ISC2 Certified Cloud Security Professional (CCSP) Practice Question
While performing STRIDE threat modeling for a new multi-tenant SaaS that will run on a public IaaS provider, the development team wants to highlight cloud-specific risks that were not present in their former on-premises deployment. Which risk is MOST directly tied to the provider's virtualization layer and therefore requires special attention in the secure SDLC?
SQL injection against the application's data layer
Compromise of the hypervisor through a VM escape attack that allows access to other tenants' instances
Traditional buffer overflow in native code libraries used by the application
End-user phishing campaigns that harvest SaaS credentials
Hypervisor or virtual machine (VM) escape exploits a flaw in the virtualization layer that allows a malicious guest to break isolation and gain access to the host or to other guest instances belonging to different customers. Because public clouds rely heavily on resource pooling and multi-tenancy, a successful escape could compromise data across tenants and violates one of the fundamental cloud isolation controls. The other options-SQL injection, phishing campaigns, and native-code buffer overflows-are important application risks but are not unique to cloud virtualization and would be assessed in any environment.
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What is a hypervisor and why is it important in cloud environments?
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Application Security
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