II - Mission Support Public
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000125
Group -
The operating system must employ strong authenticators in the establishment of nonlocal maintenance and diagnostic sessions.
If maintenance tools are used by unauthorized personnel, they may accidentally or intentionally damage or compromise the system. The act of managing systems and applications includes the ability to...Rule High Severity -
SRG-OS-000132
Group -
The operating system must separate user functionality (including user interface services) from operating system management functionality.
Operating system management functionality includes functions necessary for administration and requires privileged user access. Allowing non-privileged users to access operating system management fu...Rule Medium Severity -
SRG-OS-000134
Group -
The operating system must isolate security functions from nonsecurity functions.
An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and...Rule Medium Severity -
SRG-OS-000138
Group -
Operating systems must prevent unauthorized and unintended information transfer via shared system resources.
Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of information, produced by the actions of prior users/roles (or the actions of ...Rule Medium Severity -
SRG-OS-000142
Group -
The operating system must manage excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of Denial of Service (DoS) attacks.
DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. Managing ex...Rule Medium Severity -
SRG-OS-000163
Group -
The operating system 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.
Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port th...Rule Medium Severity -
SRG-OS-000184
Group -
The operating system must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized access to system resources. Operating systems that fail suddenly and with no ...Rule Medium Severity -
SRG-OS-000185
Group -
The operating system must protect the confidentiality and integrity of all information at rest.
Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive, when used for backups) within an operating system. This re...Rule Medium Severity -
SRG-OS-000205
Group -
The operating system must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.
Any operating system providing too much information in error messages risks compromising the data and security of the structure, and content of error messages needs to be carefully considered by t...Rule Medium Severity -
SRG-OS-000206
Group -
The operating system must reveal error messages only to authorized users.
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the operating system or pla...Rule Medium Severity
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