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If DNS recursion is enabled, an attacker could spoof the origin on the UDP packet in order to make the DNS send the response to the victim server. An attacker could abuse ANY or DNSSEC record types as they use to have the bigger responses.
The Vulnerabilities in DNS Bypass Firewall Rules (UDP 53) is prone to false positive reports by most vulnerability assessment solutions. AVDS is alone in using behavior based testing that eliminates this issue.
Penetration testing scripts for assessing DNS server vulnerabilities. Documentation and guides on best practices for DNS security. Real-world case studies and examples from critical network environments.
8 maj 2018 · Decoding this string gave following output: 'name: eternalromance, protocol: dns (53/tcp)\n'. I figured that the only way to access the server was to perform a DNS attack. Creators of this challenge gave a hint that choosing TCP port over UDP for DNS may cause certain vulnerabilities.
Port 53 is used by DNS (Domain Name System). DNS takes care of recolving human readable 'host names' into numeric IP addresses. A commonly used DNS server called BIND has had a rich history of security problems.
3 paź 2024 · DNSSEC is designed to provide an additional layer of security, but vulnerabilities can still exist in misconfigured setups. You can exploit DNSSEC records for potential DDoS or data...
Please make sure that your recursive name server follows current practices and does not use source port 53 for queries. If using BIND, look for the query-source option in named.conf. If using Unbound, look for the outgoing-port-permit directive.
