Identifying Ping of Death via Oversized Packets

312-50v12 By islever Editorial Last updated

Denial-of-Service

Short answer

D The Ping of Death attack is identified by sending fragmented IP packets that exceed the maximum allowable size, causing buffer overflows and system instability upon reassembly.

Question

A large enterprise has been experiencing sporadic system crashes and instability, resulting in limited access to its web services. The security team suspects it could be a result of a Denial of Service (DoS) attack. A significant increase in traffic was noticed in the network logs, with patterns suggesting packet sizes exceeding the prescribed size limit. Which among the following DoS attack techniques best describes this scenario?
  1. Smurf attack
  2. UDP flood attack
  3. Pulse wave attack
  4. Ping of Death attack Correct Answer

Key Takeaways

The key to this question is recognizing that 'packet sizes exceeding the prescribed size limit' refers specifically to malformed or oversized fragments used in a Ping of Death attack, rather than just high volume traffic.

This question tests the identification of Denial of Service techniques based on specific traffic anomalies. The correct answer is D because the scenario describes packet sizes exceeding prescribed limits, which is the defining characteristic of a Ping of Death attack.

Common mistake: Candidates often confuse DoS types by focusing on the result (system crash) rather than the mechanism. They might choose Smurf or UDP Flood due to the mention of 'increase in traffic', missing the critical detail about packet size violations.

Expert Analysis

Why the Answer Is Correct

The Ping of Death attack exploits the TCP/IP specification by sending fragmented IP packets that are larger than the maximum allowed size of 65,535 bytes. When the target system reassembles these malformed packets, it causes buffer overflows, leading to system crashes or instability. The prompt explicitly mentions "packet sizes exceeding the prescribed size limit," which is the technical signature of this attack.

Why the Other Options Are Wrong

A Smurf attack (A) relies on amplification using ICMP echo requests sent to broadcast addresses, not oversized packets. A UDP flood (B) involves overwhelming a target with a high volume of UDP traffic, focusing on bandwidth exhaustion rather than packet structure. A Pulse wave attack (C) involves alternating between periods of high and low traffic rates to evade detection thresholds, unrelated to packet size limits.

Community Comment Notes

Community consensus strongly supports option D. Users noted that the phrase "packet sizes exceeding the prescribed size limit" is the definitive clue for Ping of Death. One user highlighted that while Smurf attacks increase traffic, they do so via spoofing, whereas Ping of Death targets the fragmentation reassembly process. As one commenter stated, "It has to be Ping of death since it mentions... packet sizes exceeding the prescribed size limit."

Exam Strategy

When analyzing DoS scenarios, distinguish between volumetric attacks (like floods) and protocol exploitation attacks (like Ping of Death). Always look for keywords related to packet structure, such as 'fragmented,' 'oversized,' 'malformed,' or 'reassembly issues,' which point to vulnerabilities in the IP layer rather than simple bandwidth saturation.

Frequently Asked Questions

How does Ping of Death differ from a standard ICMP flood?

Standard ICMP floods rely on volume to saturate bandwidth, while Ping of Death relies on sending oversized, fragmented packets that crash the target's network stack during reassembly.

Why is the Smurf attack not the correct answer here?

Smurf attacks use IP broadcast addressing to amplify traffic volume, not oversized packets. The key indicator here is the violation of packet size limits, not traffic amplification.

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Community Votes

D
100%

100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 5 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 5

  1. smoce 👍 4 Answered D
    A Ping of Death (PoD) attack is a form of DDoS attack in which an attacker sends the recipient device simple ping requests as fragmented IP packets that are oversized or malformed.
  2. insaniunt 👍 4 Answered D
    D - Ping of Death Module 10 Page 1441 from CEH v12 book
  3. medithaperera 👍 2
    It has to be Ping of death since it mentions "with patterns suggesting packet sizes exceeding the prescribed size limit". if it is just a DOS attack it is surely an UDP flood attack
  4. remrey 👍 1
    Answer: D Smurf attacks involve amplifying network traffic to overwhelm a target, using spoofed broadcast ping messages, while Ping of Death attacks focus on exploiting packet size vulnerabilities to cause system failures.
  5. [Removed] 👍 1
    Could someone please validate this information

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