The remote host is vulnerable to a Denial of Service (DoS) attack.
The remote host is running Jetty, a Java web server that can be downloaded off the Internet and is currently bundled with some IBM applications. This version of Jetty is vulnerable to a remote Denial of Service (DoS) attack. An attacker exploiting this flaw would be able to render the web server unavailable.
Upgrade to version 4.2.19 or higher.