A long URL proxy request lead to java.nio.BufferOverflowException in Undertow.
References
https://nvd.nist.gov/vuln/detail/CVE-2016-7046
https://bugzilla.redhat.com/show_bug.cgi?id=1376646
https://github.com/undertow-io/undertow/commit/c518b5a1784061d…