2
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