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CS0-003 Vulnerability Management Practice Question

A security analyst is using Burp Suite to test a web application for vulnerabilities. Which TWO of the following are common web application vulnerabilities that can be detected using Burp Suite? (Select TWO)

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Cross-site scripting (XSS)

Burp Suite can detect SQL injection and XSS through its scanner and manual testing tools. Buffer overflow and race conditions are typically not web application vulnerabilities detected by web proxies. Insecure deserialization can be detected but is less common than SQLi and XSS.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Buffer overflow

    Why it's wrong here

    Buffer overflow: Buffer overflows are a memory-corruption vulnerability that occurs in native code (e.g., C/C++) when data exceeds a buffer's boundary, potentially overwriting adjacent memory. Web applications built on managed languages (Java, .NET, Python) typically prevent this, and Burp Suite operates at the HTTP layer, making it unable to directly exploit or detect memory-level flaws. While a web application could call a vulnerable native library, this is not a standard web vulnerability and is far less relevant to Burp's testing focus than input-based issues.

  • Insecure deserialization

    Why it's wrong here

    Insecure deserialization: Insecure deserialization occurs when an application deserializes untrusted data, allowing an attacker to manipulate object fields or trigger code execution. Burp Suite can test for this by sending crafted serialized payloads (e.g., Java, PHP, .NET), but it is less common than SQLi/XSS and requires deep knowledge of the application's internal classes. Burp's automated scanner is not specifically tuned to detect deserialization flaws as reliably as it does for injection attacks, so this is not a primary finding in routine web testing.

  • Cross-site scripting (XSS)

    Why this is correct

    Cross-site scripting (XSS): XSS is a client-side injection vulnerability where an attacker injects malicious scripts into pages viewed by other users, enabling session hijacking, defacement, or credential theft. Burp Suite is highly effective at detecting XSS because its scanner automatically probes inputs with XSS payloads and its Intercepting Proxy allows manual testing of request/response pairs to confirm sanitization gaps. Since XSS appears in reflected, stored, and DOM-based forms and is pervasive in web applications, it is a classic vulnerability that Burp identifies with high confidence.

  • Race condition

    Why it's wrong here

    Race condition: A race condition is a concurrency flaw where the outcome of a system depends on the timing of multiple processes, leading to unexpected behavior such as unauthorized transactions or data corruption. Burp Suite's core functionality focuses on HTTP message manipulation, session handling, and fuzzing, but it does not natively orchestrate simultaneous requests with precise timing to trigger race windows. While tools like Burp's Turbo Intruder can send concurrent requests, detecting a subtle race condition requires analyzing server-side state, which is not a standard scanner feature, making it rarely a direct finding.

  • SQL injection

    Why this is correct

    SQL injection: SQL injection is a server-side vulnerability where an attacker inserts or manipulates SQL code in user input to alter database queries, potentially retrieving, modifying, or deleting data. Burp Suite's scanner actively tests for SQLi by injecting payloads (e.g., single quotes, UNION, time-based blind) and observing error responses, content differences, or time delays. Its automated scanner and manual repeater tool are specifically designed to confirm and exploit SQL injection, making it one of the most reliably detected serious web vulnerabilities.

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This CS0-004 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CS0-004 exam.