Differential Fault Analysis
Differential Fault Analysis
Overview of the Vulnerability
Cryptography is used to ensure secure storage and transmission of data. However, there are a number of best practices that must be followed to ensure the cryptography in use remains secure and does not result in the exposure of sensitive data. The application is vulnerable to a differential fault analysis attack as there are changes to the system's response to specially crafted fault conditions during specific steps of cryptographic operations.
Business Impact
This vulnerability can lead to reputational damage of the company through the impact to customers’ trust, and the ability of an attacker to view data. The severity of the impact to the business is dependent on the sensitivity of the accessible data being transmitted by the application.
Steps to Reproduce
Enable a HTTP interception proxy, such as Burp Suite or OWASP ZAP
Setup {{software}} to intercept and log requests
Use a browser to navigate to: {{URL}}
{{action}} to view unencrypted requests
Proof of Concept (PoC)
The following screenshot(s) demonstrate(s) this vulnerability:
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Guidance
Provide a step-by-step walkthrough with a screenshot on how you exploited the vulnerability. This will speed triage time and result in faster rewards. Please include specific details on where you identified the differential fault analysis attack, how you identified it, and what actions you were able to perform as a result.
Attempt to escalate the vulnerability to perform additional actions. If this is possible, provide a full Proof of Concept (PoC).
Recommendation(s)
Implement robust entropy for the cryptographic algorithms and ensure that the algorithms, protocols, and keys in place are kept up to date. Best practices includes uniform exception handling and ensuring that the system reverts to a known uniform state when faults occur.
For more information, refer to the following resource:
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