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

[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?