require_relative '../spec_helper' require "webrick" require "stringio" require "net/http" describe "WEBrick" do describe "resists CVE-2017-17742" do it "for a response splitting headers" do config = WEBrick::Config::HTTP res = WEBrick::HTTPResponse.new config res['X-header'] = "malicious\r\nCookie: hack" io = StringIO.new res.send_response io io.rewind res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io)) res.code.should == '500' io.string.should_not =~ /hack/ end it "for a response splitting cookie headers" do user_input = "malicious\r\nCookie: hack" config = WEBrick::Config::HTTP res = WEBrick::HTTPResponse.new config res.cookies << WEBrick::Cookie.new('author', user_input) io = StringIO.new res.send_response io io.rewind res = Net::HTTPResponse.read_new(Net::BufferedIO.new(io)) res.code.should == '500' io.string.should_not =~ /hack/ end end end