Network and Web Application Attacks

During a penetration test, you notice that a web application accepts user input and displays it directly in the browser without sanitization. Which attack is most likely to succeed?

As a network defender, you notice an unusually high number of incomplete TCP three-way handshakes from a single external IP to multiple internal hosts. What is the most likely attack taking place?

You are performing a web application security assessment and discover that the application uses a hidden form field named 'price' to store the product price. The price is submitted with the form and used to process payments. Which attack would allow you to purchase an item for a lower price?

A network administrator wants to prevent an attacker from using a network sniffer to capture traffic between a client and a web server. Which protocol should be enforced to encrypt all communication?

Refer to the exhibit. A security analyst captured the HTTP request and response shown. What type of vulnerability is present?

You are the lead security engineer for a financial technology company that hosts a critical web application on three load-balanced servers behind a reverse proxy. The application uses a REST API to process transactions. Recently, the company has experienced intermittent service outages during peak hours. Upon reviewing logs, you find that the reverse proxy is returning HTTP 503 errors for legitimate API requests, and the application servers show high CPU usage but normal memory. The network team reports no bandwidth issues. The application team claims no code changes were made. You suspect a specific type of attack is causing the outages. Which action should you take first to confirm the attack type?

Refer to the exhibit. A penetration tester executed the SQL injection payload and received the response shown. What is the most likely outcome of this attack?

You are a security analyst for a medium-sized e-commerce company. The company hosts its web application on a single server running Apache on Ubuntu. Recently, the operations team noticed that the server's CPU usage spikes to 100% every few minutes, causing the website to become unresponsive. They have ruled out hardware issues. The web server logs show repeated requests to the same URL with varying parameters, such as /product?id=1, /product?id=2, etc., all originating from a single IP address. Each request returns a 200 OK response, but the server takes several seconds to generate the page. The application uses a relational database backend with an ORM. You suspect an attack is occurring. What is the most likely attack and the best immediate course of action?

Match each encryption algorithm to its type.

Refer to the exhibit. A security analyst notices multiple ESTABLISHED connections on port 443 from different external IPs to the same process ID. What type of attack is most likely occurring?

Refer to the exhibit. An analyst runs an Nmap scan and finds these services. Which known vulnerability is most likely to be successfully exploited?

Refer to the exhibit. A penetration tester sends a SOAP request and receives multiple user records. Which vulnerability is present?

Refer to the exhibit. A penetration tester observes that the DNS server returns both internal (10.0.0.0/8) and external (203.0.113.5) IP addresses for the same domain. What is this technique called?