thunderbird-115.8.1

[Bruce Dubbs]

New point version.

[Douglas R. Reno]

Release Notes

• Settings: Updating tags failed if Automatic Updates were disabled
• Size of collapsed folders in folder pane did not include size of subfolders
• Reversing sort order of Grouped By views in quick search did not reverse
• Removing threaded messages in a unified folder sometimes resulted in an incorrect number of levels in the thread
• Thread collapsing did not behave correctly when copying thread messages in multi-folder view
• S/MIME encryption failed to encrypt if unsupported certificate type was encountered
• Decrypting a copy of an S/MIME encrypted, opaque-signed message created an unreadable message
• Thunderbird sometimes changed the subject of messages selected while simultaneously decrypting a large PGP-encrypted message
• "Quote message" menu item in compose window did not work when replying to message opened in separate tab
• Toolbar customization window contents overflowed the window width
• Security fixes

Security Fixes

CVE-2024-1936: Leaking of encrypted email subjects to other conversations

Reporter

Several community reporters

Impact

high

Description

The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments.

[Douglas R. Reno]

Fixed at 42f5a7b00b722e42cebfb455c198d7c10c6e3f90

SA-12.1-004 issued