The SecOps Group CAP - Certified AppSec Practitioner Exam

The screenshot shows an HTTP POST request to /upload.php with a multipart/form-data payload, where the attacker uploads a file named malicious.php disguised as an image/jpeg but containing PHP code (). This indicates an attempt to exploit aFile Upload Vulnerability. Such vulnerabilities occur when an application allows users to upload files without proper validation or sanitization, enabling attackers to upload malicious scripts (e.g., PHP) that can be executed on the server. In this case, if the server executes the uploaded malicious.php, it could expose server information via phpinfo() or perform other malicious actions.

Option A ("HTTP Desync Attack") involves manipulating HTTP request pipelines, which is not relevant here as the request appears standard. Option B ("File Path Traversal Attack") involves accessing unauthorized files using ../, which is not evident in this request. Option D ("Server-Side Request Forgery") involves tricking the server into making unintended requests, which does not apply to file uploads. Thus, C is the correct answer, aligning with the CAP syllabus under "File Handling Security" and "OWASP Top 10 (A05:2021 - Security Misconfiguration)."References: SecOps Group CAP Documents - "File Upload Vulnerabilities," "Input Validation," and "OWASP Top 10" sections.

The request is a GET to /userProfile.php with a sessionId parameter matching the JSESSIONID cookie, and the response is a 200 OK with an HTML page. Let’s evaluate the statements:

Option A ("The application uses an insecure channel (non-TLS)"): The request uses http:// (inferred from the absence of https:// in the Host and GET line), indicating a non-TLS channel. However, the question asks about the "application" (likely the server-side behavior), and the response does not explicitly confirm the channel used for the response. Modern browsers might enforce TLS, but the request suggests an insecure channel. This could be true, but it depends on the server’s configuration, making it less certain without further context.

Option B ("The application uses an insecure HTTP method (GET) to send sensitive information"): Correct. The sessionId parameter in the URL (/userProfile.php?sessionId=7576572ce164646de967c759643d53031) is sensitive data, as it could be used to hijack the user’s session. Using GET exposes this data in browser history, server logs, and referral headers, which is insecure. Best practice is to use POST for sensitive data to avoid such exposure. The JSESSIONID cookie is marked HttpOnly, mitigating some risks, but the sessionId in the URL remains a vulnerability.

Option C ("The application is vulnerable to Cross-Site Scripting attacks"): The response includes an HTML page with no visible user input or script execution. There’s no evidence of unsanitized input or script injection (e.g., no dynamic content like