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The application of the Data Origin Authentication pattern and the Data Confidentiality pattern do not help mitigate the risk of malicious intermediary attacks.
A service composition is made up of services from a particular domain service inventory. All of the services belonging to the domain service inventory are deployed on the same server. Service A is part of the same domain inventory but is not part of this service composition. Service A becomes a victim of an XML parser attack resulting in its unavailability. However, because the services in the service composition rely on the same XML parser used by Service A, the service composition can also be affected by this attack.
Service A has recently been the victim of XPath injection attacks. Messages sent between Service A and Service C have traditionally been protected via transport-layer security. A redesign of the service composition architecture introduces Service B, which is positioned as an intermediary service between Service A and Service C . The Message Screening pattern was applied to the design of Service B . As part of the new service composition architecture, transport-layer security is replaced with message-layer security for all services, but Service A and Service C continue to share the same encryption key. After the new service composition goes live, Service A continues to be subjected to XPath injection attacks. What is the reason for this?
An ESB is introduced into an IT enterprise, primarily to enable communication between a set of disparate Web services. As a first step, the ESB needs to be configured to carry out data model transformation in order to overcome differences in the XML schemas used by the Web services. However, the messages exchanged by the Web services need to be encrypted. What needs to be done in order for the ESB to enable communication between the Web services without compromising message confidentiality?
Architects have applied the Service Perimeter Guard pattern to a service inventory by adding a perimeter service inside the firewall that receives all incoming request messages and then routes them to the appropriate services. The firewall has been configured to allow any service consumers to send messages to the perimeter service. You are told that this security architecture is flawed. Which of the following statements describes a valid approach for improving the security architecture?
