Security update for MozillaThunderbird (important)

An update that fixes two vulnerabilities is now available.

Description:

This update for MozillaThunderbird fixes the following issues:

Mozilla Thunderbird 78.11 (bsc#1186696)

Security issues fixed:

• CVE-2021-29964: Out of bounds-read when parsing a WM_COPYDATA message
• CVE-2021-29967: Memory safety bugs fixed in Thunderbird 78.11

General improvements:

• OpenPGP could not be disabled for an account if a key was previously
  configured
• Recipients were unable to decrypt some messages when the sender had
  changed the message encryption from OpenPGP to S/MIME
• Contacts moved between CardDAV address books were not synced to the new
  server
• CardDAV compatibility fixes for Google Contacts
• Folder pane had no clear indication of focus on macOS

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Patch Instructions:

To install this openSUSE 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:

• openSUSE Leap 15.2:

  zypper in -t patch openSUSE-2021-910=1