III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000108
<GroupDescription></GroupDescription>Group -
The VMM must use multifactor authentication for local access to nonprivileged accounts.
<VulnDiscussion> To assure accountability, prevent unauthenticated access, and prevent misuse of the system, privileged users must utilize mu...Rule Medium Severity -
SRG-OS-000109
<GroupDescription></GroupDescription>Group -
The VMM must require individuals to be authenticated with an individual authenticator prior to using a group authenticator.
<VulnDiscussion> To assure individual accountability and prevent unauthorized access, organizational users shall be individually identified a...Rule Medium Severity -
SRG-OS-000112
<GroupDescription></GroupDescription>Group -
The VMM must implement replay-resistant authentication mechanisms for network access to privileged accounts.
<VulnDiscussion>A replay attack may enable an unauthorized user to gain access to the VMM. Authentication sessions between the authenticator ...Rule Medium Severity -
SRG-OS-000113
<GroupDescription></GroupDescription>Group -
The VMM must implement replay-resistant authentication mechanisms for network access to nonprivileged accounts.
<VulnDiscussion>A replay attack may enable an unauthorized user to gain access to the VMM. Authentication sessions between the authenticator ...Rule Medium Severity -
SRG-OS-000114
<GroupDescription></GroupDescription>Group -
The VMM must uniquely identify peripherals before establishing a connection.
<VulnDiscussion>Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Per...Rule Medium Severity -
SRG-OS-000118
<GroupDescription></GroupDescription>Group -
The VMM must disable local account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity.
<VulnDiscussion>Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potenti...Rule Medium Severity -
SRG-OS-000120
<GroupDescription></GroupDescription>Group -
The VMM must use mechanisms meeting the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance for authentication to a cryptographic module.
<VulnDiscussion>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be r...Rule Medium Severity -
SRG-OS-000122
<GroupDescription></GroupDescription>Group -
The VMM must support an audit reduction capability that supports on-demand reporting requirements.
<VulnDiscussion>The ability to generate on-demand reports, including after the audit data has been subjected to audit reduction, greatly faci...Rule Medium Severity -
SRG-OS-000123
<GroupDescription></GroupDescription>Group -
The VMM must automatically remove or disable emergency accounts after the crisis is resolved or 72 hours.
<VulnDiscussion>Emergency accounts are privileged accounts that are established in response to crisis situations where the need for rapid ac...Rule Medium Severity -
SRG-OS-000125
<GroupDescription></GroupDescription>Group -
The VMM must employ strong authenticators in the establishment of nonlocal maintenance and diagnostic sessions.
<VulnDiscussion>If maintenance tools are used by unauthorized personnel, they may accidentally or intentionally damage or compromise the syst...Rule Medium Severity -
SRG-OS-000132
<GroupDescription></GroupDescription>Group -
The VMM must separate user functionality (including user interface services) from VMM management functionality.
<VulnDiscussion>VMM management functionality includes functions necessary for administration and requires privileged user access. Allowing no...Rule Medium Severity -
SRG-OS-000134
<GroupDescription></GroupDescription>Group -
The VMM must isolate security functions from non-security functions.
<VulnDiscussion>An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform...Rule Medium Severity -
SRG-OS-000138
<GroupDescription></GroupDescription>Group -
The VMM must prevent unauthorized and unintended information transfer via shared system resources.
<VulnDiscussion> Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of info...Rule Medium Severity -
SRG-OS-000142
<GroupDescription></GroupDescription>Group -
The VMM must manage excess capacity, bandwidth, or other redundancy to limit the effects of information-flooding types of Denial of Service (DoS) attacks.
<VulnDiscussion>DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot ac...Rule Medium Severity -
SRG-OS-000163
<GroupDescription></GroupDescription>Group -
The VMM must terminate all network connections associated with a communications session at the end of the session, or as follows: for in-band management sessions (privileged sessions), the session must be terminated after 10 minutes of inactivity; and for user sessions (non-privileged session), the session must be terminated after 15 minutes of inactivity, except to fulfill documented and validated mission requirements.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule Medium Severity -
SRG-OS-000184
<GroupDescription></GroupDescription>Group -
The VMM must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
<VulnDiscussion>Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized acces...Rule Medium Severity -
SRG-OS-000185
<GroupDescription></GroupDescription>Group -
The VMM must protect the confidentiality and integrity of all information at rest.
<VulnDiscussion>Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and...Rule Medium Severity -
SRG-OS-000203
<GroupDescription></GroupDescription>Group -
The VMM must check the validity of all data inputs except those specifically identified by the organization.
<VulnDiscussion>Invalid user input occurs when a user inserts data or characters into data entry fields and the VMM is unprepared to process ...Rule Medium Severity -
SRG-OS-000205
<GroupDescription></GroupDescription>Group -
The VMM must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.
<VulnDiscussion>Any VMM providing too much information in error messages risks compromising the data and security of the structure, and conte...Rule Medium Severity -
SRG-OS-000206
<GroupDescription></GroupDescription>Group -
The VMM must reveal system error messages only to authorized users.
<VulnDiscussion>Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an orga...Rule Medium Severity -
SRG-OS-000221
<GroupDescription></GroupDescription>Group -
All interactions among guest VMs must be mediated by the VMM or its service VMs to support proper function.
<VulnDiscussion>Mechanisms to detect and prevent unauthorized communication flow must be configured or provided as part of the VMM design. If...Rule Medium Severity -
SRG-OS-000239
<GroupDescription></GroupDescription>Group -
The VMM must automatically audit account modification.
<VulnDiscussion>Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...Rule Medium Severity -
SRG-OS-000240
<GroupDescription></GroupDescription>Group -
The VMM must automatically audit account disabling actions.
<VulnDiscussion>When VMM accounts are disabled, user accessibility is affected. Once an attacker establishes access to a system, the attacker...Rule Medium Severity -
SRG-OS-000241
<GroupDescription></GroupDescription>Group -
The VMM must automatically audit account removal actions.
<VulnDiscussion>When VMM accounts are removed, user accessibility is affected. Once an attacker establishes access to a system, the attacker ...Rule Medium Severity -
SRG-OS-000242
<GroupDescription></GroupDescription>Group -
All guest VM network communications must be implemented through use of virtual network devices provisioned by the VMM.
<VulnDiscussion>Mechanisms to detect and prevent unauthorized communication flow must be configured or provided as part of the VMM design. If...Rule Medium Severity
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