The correct answer is a Local File Inclusion (LFI) vulnerability in a PHP include statement. This is because the scenario describes an attacker reading arbitrary files from the server, which is the hallmark of LFI: when user input, such as a `page` parameter, is passed unsanitized to functions like `include()` or `require()`, an attacker can manipulate the path with directory traversal sequences (e.g., `../../etc/passwd`) to include and expose local files. On the Systems Security Certified Practitioner (SSCP) exam, this question tests your ability to distinguish LFI from other web attacks like SQL injection or command injection; the key clue is the server’s filesystem access via Apache with mod_php. A common trap is confusing LFI with Remote File Inclusion (RFI), but remember: LFI reads local files only, while RFI pulls external resources. Memory tip: “Local means look at the server’s own disk—no external URLs allowed.”
SSCP Systems and Application Security Practice Question
This SSCP practice question tests your understanding of systems and application security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A security analyst reviews logs and finds that an attacker exploited a vulnerability in a web application to read arbitrary files from the server. The application runs on Apache with mod_php. Which of the following is the MOST likely vulnerability?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Local File Inclusion (LFI) vulnerability in a PHP include statement.
The correct answer is D because the scenario describes reading arbitrary files from the server, which is the hallmark of a Local File Inclusion (LFI) vulnerability. In a PHP application using include statements, an attacker can manipulate a file path parameter (e.g., `?page=../../etc/passwd`) to include and read local files, exploiting the server's filesystem access. Apache with mod_php is particularly susceptible to LFI when user input is not sanitized before being passed to functions like `include()` or `require()`.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
XML External Entity (XXE) vulnerability.
Why it's wrong here
XXE can read files but typically requires XML processing.
✗
Remote File Inclusion (RFI) vulnerability.
Why it's wrong here
RFI includes remote files, not reading local files.
✗
Server-Side Request Forgery (SSRF) vulnerability.
Why it's wrong here
SSRF makes requests to internal resources, not reading files directly.
✓
Local File Inclusion (LFI) vulnerability in a PHP include statement.
Why this is correct
LFI allows reading local files via path traversal.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse LFI with RFI because both involve file inclusion, but the key distinction is that LFI reads local files from the server, while RFI requires remote file inclusion, which is less common and often blocked by default PHP settings.
Detailed technical explanation
How to think about this question
LFI exploits occur when user-controlled input is passed to PHP functions like `include()`, `require()`, or `file_get_contents()` without proper sanitization, allowing path traversal (e.g., `../`) to access sensitive files like `/etc/passwd` or application source code. In Apache with mod_php, the `open_basedir` directive can restrict file access, but it is often misconfigured or not enforced, making LFI a common attack vector. Real-world examples include the 2017 Equifax breach, where an LFI in Apache Struts allowed attackers to read configuration files and execute commands.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Systems and Application Security — This question tests Systems and Application Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Local File Inclusion (LFI) vulnerability in a PHP include statement. — The correct answer is D because the scenario describes reading arbitrary files from the server, which is the hallmark of a Local File Inclusion (LFI) vulnerability. In a PHP application using include statements, an attacker can manipulate a file path parameter (e.g., `?page=../../etc/passwd`) to include and read local files, exploiting the server's filesystem access. Apache with mod_php is particularly susceptible to LFI when user input is not sanitized before being passed to functions like `include()` or `require()`.
What should I do if I get this SSCP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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