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Re: [jetty-users] POST params, DoS from hash collisions
- From: Joakim Erdfelt <joakim@xxxxxxxxxxx>
- Date: Thu, 5 Jan 2012 16:12:10 -0700
- Delivered-to: firstname.lastname@example.org
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.
(the people behind jetty and cometd)
On Thu, Jan 5, 2012 at 3:34 PM, Justin Cummins <sul3n3t@xxxxxxxxx>
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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