Security update for MozillaThunderbird (important)

An update that fixes four vulnerabilities is now available.

Description:

This update for MozillaThunderbird fixes the following issues:

Mozilla Thunderbird 78.12

 * fixed: Sending an email containing HTML links with spaces in the URL
   sometimes resulted in broken links
 * fixed: Folder Pane display theme fixes for macOS
 * fixed: Chat account settings did not always save as expected
 * fixed: RSS feed subscriptions sometimes lost
 * fixed: Calendar: A parsing error for alarm triggers of type "DURATION"
   caused sync problems for some users
 * fixed: Various security fixes

MFSA 2021-30 (bsc#1188275)

• CVE-2021-29969: IMAP server responses sent by a MITM prior to STARTTLS
  could be processed
• CVE-2021-29970: Use-after-free in accessibility features of a document
• CVE-2021-30547: Out of bounds write in ANGLE
• CVE-2021-29976: Memory safety bugs fixed in Thunderbird 78.12

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-2021-1091=1