Blog Post

Ghosts in the DNS machine

By Thomas Orthbandt

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Posted on February 14, 2012 in: Network

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There was an intriguingly named vulnerability revealed this week: Ghost Domains.  A paper describing it can be found here.  A team of researchers in China discovered a way to allow a domain to remain reachable in the DNS even after it has been revoked from a TLD.  It looks like they expended a lot of energy testing their new idea and discovered there are several caching DNS software releases that are vulnerable.