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                              CERT-Renater

                 Note d'Information No. 2017/VULN396
_____________________________________________________________________

DATE                : 13/12/2017

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Adobe Flash Player versions prior
                                    to 28.0.0.126.

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https://helpx.adobe.com/security/products/flash-player/apsb17-42.html
_____________________________________________________________________

Security updates available for Flash Player | APSB17-42
+-----------------------------------------------------------------------------+
|Bulletin ID            |Date Published               |Priority         |
|-----------------------+-----------------------------------+-----------------|
|APSB17-42              |December 12, 2017            |2                |
+-----------------------------------------------------------------------------+

Summary

Adobe has released a security update for Adobe Flash Player for Windows,
Macintosh, Linux and Chrome OS. This update addresses a regression that
could lead to the unintended reset of the global settings preference
file.

Affected Product Versions

+-----------------------------------------------------------------------------+
|Product                            |Version         |Platform         |
|-----------------------------------+-----------------+-----------------------|
|Adobe Flash Player Desktop Runtime |27.0.0.187 and  |Windows,
                                                           Macintosh |
|                                   |earlier versions |
      |
|-----------------------------------+-----------------+-----------------------|
|Adobe Flash Player for Google      |27.0.0.187 and   |Windows,
                                                            Macintosh
|
|Chrome                             |earlier versions |Linux and Chrome
                                                                   OS  |
|-----------------------------------+-----------------+-----------------------|
|Adobe Flash Player for Microsoft   |27.0.0.187 and   |Windows 10 and
                                                               8.1     |
|Edge and Internet Explorer 11      |earlier versions |
      |
|-----------------------------------+-----------------+-----------------------|
|Adobe Flash Player Desktop Runtime |27.0.0.187 and   | Linux          |
|                                   |earlier versions |
      |
+-----------------------------------------------------------------------------+

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 latest version:

+-----------------------------------------------------------------------------+
|Product             |Version   |Platform     |Priority|Availability
      |
|--------------------+----------+-------------+--------+----------------------|
|                    |          |             |        |Flash Player
                                                              Download |
|Adobe Flash Player  |          |Windows,     |        |Center
      |
|Desktop Runtime     |28.0.0.126|Macintosh    |2       |
      |
|                    |          |             |        |Flash Player
      |
|                    |          |             |        |Distribution
      |
|--------------------+----------+-------------+--------+----------------------|
|                    |          |Windows,     |        |
      |
|Adobe Flash Player  |28.0.0.126|Macintosh,   |2       |Google Chrome
                                                               Releases|
|for Google Chrome   |          |Linux and    |        |
      |
|                    |          |Chrome OS    |        |
      |
|--------------------+----------+-------------+--------+----------------------|
|Adobe Flash Player  |          |             |        |
      |
|for Microsoft Edge  |28.0.0.126|Windows 10   |2       |Microsoft
                                                         Security    |
|and Internet        |          |and 8.1      |        |Advisory
      |
|Explorer 11         |          |             |        |
      |
|--------------------+----------+-------------+--------+----------------------|
|Adobe Flash Player  |28.0.0.126|Linux        |3       |Flash Player
                                                        Download |
|Desktop Runtime     |          |             |        |Center
      |
+-----------------------------------------------------------------------------+

Note:

  * Adobe recommends users of the Adobe Flash Player Desktop Runtime
    for Windows, Macintosh and Linux update to Adobe Flash Player
    28.0.0.126 via the update mechanism within the product [1] or 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 28.0.0.126 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
    28.0.0.126.
  * Please visit the Flash Player Help page for assistance in
    installing Flash Player.

[1] Users 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

+-----------------------------------------------------------------------------+
|Vulnerability   |Vulnerability Impact     |Severity|CVE Number    |
|Category        |                                    |        |
      |
|----------------+------------------------------------+--------+--------------|
|Business Logic  |Unintended reset of global settings |Moderate
                                                         |CVE2017-11305|
|Error           |preference file                     |    |              |
+-----------------------------------------------------------------------------+

==========================================================
+ CERT-RENATER          | tel : 01-53-94-20-44           +
+ 23 - 25 Rue Daviel    | fax : 01-53-94-20-41           +
+ 75013 Paris           | email: cert@support.renater.fr +
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