Threat DF.Auth.AC-iDF-VFC.2.6

URI: DF.Auth.AC-iDF-VFC.2.6

Package: Theft

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Description: Client Client on stolen host CHost injects fake content into the encrypted flow of Data via Service: if an attacker has possession of host CHost and can access client Client, they can access its cryptographic key and inject malicious content into the flow of Data from Client to FlowsTo.

Threat Type: Primary Threat

Matching Pattern:

DF.Auth.AC-iDF-VFC.2.6
MP-AC-iDF-VFC

Finds a data flow not encrypted by a key from a vault, flowing from a client to or via a service, and the associated auth channel which must not be to a trust intermediary, the data and data access, any data fields, and process contexts in which the data flows from the client (of which any can cause the threat). The source of the flow is matched twice, so it can be referred to by either role name (FlowsFrom or Client) in control strategies.

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CSG-AutoSuspendUntrustworthyClientAccess

Access to service Service by client Client may be automatically disabled to prevent authenticated attacks by compromised clients, at the cost of some reduction in availability. This strategy represents a contingency plan, which can be used to reduce risk from some threats but it also triggers other threats representing possible side effects, depending on how likely it is that the contingency plan will need to be activated.

CSG-AutoSuspendUntrustworthyClientAccess-Implementation-Runtime

Access to service Service by client Client has been automatically disabled to prevent authenticated attacks by compromised clients. This strategy represents activation of a contingency plan at runtime, and can be selected to discover what effect this would have on risk levels, allowing this to be used for decision support calculations. Activation at runtime requires Service to be managed by a suitable adaptation framework. The Disable Client Access control should be deselected if and when access by Client to Service has been enabled once again.

CSG-SuspendUntrustworthyClientAccess

Access to service Service by client Client may be temporarily disabled by the process manager ServiceManager to prevent authenticated attacks by compromised or impersonated clients, at the cost of some reduction in availability. This strategy represents a contingency plan, which can be used to reduce risk from some threats. However, it also triggers other threats representing side effects of the policy change, based on how likely it is that the contingency plan will need to be activated.

CSG-SuspendUntrustworthyClientAccess-Implementation-Runtime

Access to service Service by client Client is disabled by the process manager ServiceManager to prevent authenticated attacks by compromised clients. This strategy represents activation of a contingency plan at runtime, and can be selected to discover what effect this would have on risk levels, allowing this to be used for decision support calculations. To activate it at runtime, signal the process manager ServiceManager. The Disable Client Access control should be deselected if and when access by Client to Service has been enabled once again.