The exploit, unveiled in research presented today, revives the DNS cache-poisoning attack that researcher Dan Kaminsky disclosed in 2008. He showed that, by masquerading as an authoritative DNS server and using it to flood a DNS resolver with fake lookup results for a trusted domain, an attacker could poison the resolver cache with the spoofed IP address. From then on, anyone relying on the same resolver would be diverted to the same imposter site. Ref https://arstechnica.com/gadgets/2021/11/dan-kaminskys-dns-cache-poisoning-attack-is-back-from-the-dead-again/?amp=1
