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GPEN · Question #143

In which of the following attacking methods does an attacker distribute incorrect IP address?

The correct answer is D. DNS poisoning. DNS poisoning is the attack where an attacker injects fraudulent DNS records to distribute incorrect IP address mappings to resolvers and clients.

Exploitation & Post-Exploitation Techniques

Question

In which of the following attacking methods does an attacker distribute incorrect IP address?

Options

  • AIP spoofing
  • BMac flooding
  • CMan-in-the-middle
  • DDNS poisoning

How the community answered

(45 responses)
  • A
    7% (3)
  • B
    2% (1)
  • C
    11% (5)
  • D
    80% (36)

Why each option

DNS poisoning is the attack where an attacker injects fraudulent DNS records to distribute incorrect IP address mappings to resolvers and clients.

AIP spoofing

IP spoofing involves forging the source IP address field in packet headers to impersonate another host, which is distinct from poisoning DNS records to redirect domain resolution.

BMac flooding

MAC flooding overwhelms a switch's CAM table with fake MAC addresses to degrade it to hub behavior, which is a Layer 2 attack unrelated to distributing incorrect IP addresses.

CMan-in-the-middle

Man-in-the-middle describes a broad class of interception attacks where the attacker relays communications between two parties; it does not specifically define the mechanism of distributing incorrect IP addresses through DNS.

DDNS poisoningCorrect

DNS cache poisoning works by inserting forged DNS response records into a recursive resolver's cache so that legitimate domain name queries return attacker-controlled IP addresses. This directly matches the description of distributing incorrect IP addresses - the victim's machine resolves a valid hostname to a malicious IP without detecting the tampering. The attack exploits the stateless, unauthenticated nature of traditional DNS.

Concept tested: DNS cache poisoning and forged IP address distribution

Source: https://www.cisa.gov/news-events/alerts/2008/07/08/multiple-dns-implementations-vulnerable-cache-poisoning

Topics

#DNS poisoning#IP spoofing#DNS cache#network attacks

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