Describe three vulnerabilities of DNS and what is required to reduce or eliminate these vulnerabilities?

DNS vulnerability is the attack in the DNS server by the cracker or hacker from the middle of servers and the user, which renders the DNS service unavailable (Timothy Rooney, 2011). The vulnerabilities normally redirect users to unwanted or malicious domain to install unsecured wares on the systems of the users (John R. Vacca, 2007).

            One  of the DNS vulnerability which is recorded in US-CERT is VU#520721, which describes Oracle outside In contains exploitable vulnerabilities in lotus 123 and Microsoft CAB file parsers, which can permit unauthenticated attacker or hacker to accomplish arbitrary code on a vulnerable system. Depending on what application is using outside in, the correspondence result my happen as the result of some user interaction, such as single clicking on a file, or it can happen with no interaction. Click here for more...........