SUSE-SU-2021:14821-1: important: Security update for MozillaFirefox

sle-security-updates at sle-security-updates at
Fri Oct 1 16:16:27 UTC 2021

   SUSE Security Update: Security update for MozillaFirefox

Announcement ID:    SUSE-SU-2021:14821-1
Rating:             important
References:         #1188891 #1189547 #1190269 #1190274 
Cross-References:   CVE-2021-29980 CVE-2021-29981 CVE-2021-29982
                    CVE-2021-29983 CVE-2021-29984 CVE-2021-29985
                    CVE-2021-29986 CVE-2021-29987 CVE-2021-29988
                    CVE-2021-29989 CVE-2021-29990 CVE-2021-29991
                    CVE-2021-38492 CVE-2021-38495
CVSS scores:
                    CVE-2021-29980 (SUSE): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2021-29984 (SUSE): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2021-29985 (SUSE): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
                    CVE-2021-29986 (SUSE): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2021-29988 (SUSE): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2021-29989 (SUSE): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
                    CVE-2021-29991 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
                    CVE-2021-38492 (SUSE): 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Products:
                    SUSE Linux Enterprise Server 11-SP4-LTSS
                    SUSE Linux Enterprise Debuginfo 11-SP4

   An update that fixes 14 vulnerabilities is now available.


   This update for MozillaFirefox fixes the following issues:

   This update contains the Firefox Extended Support Release 91.1.0 ESR.

   * Fixed: Various stability, functionality, and security fixes

   MFSA 2021-40 (bsc#1190269, bsc#1190274):

   * CVE-2021-38492: Navigating to `mk:` URL scheme could load Internet
   * CVE-2021-38495: Memory safety bugs fixed in Firefox 92 and Firefox ESR

   Firefox 91.0.1esr ESR

   * Fixed: Fixed an issue causing buttons on the tab bar to be resized when
     loading certain websites (bug 1704404)
   * Fixed: Fixed an issue which caused tabs from private windows to be
     visible in non-private windows when viewing switch-to- tab results in
     the address bar panel (bug 1720369)
   * Fixed: Various stability fixes
   * Fixed: Security fix MFSA 2021-37 (bsc#1189547)
   * CVE-2021-29991 (bmo#1724896) Header Splitting possible with HTTP/3

   Firefox Extended Support Release 91.0 ESR

   * New: Some of the highlights of the new Extended Support Release are:

     - A number of user interface changes. For more information, see the
       Firefox 89 release notes.
     - Firefox now supports logging into Microsoft, work, and school accounts
       using Windows single sign-on. Learn more
     - On Windows, updates can now be applied in the background while Firefox
       is not running.
     - Firefox for Windows now offers a new page about:third-party to help
       identify compatibility issues caused by third-party applications
     - Version 2 of Firefox's SmartBlock feature further improves private
       browsing. Third party Facebook scripts are blocked to prevent you from
       being tracked, but are now automatically loaded "just in time" if you
       decide to "Log in with Facebook"
       on any website.
     - Enhanced the privacy of the Firefox Browser's Private Browsing mode
       with Total Cookie Protection, which confines cookies to the site where
       they were created, preventing companis from using cookies to track
       your browsing across sites. This feature was originally launched in
       Firefox's ETP Strict mode.
     - PDF forms now support JavaScript embedded in PDF files. Some PDF forms
       use JavaScript for validation and other interactive features.
     - You'll encounter less website breakage in Private Browsing and Strict
       Enhanced Tracking Protection with SmartBlock, which provides stand-in
       scripts so that websites load properly.
     - Improved Print functionality with a cleaner design and better
       integration with your computer's printer settings.
     - Firefox now protects you from supercookies, a type of tracker that can
       stay hidden in your browser and track you
       online, even after you clear cookies. By isolating supercookies,
        Firefox prevents them from tracking your web browsing from one site
        to the next.
     - Firefox now remembers your preferred location for saved bookmarks,
       displays the bookmarks toolbar by default on new tabs, and gives you
       easy access to all of your bookmarks via a toolbar folder.
     - Native support for macOS devices built with Apple Silicon CPUs brings
       dramatic performance improvements over the non- native build that was
       shipped in Firefox 83: Firefox launches
       over 2.5 times faster and web apps are now twice as responsive (per
        the SpeedoMeter 2.0 test). If you are on a new Apple device, follow
        these steps to upgrade to the latest Firefox.
     - Pinch zooming will now be supported for our users with Windows
       touchscreen devices and touchpads on Mac devices. Firefox users may
       now use pinch to zoom on touch-capable devices to zoom in and out of
     - We’ve improved functionality and design for a number of Firefox
       search features:
       * Selecting a search engine at the bottom of the search panel now
         enters search mode for that engine, allowing you to see suggestions
         (if available) for your search terms. The old behavior (immediately
         performing a search) is available with a shift-click.
       * When Firefox autocompletes the URL of one of your search engines,
         you can now search with that engine directly in the address bar by
         selecting the shortcut in the address bar results.
       * We’ve added buttons at the bottom of the search panel to allow you
         to search your bookmarks, open tabs, and history.
     - Firefox supports AcroForm, which will allow you to fill in, print, and
       save supported PDF forms and the PDF viewer also has a new fresh look.
     - For our users in the US and Canada, Firefox can now save, manage, and
       auto-fill credit card information for you, making shopping on Firefox
       ever more convenient.
     - In addition to our default, dark and light themes, with this release,
       Firefox introduces the Alpenglow theme: a colorful appearance for
       buttons, menus, and windows. You can update your Firefox themes under
       settings or preferences.
   * Changed: Firefox no longer supports Adobe Flash. There is no setting
     available to re-enable Flash support.
   * Enterprise: Various bug fixes and new policies have been implemented in
     the latest version of Firefox. See more details in the Firefox for
     Enterprise 91 Release Notes.

     MFSA 2021-33 (bsc#1188891):

   * CVE-2021-29986: Race condition when resolving DNS names could have led
     to memory corruption
   * CVE-2021-29981: Live range splitting could have led to conflicting
     assignments in the JIT
   * CVE-2021-29988: Memory corruption as a result of incorrect style
   * CVE-2021-29983: Firefox for Android could get stuck in fullscreen mode
   * CVE-2021-29984: Incorrect instruction reordering during JIT optimization
   * CVE-2021-29980: Uninitialized memory in a canvas object could have led
     to memory corruption
   * CVE-2021-29987: Users could have been tricked into accepting unwanted
     permissions on Linux
   * CVE-2021-29985: Use-after-free media channels
   * CVE-2021-29982: Single bit data leak due to incorrect JIT optimization
     and type confusion
   * CVE-2021-29989: Memory safety bugs fixed in Firefox 91 and Firefox ESR
   * CVE-2021-29990: Memory safety bugs fixed in Firefox 91

Patch Instructions:

   To install this SUSE Security Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server 11-SP4-LTSS:

      zypper in -t patch slessp4-MozillaFirefox-14821=1

   - SUSE Linux Enterprise Debuginfo 11-SP4:

      zypper in -t patch dbgsp4-MozillaFirefox-14821=1

Package List:

   - SUSE Linux Enterprise Server 11-SP4-LTSS (x86_64):


   - SUSE Linux Enterprise Debuginfo 11-SP4 (x86_64):



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