|Apache Tomcat before 6.0.39, 7.x before 7.0.47, and 8.x before
8.0.0-RC3, when an HTTP connector or AJP connector is used, does not
properly handle certain inconsistent HTTP request headers, which
allows remote attackers to trigger incorrect identification of a
request's length and conduct request-smuggling attacks via (1)
multiple Content-Length headers or (2) a Content-Length header and a
"Transfer-Encoding: chunked" header. NOTE: this vulnerability exists
because of an incomplete fix for CVE-2005-2090.