Dns Spoofing (CloudMonk.io)
DNS Spoofing
DNS spoofing, also known as DNS cache poisoning, is a malicious attack that exploits vulnerabilities in the Domain Name System (DNS). The primary goal of DNS spoofing is to redirect users from legitimate websites to fraudulent ones without their knowledge. This can lead to various security issues, including phishing attacks, data theft, and malware distribution.
In a typical DNS spoofing attack, the attacker sends forged DNS responses to a resolver, causing it to cache the incorrect information. As a result, when users attempt to visit a legitimate website, they are directed to an attacker's IP address instead. This manipulation can occur in various ways, such as intercepting DNS queries, exploiting weaknesses in the DNS protocol, or using social engineering tactics.
Key techniques used in DNS spoofing include:
- **Cache Poisoning**: The attacker sends fake DNS responses to the resolver, poisoning its cache with incorrect IP addresses.
- **Man-in-the-Middle Attacks**: The attacker intercepts DNS queries and provides false responses, leading users to malicious sites.
- **Domain Spoofing**: Registering a domain name that closely resembles a legitimate one to deceive users into entering sensitive information.
To mitigate DNS spoofing risks, various security measures can be implemented:
- **DNSSEC (Domain Name System Security Extensions)**: DNSSEC adds a layer of security by enabling the verification of DNS responses through cryptographic signatures.
- **Regularly Updating DNS Servers**: Keeping DNS server software up to date helps protect against known vulnerabilities.
- **Implementing Rate Limiting**: Limiting the number of DNS queries from a single source can help reduce the risk of cache poisoning.
For more detailed insights into DNS spoofing, including examples and mitigation strategies, you can refer to the following sources:
- https://www.imperva.com/learn/application-security/dns-spoofing/
- https://www.kaspersky.com/resource-center/threats/dns-spoofing
These resources provide comprehensive information on how DNS spoofing works and how to protect against it.