Adobe Animate 15.2.1.95 – Memory Corruption

• Exploit Database
• 17 阅读

• 作者： hyp3rlinx
  日期： 2016-12-14
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/40915/

• [+] Credits: John Page aka hyp3rlinx
  
  [+] Website: hyp3rlinx.altervista.org
  
  [+] Source: http://hyp3rlinx.altervista.org/advisories/ADOBE-ANIMATE-MEMORY-CORRUPTION-VULNERABILITY.txt
  
  [+] ISR: ApparitionSec
  
  
  
  Vendor:
  =============
  www.adobe.com
  
  
  
  Product(s):
  =============================
  Adobe Animate
  15.2.1.95 and earlier versions
  
  Adobe Animate (formerly Adobe Flash Professional, Macromedia Flash, and
  FutureSplash Animator) is a multimedia authoring and computer
  animation program developed by Adobe Systems.
  
  
  
  Platforms:
  ===================
  Windows / Macintosh
  
  
  
  Vulnerability Type:
  =======================================
  Critical Memory Corruption Vulnerability
  
  
  
  CVE Reference:
  ==============
  CVE-2016-7866
  APSB16-38
  
  
  
  Vulnerability Details:
  =====================
  Adobe Animate suffers from a Buffer Overflow when creating .FLA files with
  ActionScript Classes that use overly long Class names.
  This causes memory corruption leading to possible arbitrary code execution
  upon opening a maliciously created .Fla Flash file.
  
  
  Reproduction / POC:
  
  
  1) Create FLA with overly long Class name in FLA Class publish properties
  input field.
  2) Save and close
  3) Reopen FLA, click edit to open the .as script file
  4) "ctrl + s" to save then boom.... access violation
  
  
  Distributed:
  Create new ".as" ActionScript 3 (AS3) file and give it very long class name
  in input field then hit "Ctrl+s" to save..
  you will crash IDE, next way described is ONE way how attackers can
  distribute malicious .FLA
  
  Abusing JSFL, The Flash JavaScript application programming interface
  (JavaScript API or JSAPI).
  
  1) Create following .JSFL file
  
  fl.getDocumentDOM().save();
  fl.getDocumentDOM().testMovie();
  
  2)Create a MovieClip stored in FLA library with a very long class name
  that extends MovieClip and export
   it for ActionScript etc...
  
  
  3) Drag the MovieClip to the stage
  
  
  4) Bundle FLA/JSFL file, make avail for download as example on how to use
  JSFL to call save() / publish() functions.
  
  
  User opens .FLA, runs harmless looking JSFL code then BOOM!
  
  
  
  Reference:
  https://helpx.adobe.com/security/products/animate/apsb16-38.html
  
  
  
  
  Disclosure Timeline:
  =====================================
  Vendor Notification: May 28, 2016
  December 13, 2016: Public Disclosure
  
  
  
  
  Exploitation Technique:
  =======================
  Local
  
  
  
  
  Severity Level:
  ================
  High
  
  
  
  [+] Disclaimer
  The information contained within this advisory is supplied "as-is" with no
  warranties or guarantees of fitness of use or otherwise.
  Permission is hereby granted for the redistribution of this advisory,
  provided that it is not altered except by reformatting it, and
  that due credit is given. Permission is explicitly given for insertion in
  vulnerability databases and similar, provided that due credit
  is given to the author. The author is not responsible for any misuse of the
  information contained herein and accepts no responsibility
  for any damage caused by the use or misuse of this information. The author
  prohibits any malicious use of security related information
  or exploits by the author or elsewhere.