312-49V11 · Question #75
In a sophisticated cloud attack, assailants strategically deploy virtual machines (VMs) in close proximity to target servers. Leveraging shared physical resources, they execute side-channel attacks…
The correct answer is C. Exploitation of Shared Resources for Side-Channel Attacks. According to the CHFI v11 Cloud Forensics objectives, cloud environments rely heavily on virtualization, where multiple virtual machines share the same underlying physical hardware such as CPU caches, memory, storage, and network interfaces. Attackers can exploit this shared…
Question
In a sophisticated cloud attack, assailants strategically deploy virtual machines (VMs) in close proximity to target servers. Leveraging shared physical resources, they execute side-channel attacks, extracting sensitive data through timing vulnerabilities. Subsequently, they exploit stolen credentials to impersonate legitimate users, posing a grave security risk. How do attackers compromise cloud security by exploiting the proximity of virtual machines (VMs) to target servers?
Options
- ATargeted VM Overloading for Side-Channel Attacks
- BCloud Infrastructure Breach via DNS Hijacking
- CExploitation of Shared Resources for Side-Channel Attacks
- DApplication Layer Exploitation for SQL Injection
How the community answered
(15 responses)- A7% (1)
- B7% (1)
- C73% (11)
- D13% (2)
Explanation
According to the CHFI v11 Cloud Forensics objectives, cloud environments rely heavily on virtualization, where multiple virtual machines share the same underlying physical hardware such as CPU caches, memory, storage, and network interfaces. Attackers can exploit this shared- resource model by intentionally placing malicious VMs on the same physical host as the victim VM, a technique often referred to as co-residency attacks. Once co-residency is achieved, attackers perform side-channel attacks that analyze indirect indicators such as cache timing, memory access patterns, or CPU usage to infer sensitive information. This scenario precisely describes the exploitation of shared resources for side-channel attacks. Timing vulnerabilities in shared CPU caches or memory buses allow attackers to extract cryptographic keys, credentials, or other sensitive data without directly breaching the target system. After obtaining credentials, attackers may impersonate legitimate users, escalating the impact of the attack.
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