Adobe Flash Player and AIR Critical Security Update

Adobe is aware of a report that an exploit for CVE-2015-8651 is being used in limited, targeted attacks and has released an out-of-band critical security update for all versions. It is recommended that this update be installed as soon as possible.

Adobe has released Version 20.0.0.267 for Microsoft Windows and Macintosh.  The Extended Release Version was incremented to Version 18.0.0.324 with this update.

For those who use Adobe AIR, it has been updated to version 20.0.0.233.  The update is available here: https://get.adobe.com/air/

Release date: December 28, 2015
Vulnerability identifier: APSB16-01
CVE number: CVE-2015-8459, CVE-2015-8460, CVE-2015-8634, CVE-2015-8635, CVE-2015-8636, CVE-2015-8638, CVE-2015-8639, CVE-2015-8640, CVE-2015-8641, CVE-2015-8642, CVE-2015-8643, CVE-2015-8644, CVE-2015-8645, CVE-2015-8646, CVE-2015-8647, CVE-2015-8648, CVE-2015-8649, CVE-2015-8650, CVE-2015-8651
Platform: All Platforms

• Users of the Adobe Flash Player desktop runtime for Windows and Macintosh should update to Adobe Flash Player 20.0.0.267.
• Users of the Adobe Flash Player Extended Support Release should update to Adobe Flash Player 18.0.0.324.
• Users of Adobe Flash Player for Linux should update to Adobe Flash Player 11.2.202.559.
• Adobe Flash Player installed with Google Chrome, as well as Internet Explorer on Windows 8.x and Windows 10, will automatically update to the current version.

Flash Player Update Instructions

It is recommended that you either use the auto-update mechanism within the product when prompted or the direct download links.  The problem with the auto-update mechanism is that it can take a few days to finally provide the update and up to a week if using the "Notify me to install updates" setting.

Flash Player Auto-Update

The update settings for Flash Player versions 10.3 and above can found in the Advanced tab of the Flash Player Settings Manager.  The locations are as follows:

• Windows: click Start > Settings > Control Panel > Flash Player
• Macintosh: System Preferences (under Other) click Flash Player
• Linux Gnome: System > Preferences > Adobe Flash Player
• Linux KDE: System Settings > Adobe Flash Player

Also note that the Flash Player Settings Manager is where to manage local settings.

Flash Player Direct Download Links

Warning:  Although Adobe suggests downloading the update from the Adobe Flash Player Download Center, that link includes a pre-checked option to install unnecessary extras, such as McAfee Scan Plus or Google Drive.  If you use the download center, uncheck any unnecessary extras.

• Non-IE Plugin (Opera, Firefox, Etc.):  http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_20_plugin.exe
   
• Flash Player For Internet Explorer, Windows 7 and earlier:  http://download.macromedia.com/get/flashplayer/current/licensing/win/install_flash_player_20_active_x.exe
  
  Internet Explorer, Windows 8 and above: Microsoft updated Security Advisory 2755801.  If you do not have Automatic Updates enabled, the Flash Player update can be downloaded from Microsoft Security Advisory: Update for Vulnerabilities in Adobe Flash Player in Internet Explorer 10: July 9, 2013.
  
  
• Flash Player Uninstaller:  http://download.macromedia.com/get/flashplayer/current/support/uninstall_flash_player.exe
• Adobe AIR:  http://get.adobe.com/air/

Notes:

• If you use the Adobe Flash Player Download Center, be careful to uncheck any optional downloads that you do not want.  Any pre-checked option is not needed for the Flash Player update.
• Uncheck any toolbar offered with Adobe products if not wanted.
• If you use alternate browsers, it is necessary to install the update for both Internet Explorer as well as the update for alternate browsers.
• The separate 32-bit and 64-bit uninstallers have been replaced with a single uninstaller.

Verify Installation

To verify the Adobe Flash Player version number installed on your computer, go to the About Flash Player page, or right-click on content running in Flash Player and select "About Adobe Flash Player" from the menu. 

Do this for each browser installed on your computer.

To verify the version of Adobe Flash Player for Android, go to Settings > Applications > Manage Applications > Adobe Flash Player x.x.

References

• Adobe Priority Ratings
• AIR Download Center 
• Security Bulletin: Security Bulletin
• Release Notes:  Flash Player® 20 AIR® 20
• PSIRT

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