A penetration tester is evaluating the security of a new mobile banking application. Upon reviewing the app's architecture, the tester discovers that the application is using an outdated third-party library known to have critical vulnerabilities that could lead to remote code execution. Before reporting this finding, the tester seeks to validate the vulnerability. Which of the following steps should the tester take to confirm the vulnerability?
Scan the application with a generic mobile vulnerability assessment tool to identify all possible weaknesses.
Modify the app source code to patch the library and observe changes in the app's behavior during runtime.
Intercept traffic between the mobile application and its backend services to identify information leaks.
Analyze public vulnerability reports of the outdated library to create a proof-of-concept exploit confirming the issue.
Analyzing the outdated library's public vulnerability reports and then crafting a proof-of-concept (PoC) exploit based on this information is the correct course of action to validate a vulnerability. Since the vulnerability is already known and documented, leveraging that information to prove impact within the application is efficient and provides solid evidence of the risk. Scanning with a generic vulnerability assessment tool may not be as effective in this scenario, since the tool might not target the specific outdated component. Modifying the app's source code or traffic interception without understanding the specific vulnerability details would be premature and might not yield conclusive evidence of the vulnerability.
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What is a proof-of-concept (PoC) exploit, and how is it used in penetration testing?
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Why is it important to analyze public vulnerability reports?
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What are the risks of using outdated third-party libraries in an application?