CVE-2020-26970

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable (CVE-2020-26970).

These are all security issues fixed in the MozillaThunderbird-91.1.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for MozillaThunderbird fixes the following issues:

• Mozilla Thunderbird was updated to 78.5.1 (MFSA 2020-53, bsc#1179530)
• CVE-2020-26970: Fixed a stack overflow due to incorrect parsing of SMTP server response codes.
• Various bug fixes

This update for MozillaThunderbird fixes the following issues:

• 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

• new: OpenPGP: Added option to disable email subject encryption (bmo#1666073)
• changed: OpenPGP public key import now supports multi-file selection and bulk accepting imported keys (bmo#1665145)
• changed: MailExtensions: getComposeDetails will wait for 'compose-editor-ready' event (bmo#1675012)
• fixed: New mail icon was not removed from the system tray at shutdown (bmo#1664586)
• fixed: 'Place replies in the folder of the message being replied to' did not work when using 'Reply to List' (bmo#522450)
• fixed: Thunderbird did not honor the 'Run search on server' option when searching messages (bmo#546925)
• fixed: Highlight color for folders with unread messages wasn't visible in dark theme (bmo#1676697)
• fixed: OpenPGP: Key were missing from Key Manager (bmo#1674521)
• fixed: OpenPGP: Option to import keys from clipboard always disabled (bmo#1676842)
• fixed: The 'Link' button on the large attachments info bar failed to open…