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Re: [jetty-users] POST params, DoS from hash collisions

The work to address CVE-2011-4461 was commit'd on Dec 29th, 2011

The recently released Jetty 7.6.0.RC3 contains this fix.

Joakim Erdfelt
joakim@xxxxxxxxxxx |
(the people behind jetty and cometd)

On Thu, Jan 5, 2012 at 3:34 PM, Justin Cummins <sul3n3t@xxxxxxxxx> wrote:
Last week, a widespread denial of service vulnerability was announced wherein the attacker can choose specific strings (or other objects) which all resolve to the same hashtable key. A POST request would be sufficient to trigger the denial of service.

Jetty is listed as one of the vulnerable web servers (among many others) and Oracle, I believe, has stated that they will not release any update. One mitigation is limiting a request size, however, the attack's effect is only reduced.

Is anyone working on a real fix for Jetty by placing request parameters into a different Map structure?

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