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SIGRed [1] (CVE-2020-1350) is a security vulnerability discovered in Microsoft's Domain Name System (DNS) implementation of Windows Server versions from 2003 to 2019.. To exploit the vulnerability, an unauthenticated attacker sends malicious requests to a Windows DNS server. [2]
DNS hijacking, DNS poisoning, or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. [1] This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards.
DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers .
Other standards (not DNSSEC) are used to secure bulk data (such as a DNS zone transfer) sent between DNS servers. As documented in RFC 4367, some users and developers make false assumptions about DNS names, such as assuming that a company's common name plus ".com" is always its domain name. DNSSEC cannot protect against false assumptions; it ...
In reality, there are no denial of service issues specific to zone maintenance traffic in any up-to-date DNS server (although older servers that have many other far more serious vulnerabilities do still exist) because functionally equivalent DOS and DDOS attacks can be performed with normal DNS queries without recourse to AXFR.
Usually referred to as ANY (e.g., in dig, Windows nslookup, and Wireshark). In 2019, RFC8482 [14] standards-track publication led many DNS providers, including Cloudflare, [15] to provide only minimal responses to "ANY" queries, instead of enumerating records. AXFR: 252 RFC 1035 [1] Authoritative Zone Transfer
DNS spoofing, also referred to as DNS cache poisoning, is a form of computer security hacking in which corrupt Domain Name System data is introduced into the DNS resolver's cache, causing the name server to return an incorrect result record, e.g. an IP address. This results in traffic being diverted to any computer that the attacker chooses.
walldns — a "reverse DNS wall", providing IP address-to-domain name lookup only. rbldns — a server designed for DNS blacklisting service. pickdns — a database-driven server that chooses from matching records depending on the requestor's location. (This feature is now a standard part of tinydns.) axfrdns — a zone transfer server.