Is nginx vulnerable to the Hash Table Vulnerability (n.runs AG)?

[Justin Hart]

http://www.securityweek.com/hash-table-collision-attacks-could-trigger-ddos-massive-scale

Without going through the way nginx parses an incoming request, I'm unsure
if nginx isn't vulnerable to this, because of the availability to grab the
value of a GET parameter via
http://wiki.nginx.org/HttpCoreModule#.24arg_PARAMETER.  My hope is that
especially if an $arg_PARAMETER isn't used in the config, it is not
vulnerable because it wouldn't even attempt to parse the parameters, but I
can't be sure.

Can anyone speak to this?
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