Adobe Flash - ATF Processing Overflow

Author: Google Security Research
type: dos
platform: multiple
port: 0
date_added: 2016-07-11
date_updated: 2016-07-11
verified: 1
codes: CVE-2016-4135
tags: 
aliases: 
screenshot_url: 
application_url: 

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=786

The attached ATF file causes a heap overflow in ATF processing. To reproduce this issue, put LoadImage.swf and test.png on a remote server, and visit http://127.0.0.1/LoadImage.swf?img=test.png.

To differentiate this from other ATF issues, this is an overflow in decompressing alphas when an image has a height of 1 pixel.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/40087.zip