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[Research Paper] DNS Cache Snooping
From: Luis Grangeia <luis.grangeia () sidestep pt>
Date: Thu, 22 Apr 2004 17:29:31 +0100
Hi, I have written a research paper on a relatively ignored DNS issue known as DNS Cache Snooping. This issue allows one, for instance, to query a DNS cache to verify if a certain site has been accessed or if an email was recently sent to a given domain. Abstract and link below. Reader feedback and constructive criticism is welcome and appreciated. Available at http://community.sidestep.pt/~luis/DNS-Cache-Snooping/ ABSTRACT This research paper presents a technical overview of the technique known as DNS cache snooping. Firstly, a brief introduction to DNS is made followed by a discussion on common misconceptions regarding DNS sub-systems. Then this relatively unknown technique is introduced, followed by a field study to assert the overall exposure of the Internet to this threat. Also, a set of devised abuse scenarios that rely on cache snooping is presented. This paper concludes with recommendations on how to reduce exposure to this problem, including proposed changes to the BIND DNS server implementation. Regards, -- Luis Grangeia, GSNA http://community.sidestep.pt/~luis/ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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