ruby -- cgi.rb library Denial of Service

Official ruby site reports:

A vulnerability has been discovered in the CGI library (cgi.rb)
that ships with Ruby which could be used by a malicious user to
create a denial of service attack (DoS). The problem is triggered
by sending the library an HTTP request that uses multipart MIME
encoding and as an invalid boundary specifier that begins with
“-” instead of “–”. Once triggered it will
exhaust all available memory resources effectively creating a DoS
condition.