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AUSCERT External Security Bulletin Redistribution
ESB-2016.2500
Adobe Security Bulletin APSB16-36
27 October 2016
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AusCERT Security Bulletin Summary
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Product: Adobe Flash Player
Publisher: Adobe
Operating System: Windows
Linux variants
OS X
Chrome OS
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-7855
Original Bulletin:
https://helpx.adobe.com/content/help/en/security/products/flash-player/apsb16-36.html
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Adobe Security Bulletin APSB16-36
Security updates available for Adobe Flash Player
Release date: October 26, 2016
Vulnerability identifier: APSB16-36
Priority: 1
CVE number: CVE-2016-7855
Platform: Windows, Macintosh, Linux and Chrome OS
Summary
Adobe has released security updates for Adobe Flash Player for Windows,
Macintosh, Linux and Chrome OS. These updates address a critical vulnerability
that could potentially allow an attacker to take control of the affected
system.
Adobe is aware of a report that an exploit for CVE-2016-7855 exists in the
wild, and is being used in limited, targeted attacks against users running
Windows versions 7, 8.1 and 10. Affected Versions Product Affected Versions
Platform Adobe Flash Player Desktop Runtime 23.0.0.185 and earlier Windows and
Macintosh Adobe Flash Player for Google Chrome 23.0.0.185 and earlier Windows,
Macintosh, Linux and Chrome OS Adobe Flash Player for Microsoft Edge and
Internet Explorer 11 23.0.0.185 and earlier Windows 10 and 8.1 Adobe Flash
Player for Linux 11.2.202.637 and earlier Linux
To verify the version of Adobe Flash Player installed on your system,
access the About Flash Player page, or right-click on content running in Flash
Player and select "About Adobe (or Macromedia) Flash Player" from the menu. If
you use multiple browsers, perform the check for each browser you have
installed on your system.
Solution
Adobe categorizes these updates with the following priority ratings and
recommends users update their installation to the newest version: Product
Updated Versions Platform Priority rating Availability Adobe Flash Player
Desktop Runtime 23.0.0.205 Windows and Macintosh 1
Flash Player Download Center
Flash Player Distribution Adobe Flash Player for Google Chrome 23.0.0.205
Windows, Macintosh, Linux and Chrome OS 1 Google Chrome Releases Adobe Flash
Player for Microsoft Edge and Internet Explorer 11 23.0.0.205 Windows 10 and
8.1 1 Microsoft Security Advisory Adobe Flash Player for Linux 11.2.202.643
Linux 3 Flash Player Download Center
Adobe recommends users of the Adobe Flash Player Desktop Runtime for
Windows and Macintosh update to 23.0.0.205 via the update mechanism within the
product [1], or by visiting the Adobe Flash Player Download Center. Adobe
recommends users of Adobe Flash Player for Linux update to Adobe Flash Player
11.2.202.643 by visiting the Adobe Flash Player Download Center. Adobe Flash
Player installed with Google Chrome will be automatically updated to the
latest Google Chrome version, which will include Adobe Flash Player 23.0.0.205
for Windows, Macintosh, Linux and Chrome OS. Adobe Flash Player installed with
Microsoft Edge and Internet Explorer 11 for Windows 10 and 8.1 will be
automatically updated to the latest version, which will include Adobe Flash
Player 23.0.0.205. Please visit the Flash Player Help page for assistance in
installing Flash Player.
[1] Users of Flash Player 11.2.x or later for Windows, or Flash Player 11.3.x
or later for Macintosh, who have selected the option to 'Allow Adobe to
install updates' will receive the update automatically. Users who do not have
the 'Allow Adobe to install updates' option enabled can install the update via
the update mechanism within the product when prompted. Vulnerability Details
These updates resolve a use-after-free vulnerability that could lead to code
execution (CVE-2016-7855).
Acknowledgments
Adobe would like to thank Neel Mehta and Billy Leonard from Google's Threat
Analysis Group for reporting CVE-2016-7855 and for working with Adobe to help
protect our customers.
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