312-50v13 Exam Dumps - Certified Ethical Hacker Exam (CEHv13)

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HTTP cookies may store authentication tokens, allowing users to remain logged in. If a browser retains cookies after closing, an attacker with access to the device could hijack active sessions.

Automatically deleting cookies upon termination reduces the window of opportunity for session hijacking.

Reference – CEH v13 Official Study Guide:

Module 11: Hacking Web Applications

Topic: Session Management

Quote:

“Session hijacking exploits persistent cookies or session IDs stored in browsers. Enforcing cookie deletion helps prevent this attack.”

Incorrect Options:

A. SQL databases are unrelated to browser cookies.

C. Browser cookies don’t store OS-level passwords.

D. This may be a secondary concern, but not the primary mitigation.

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Comprehensive and Detailed Explanation:

ARP Poisoning (Address Resolution Protocol Poisoning) is a classic Man-in-the-Middle (MiTM) attack in a LAN environment. It works by sending fake ARP replies to devices on a network to associate the attacker’s MAC address with the IP address of another host (typically the default gateway). As a result:

Network traffic meant for the gateway is sent to the attacker instead.

The attacker can then intercept, modify, or forward the traffic to the actual destination, performing a full MiTM.

This allows the attacker to:

Sniff sensitive data (e.g., credentials, emails)

Hijack sessions

Inject malicious payloads

From CEH v13 Courseware:

Module 8: Sniffing

Topic: MiTM Attacks → ARP Spoofing Techniques

Incorrect Options:

A. Password Sniffing is a result of MiTM but not a technique itself.

C. MAC Flooding is a switch attack that floods the CAM table to make the switch act like a hub.

D. DHCP Sniffing relates to capturing DHCP messages but is not commonly used for MiTM.

Tess King is attempting to gather all DNS records from a target zone. This process is referred to as a zone transfer (AXFR), which is typically performed by secondary name servers to synchronize DNS data with the primary. If improperly secured, attackers can initiate unauthorized zone transfers to enumerate valuable information such as:

Hostnames

IP addresses

Mail servers

Name servers

CEH v13 defines a zone transfer as a crucial step in DNS enumeration.

From CEH v13 Official Courseware:

Module 3: Scanning Networks

Topic: DNS Enumeration → Zone Transfers

CEH v13 Study Guide states:

“A zone transfer (AXFR) is a DNS transaction used to replicate DNS databases. Attackers can exploit this feature to extract all DNS information from an improperly secured server.”

Incorrect Options:

A. Zone harvesting is not a formal term.

C. Zone update refers to DNS dynamic update operations (e.g., DDNS).

D. Zone estimate is not a DNS-related process.

Union-based SQL injection is a technique that uses the UNION SQL operator to combine the results of the original query with the results of one or more additional queries. This allows attackers to:

Retrieve data from different database tables

Extend the result set returned to the web application

Exploit the application if both queries return the same number and type of columns

According to CEH v13:

UNION SELECT can be used to enumerate tables, extract user credentials, or display sensitive data.

It requires knowledge of the structure of the original query.

Incorrect Options:

A. Error-based injection extracts data from database error messages.

B. Boolean-based blind SQLi returns true/false results to infer data.

C. Blind SQLi (generic) relies on no visible output and uses inference techniques.

Reference – CEH v13 Official Courseware:

Module 14: Hacking Web Applications

Section: “Types of SQL Injection Attacks”

Subsection: “Union-Based SQL Injection”

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LAN Manager (LM) hashes are legacy password hashing methods used in older Windows systems (including Windows 2000 for backward compatibility). LM hashing works by:

Converting the password to uppercase.

Padding or truncating it to 14 characters.

Splitting it into two 7-character halves.

Using each half as a DES key to encrypt a known constant ("KGS!@#$%").

Therefore, LM hashing uses the DES (Data Encryption Standard) algorithm.

From CEH v13 Official Courseware:

Module 6: Malware Threats → Password Storage and LM Hash Structure

Zigbee could be a wireless technology developed as associate open international normal to deal with the unique desires of affordable, low-power wireless IoT networks. The Zigbee normal operates on the IEEE 802.15.4 physical radio specification and operates in unauthorised bands as well as a pair of.4 GHz, 900 MHz and 868 MHz.

The 802.15.4 specification upon that the Zigbee stack operates gained confirmation by the Institute of Electrical and physical science Engineers (IEEE) in 2003. The specification could be a packet-based radio protocol supposed for affordable, battery-operated devices. The protocol permits devices to speak in an exceedingly kind of network topologies and may have battery life lasting many years.

The Zigbee three.0 Protocol

The Zigbee protocol has been created and ratified by member corporations of the Zigbee Alliance.Over three hundred leading semiconductor makers, technology corporations, OEMs and repair corporations comprise the Zigbee Alliance membership. The Zigbee protocol was designed to supply associate easy-to-use wireless information answer characterised by secure, reliable wireless network architectures.

THE ZIGBEE ADVANTAGE

The Zigbee 3.0 protocol is intended to speak information through rip-roaring RF environments that area unit common in business and industrial applications. Version 3.0 builds on the prevailing Zigbee normal however unifies the market-specific application profiles to permit all devices to be wirelessly connected within the same network, no matter their market designation and performance. what is more, a Zigbee 3.0 certification theme ensures the ability of product from completely different makers. Connecting Zigbee three.0 networks to the information science domain unveil observance and management from devices like smartphones and tablets on a local area network or WAN, as well as the web, and brings verity net of Things to fruition.

Zigbee protocol options include:

Support for multiple network topologies like point-to-point, point-to-multipoint and mesh networks

Low duty cycle – provides long battery life

Low latency

Direct Sequence unfold Spectrum (DSSS)

Up to 65,000 nodes per network

128-bit AES encryption for secure information connections

Collision avoidance, retries and acknowledgements

This is another short-range communication protocol based on the IEEE 203.15.4 standard. Zig-Bee is used in devices that transfer data infrequently at a low rate in a restricted area and within a range of 10–100 m.

A demilitarized zone (DMZ) is a buffer zone between a trusted internal network and an untrusted external network (usually the internet). Public-facing services like web servers, email servers, and DNS servers are typically placed in the DMZ. These nodes can be accessed from the internet, but the DMZ design ensures that unauthorized access to the internal network is blocked or highly restricted.

The purpose is to provide access to certain systems without exposing the internal network directly.