Dan Kaminsky, a security researcher, has discovered a fundamental flaw in the Domain Name System (DNS) protocol that could allow an attacker to massively disrupt the Internet, causing CERT to issue an alert and major DNS software vendors to issue patches. Lack of an applied patch in the ISP infrastructure would mean “they could go after your ISP or Google and re-direct them pretty much wherever they wanted.” Kaminsky hinted the problem centers around lack of sufficient port randomization related to the transaction ID of a query. Both current and older versions of DNS may be vulnerable. There’s a way to check for vulnerability to the DNS flaw by visiting here.
Major DNS Flaw Could Disrupt the Internet
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