Adobe Flash Player 22.0.0.192 - TAG Memory Corruption

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# Application: Adobe Flash Player

# Platforms: Windows,OSX

# Versions: 22.0.0.192 and earlier

# Author: Francis Provencher of COSIG

# Website: https://cosig.gouv.qc.ca/avis/

# Twitter: @COSIG_

# Date: 12 juillet 2016

# CVE-2016-4176

# COSIG-2016-20



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1) Introduction

2) Report Timeline

3) Technical details

4) POC



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1) Introduction

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Adobe Flash Player (labeled Shockwave Flash in Internet Explorer and Firefox) is a freeware software for using content created on the Adobe Flash platform, including viewing multimedia, executing rich Internet applications, and streaming video and audio. Flash Player can run from a web browser as a browser plug-in or on supported mobile devices.[7] Flash Player was created by Macromedia and has been developed and distributed by Adobe Systems since Adobe acquired Macromedia.



(https://en.wikipedia.org/wiki/Adobe_Flash_Player)



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2) Report Timeline

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2016-05-10: Francis Provencher du COSIG of COSIG report this vulnerability to Adobe PSIRT;

2016-05-17: Adobe PSIRT confirm this vulnerability;

2016-07-12: Adobe publish a patch (APSB16-25);

2016-07-12: Advisory released by COSIG;



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3) Technical details

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The vulnerability allows a remote attacker to execute malicious code or access to a part of the dynamically allocated memory using a user interaction

visiting a Web page or open a specially crafted SWF file, which contains ‘TAG’ invalid data.



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4) POC:

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https://cosig.gouv.qc.ca/wp-content/uploads/2016/07/COSIG-2016-20.zip

https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40105.zip



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