TDM Digital Signage PC Player 4.1 – Insecure File Permissions

• Exploit Database
• 15 阅读

• 作者： LiquidWorm
  日期： 2020-10-27
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/48953/

• # Exploit Title: TDM Digital Signage PC Player 4.1 - Insecure File Permissions
  # Date: 2020-09-23
  # Exploit Author: LiquidWorm
  # Software Link: https://www.tdmsignage.com / https://pro.sony/en_NL/products/display-software/tdm-ds1y-tdm-ds3y
  # Version: 4.1.0.4
  
  Vendor: TDM [Trending Digital Marketing]
  Product web page: https://www.tdmsignage.com
  https://pro.sony/en_NL/products/display-software/tdm-ds1y-tdm-ds3y
  Affected version: 4.1.0.4
  
  Summary: With TDM you can do a lot more than just show Digital Signage.
  With our Enterprise-Grade software you open the door to Interactive Signage,
  Analytics, Proof of Play and a lot more.
  
  Desc: TDM Digital Signage Windows Player suffers from an elevation of
  privileges vulnerability which can be used by a simple authenticated
  user that can change the executable file with a binary of choice. The
  vulnerability exist due to the improper permissions, with the 'M' flag
  (Modify) or 'C' flag (Change) for 'Authenticated Users' group.
  
  Tested on: Microsoft Windows 10 Home
  
  
  Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
  @zeroscience
  
  
  Advisory ID: ZSL-2020-5604
  Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5604.php
  
  23.09.2020
  
  --
  
  
  C:\>icacls TDMSignage
  TDMSignage BUILTIN\Administrators:(I)(OI)(CI)(F)
   NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
   BUILTIN\Users:(I)(OI)(CI)(RX)
   NT AUTHORITY\Authenticated Users:(I)(M)<---------<<<
   NT AUTHORITY\Authenticated Users:(I)(OI)(CI)(IO)(M)<---------<<<
  
  Successfully processed 1 files; Failed processing 0 files
  
  C:\TDMSignage>dir /b *.exe
  Player.exe
  unins000.exe
  
  C:\TDMSignage>icacls Player.exe && icacls unins000.exe
  Player.exe BUILTIN\Administrators:(I)(F)
   NT AUTHORITY\SYSTEM:(I)(F)
   BUILTIN\Users:(I)(RX)
   NT AUTHORITY\Authenticated Users:(I)(M)<---------<<<
  
  Successfully processed 1 files; Failed processing 0 files
  unins000.exe BUILTIN\Administrators:(I)(F)
   NT AUTHORITY\SYSTEM:(I)(F)
   BUILTIN\Users:(I)(RX)
   NT AUTHORITY\Authenticated Users:(I)(M)<---------<<<
  
  Successfully processed 1 files; Failed processing 0 files