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             AUSCERT External Security Bulletin Redistribution

                  Security update for MozillaThunderbird
                              4 January 2021


        AusCERT Security Bulletin Summary

Product:           MozillaThunderbird
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
                   Access Confidential Data        -- Remote with User Interaction
                   Reduced Security                -- Existing Account            
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-35113 CVE-2020-35112 CVE-2020-35111
                   CVE-2020-26978 CVE-2020-26974 CVE-2020-26973
                   CVE-2020-26971 CVE-2020-26970 CVE-2020-16042

Reference:         ESB-2020.4524

Original Bulletin: 

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SUSE Security Update: Security update for MozillaThunderbird


Announcement ID:   SUSE-SU-2020:3935-1
Rating:            critical
References:        #1179530 #1180039
Cross-References:  CVE-2020-16042 CVE-2020-26970 CVE-2020-26971 CVE-2020-26973
                   CVE-2020-26974 CVE-2020-26978 CVE-2020-35111 CVE-2020-35112
Affected Products:
                   SUSE Linux Enterprise Workstation Extension 15-SP2

An update that fixes 9 vulnerabilities is now available.


This update for MozillaThunderbird fixes the following issues:

  o Mozilla Thunderbird 78.6 * new: MailExtensions: Added
    browser.windows.openDefaultBrowser() (bmo#1664708) * changed: Thunderbird
    now only shows quota exceeded indications on the main window (bmo#1671748)
    * changed: MailExtensions: menus API enabled in messages being composed
    (bmo#1670832) * changed: MailExtensions: Honor allowScriptsToClose argument
    in windows.create API function (bmo#1675940) * changed: MailExtensions:
    APIs that returned an accountId will reflect the account the message
    belongs to, not what is stored in message headers (bmo#1644032) * fixed:
    Keyboard shortcut for toggling message "read" status not shown in menus
    (bmo#1619248) * fixed: OpenPGP: After importing a secret key, Key Manager
    displayed properties of the wrong key (bmo#1667054) * fixed: OpenPGP:
    Inline PGP parsing improvements (bmo#1660041) * fixed: OpenPGP: Discovering
    keys online via Key Manager sometimes failed on Linux (bmo#1634053) *
    fixed: OpenPGP: Encrypted attachment "Decrypt and Open/Save As" did not
    work (bmo#1663169) * fixed: OpenPGP: Importing keys failed on macOS (bmo#
    1680757) * fixed: OpenPGP: Verification of clear signed UTF-8 text failed
    (bmo#1679756) * fixed: Address book: Some columns incorrectly displayed no
    data (bmo#1631201) * fixed: Address book: The address book view did not
    update after changing the name format in the menu (bmo#1678555) * fixed:
    Calendar: Could not import an ICS file into a CalDAV calendar (bmo#1652984)
    * fixed: Calendar: Two "Home" calendars were visible on a new profile (bmo#
    1656782) * fixed: Calendar: Dark theme was incomplete on Linux (bmo#
    1655543) * fixed: Dark theme did not apply to new mail notification popups
    (bmo#1681083) * fixed: Folder icon, message list, and contact side bar
    visual improvements (bmo#1679436) * fixed: MailExtensions: HTTP refresh in
    browser content tabs did not work (bmo#1667774) * fixed: MailExtensions:
    messageDisplayScripts failed to run in main window (bmo#1674932) * fixed:
    Various security fixes MFSA 2020-56 (bsc#1180039) * CVE-2020-16042 (bmo#
    1679003) Operations on a BigInt could have caused uninitialized memory to
    be exposed * CVE-2020-26971 (bmo#1663466) Heap buffer overflow in WebGL *
    CVE-2020-26973 (bmo#1680084) CSS Sanitizer performed incorrect sanitization
    * CVE-2020-26974 (bmo#1681022) Incorrect cast of StyleGenericFlexBasis
    resulted in a heap use-after-free * CVE-2020-26978 (bmo#1677047) Internal
    network hosts could have been probed by a malicious webpage *
    CVE-2020-35111 (bmo#1657916) The proxy.onRequest API did not catch
    view-source URLs * CVE-2020-35112 (bmo#1661365) Opening an extension-less
    download may have inadvertently launched an executable instead *
    CVE-2020-35113 (bmo#1664831, bmo#1673589) Memory safety bugs fixed in
    Thunderbird 78.6

Mozilla Thunderbird 78.5.1

  o new: OpenPGP: Added option to disable email subject encryption (bmo#
  o changed: OpenPGP public key import now supports multi-file selection and
    bulk accepting imported keys (bmo#1665145)
  o changed: MailExtensions: getComposeDetails will wait for
    "compose-editor-ready" event (bmo#1675012)
  o fixed: New mail icon was not removed from the system tray at shutdown (bmo#
  o fixed: "Place replies in the folder of the message being replied to" did
    not work when using "Reply to List" (bmo#522450)
  o fixed: Thunderbird did not honor the "Run search on server" option when
    searching messages (bmo#546925)
  o fixed: Highlight color for folders with unread messages wasn't visible in
    dark theme (bmo#1676697)
  o fixed: OpenPGP: Key were missing from Key Manager (bmo#1674521)
  o fixed: OpenPGP: Option to import keys from clipboard always disabled (bmo#
  o fixed: The "Link" button on the large attachments info bar failed to open
    up Filelink section in Options if the user had not yet configured Filelink
  o fixed: Address book: Printing members of a mailing list resulted in
    incorrect output (bmo#1676859)
  o fixed: Unable to connect to LDAP servers configured with a self-signed SSL
    certificate (bmo#1659947)
  o fixed: Autoconfig via LDAP did not work as expected (bmo#1662433)
  o fixed: Calendar: Pressing Ctrl-Enter in the new event dialog would create
    duplicate events (bmo#1668478)
  o fixed: Various security fixes

MFSA 2020-53 (bsc#1179530)

  o CVE-2020-26970 (bmo#1677338) Stack overflow due to incorrect parsing of
    SMTP server response codes

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:

  o SUSE Linux Enterprise Workstation Extension 15-SP2:
    zypper in -t patch SUSE-SLE-Product-WE-15-SP2-2020-3935=1

Package List:

  o SUSE Linux Enterprise Workstation Extension 15-SP2 (x86_64):


  o https://www.suse.com/security/cve/CVE-2020-16042.html
  o https://www.suse.com/security/cve/CVE-2020-26970.html
  o https://www.suse.com/security/cve/CVE-2020-26971.html
  o https://www.suse.com/security/cve/CVE-2020-26973.html
  o https://www.suse.com/security/cve/CVE-2020-26974.html
  o https://www.suse.com/security/cve/CVE-2020-26978.html
  o https://www.suse.com/security/cve/CVE-2020-35111.html
  o https://www.suse.com/security/cve/CVE-2020-35112.html
  o https://www.suse.com/security/cve/CVE-2020-35113.html
  o https://bugzilla.suse.com/1179530
  o https://bugzilla.suse.com/1180039

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