VALID 312-50V13 EXAM VOUCHER | 312-50V13 PRACTICE ENGINE

Valid 312-50v13 Exam Voucher | 312-50v13 Practice Engine

Valid 312-50v13 Exam Voucher | 312-50v13 Practice Engine

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ECCouncil Certified Ethical Hacker Exam (CEHv13) Sample Questions (Q206-Q211):

NEW QUESTION # 206
One of your team members has asked you to analyze the following SOA record. What is the version?
Rutgers.edu. SOA NS1.Rutgers.edu ipad.college.edu (200302028 3600 3600 604800 2400.) (Choose four.)

  • A. 0
  • B. 1
  • C. 2
  • D. 3
  • E. 4
  • F. 5

Answer: A,C,E,F

Explanation:
The SOA (Start of Authority) record is a DNS record that defines the authoritative information about a domain. Its format includes the following fields:
(domain) IN SOA (Primary Name Server) (Responsible Email)
(Serial) (Refresh) (Retry) (Expire) (Minimum TTL)
Given:
Rutgers.edu. SOA NS1.Rutgers.edu ipad.college.edu (200302028 3600 3600 604800 2400.) Field values:
* Serial: 200302028 (# This is the version number of the zone file.)
* Refresh: 3600 seconds
* Retry: 3600 seconds
* Expire: 604800 seconds
* Minimum TTL: 2400 seconds
These values represent key configurations and are all part of the SOA record's operational data.
* A: 200302028 = Serial/version (correct)
* B: 3600 = Refresh (correct)
* C: 604800 = Expire (correct)
* D: 2400 = Minimum TTL (correct)
Incorrect Options:
* E and F (60, 4800): Not part of the SOA record shown.
Reference:CEH v13 Study Guide - Module 3: DNS Enumeration # SOA Record FormatRFC 1035 - Section
3.3.13: Start of Authority Record


NEW QUESTION # 207
A penetration tester is conducting an assessment of a web application for a financial institution. The application uses form-based authentication and does not implement account lockout policies after multiple failed login attempts. Interestingly, the application displays detailed error messages that disclose whether the username or password entered is incorrect. The tester also notices that the application uses HTTP headers to prevent clickjacking attacks but does not implement Content Security Policy (CSP). With these observations, which of the following attack methods would likely be the most effective for the penetration tester to exploit these vulnerabilities and attempt unauthorized access?

  • A. The tester could execute a Man-in-the-Middle (MitM) attack to intercept and modify the HTTP headers for a Clickjacking attack
  • B. The tester could execute a Brute Force attack, leveraging the lack of account lockout policy and the verbose error messages to guess the correct credentials
  • C. The tester could launch a Cross-Site Scripting (XSS) attack to steal authenticated session cookies, potentially bypassing the clickjacking protection
  • D. The tester could exploit a potential SQL Injection vulnerability to manipulate the application's database

Answer: B

Explanation:
The most effective attack method for the penetration tester to exploit these vulnerabilities and attempt unauthorized access would be to execute a Brute Force attack, leveraging the lack of account lockout policy and the verbose error messages to guess the correct credentials. A Brute Force attack is a hacking method that uses trial and error to crack passwords, login credentials, or encryption keys. It is a simple yet reliable tactic for gaining unauthorized access to individual accounts and organizations' systems and networks1. In this scenario, the tester can take advantage of the fact that the application does not lock out users after multiple failed login attempts, which means the tester can try as many combinations as possible without being blocked.
The tester can also use the detailed error messages that disclose whether the username or password entered is incorrect, which can help narrow down the search space and reduce the number of guesses needed. For example, if the tester enters a wrong username and a wrong password, and the application responds with
"Invalid username", the tester can eliminate that username from the list of candidates and focus on finding the correct one. Similarly, if the tester enters a correct username and a wrong password, and the application responds with "Invalid password", the tester can confirm that username and focus on finding the correct password. By using automated tools or scripts, the tester can perform a Brute Force attack faster and more efficiently.
The other options are not as effective or feasible as option A for the following reasons:
* B. The tester could exploit a potential SQL Injection vulnerability to manipulate the application's database: This option is not feasible because there is no indication that the application is vulnerable to SQL Injection, which is a web security vulnerability that allows an attacker to interfere with the queries that an application makes to its database2. The application uses form-based authentication, which does not necessarily involve SQL queries, and the error messages do not reveal any SQL syntax or structure.
Moreover, even if the application was vulnerable to SQL Injection, the tester would need to craft a malicious SQL query that can bypass the authentication mechanism and grant access to the application, which may not be possible or easy depending on the database design and configuration.
* C. The tester could launch a Cross-Site Scripting (XSS) attack to steal authenticated session cookies, potentially bypassing the clickjacking protection: This option is not effective because there is no evidence that the application is vulnerable to XSS, which is a web security vulnerability that allows an attacker to compromise the interactions that users have with a vulnerable application by injecting malicious scripts3. The application uses HTTP headers to prevent clickjacking attacks, which are a type of attack that tricks a user into clicking on a hidden or disguised element on a web page4. However, this does not imply that the application is vulnerable to XSS, which requires a different type of injection point and payload. Moreover, even if the application was vulnerable to XSS, the tester would need to find a way to deliver the malicious script to a legitimate user who is already authenticated, and then capture the stolen session cookies from the user's browser, which may not be feasible or easy depending on the application's design and security measures.
* D. The tester could execute a Man-in-the-Middle (MitM) attack to intercept and modify the HTTP headers for a Clickjacking attack: This option is not feasible because a MitM attack is a type of attack that requires the attacker to insert themselves between two parties who believe that they are directly communicating with each other, and then relay or alter the communications between them5. In this scenario, the tester would need to intercept the HTTP traffic between the user and the application, and then modify the HTTP headers to remove or weaken the clickjacking protection. However, this would require the tester to have access to the network infrastructure or the user's device, which may not be possible or easy depending on the network security and encryption. Moreover, even if the tester could perform a MitM attack, the tester would still need to trick the user into clicking on a malicious element on a web page, which may not be possible or easy depending on the user's awareness and behavior.
References:
* 1: What is a Brute Force Attack? | Definition, Types & How It Works - Fortinet
* 2: What is SQL Injection? Tutorial & Examples | Web Security Academy
* 3: Cross Site Scripting (XSS) | OWASP Foundation
* 4: What is Clickjacking? | Definition, Types & Examples - Fortinet
* 5: Man-in-the-middle attack - Wikipedia


NEW QUESTION # 208
An attacker identified that a user and an access point are both compatible with WPA2 and WPA3 encryption.
The attacker installed a rogue access point with only WPA2 compatibility in the vicinity and forced the victim to go through the WPA2 four-way handshake to get connected. After the connection was established, the attacker used automated tools to crack WPA2-encrypted messages. What is the attack performed in the above scenario?

  • A. Side-channel attack
  • B. Timing-based attack
  • C. Cache-based attack
  • D. Downgrade security attack

Answer: D

Explanation:
The described attack is a Downgrade Security Attack. In this scenario:
* The legitimate client and access point support both WPA2 and WPA3.
* The attacker introduces a rogue AP that only supports WPA2.
* The victim connects to this rogue AP using WPA2 (less secure) instead of WPA3.
* Once downgraded, the attacker captures the handshake and attempts to crack the WPA2 encryption.
This is known as a "Downgrade Attack" or "Downgrade Negotiation Attack," which exploits backward compatibility in security protocols.
Incorrect Options:
* A. Timing-based attacks usually refer to side-channel analysis, not protocol downgrading.
* B. Side-channel attacks extract info via timing, power usage, etc., not protocol negotiation.
* D. Cache-based attacks exploit memory caching behavior.
Reference - CEH v13 Official Courseware:
Module 16: Hacking Wireless Networks
Section: "Wireless Encryption Attacks"
Subsection: "Downgrade Attacks (WPA3 to WPA2) and Rogue Access Points"


NEW QUESTION # 209
Which file is a rich target to discover the structure of a website during web-server footprinting?

  • A. index.html
  • B. Robots.txt
  • C. domain.txt
  • D. Document root

Answer: B

Explanation:
Information Gathering from Robots.txt File A website owner creates a robots.txt file to list the files or directories a web crawler should index for providing search results. Poorly written robots.txt files can cause the complete indexing of website files and directories. If confidential files and directories are indexed, an attacker may easily obtain information such as passwords, email addresses, hidden links, and membership areas. If the owner of the target website writes the robots.txt file without allowing the indexing of restricted pages for providing search results, an attacker can still view the robots.txt file of the site to discover restricted files and then view them to gather information. An attacker types URL/robots.txt in the address bar of a browser to view the target website's robots.txt file. An attacker can also download the robots.txt file of a target website using the Wget tool. Certified Ethical Hacker(CEH) Version 11 pg 1650


NEW QUESTION # 210
Which mode of IPSec should you use to assure security and confidentiality of data within the same LAN?

  • A. AH permiscuous
  • B. ESP confidential
  • C. AH Tunnel mode
  • D. ESP transport mode

Answer: D


NEW QUESTION # 211
......

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