thunderbird-68.3.0

[Douglas R. Reno]

New minor version

[Tim Tassonis]

What’s New

new

Message display toolbar action WebExtension API new

Navigation buttons are now available in content tabs, for example those opened via an add-on search changed

"New email" icon in Windows systray changed from in-tray with arrow to envelope fixed

Icons of attachments in the attachment pane of the Write window not always correct fixed

Toolbar buttons of add-ons in the menubar not shown after startup fixed

LDAP lookup not working when SSL was enabled. LDAP search not working when "All Address Books" was selected. fixed

Scam link confirmation panel not working fixed

In Write window, the Link Properties dialog wasn't showing named anchors in context menu fixed

Calendar: Start-up failed if the application menu is not on the calendar toolbars fixed

Chat: Account reordering via drag-and-drop not working on Instant messaging status dialog (Show Accounts) fixed

Various security fixes

[Tim Tassonis]

Fixed in revision 22426.

[Douglas R. Reno]

Retroactively promote to High

​https://www.mozilla.org/en-US/security/advisories/mfsa2019-38/

Mozilla Foundation Security Advisory 2019-38
Security Vulnerabilities fixed in - Thunderbird 68.3

Announced
    December 3, 2019
Impact
    high
Products
    Thunderbird
Fixed in

        Thunderbird 68.3

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.
#CVE-2019-17008: Use-after-free in worker destruction

Reporter
    Looben Yang
Impact
    high

Description

When using nested workers, a use-after-free could occur during worker destruction. This resulted in a potentially exploitable crash.
References

    Bug 1546331

#CVE-2019-13722: Stack corruption due to incorrect number of arguments in WebRTC code

Reporter
    Alexandru Michis
Impact
    high

Description

When setting a thread name on Windows in WebRTC, an incorrect number of arguments could have been supplied, leading to stack corruption and a potentially exploitable crash.
Note: this issue only occurs on Windows. Other operating systems are unaffected.
References

    Bug 1580156

#CVE-2019-11745: Out of bounds write in NSS when encrypting with a block cipher

Reporter
    Craig Disselkoen
Impact
    high

Description

When encrypting with a block cipher, if a call to NSC_EncryptUpdate was made with data smaller than the block size, a small out of bounds write could occur. This could have caused heap corruption and a potentially exploitable crash.
References

    Bug 1586176

#CVE-2019-17009: Updater temporary files accessible to unprivileged processes

Reporter
    Robert Strong
Impact
    moderate

Description

When running, the updater service wrote status and log files to an unrestricted location; potentially allowing an unprivileged process to locate and exploit a vulnerability in file handling in the updater service.
Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.
References

    Bug 1510494

#CVE-2019-17010: Use-after-free when performing device orientation checks

Reporter
    Nils
Impact
    moderate

Description

Under certain conditions, when checking the Resist Fingerprinting preference during device orientation checks, a race condition could have caused a use-after-free and a potentially exploitable crash.
References

    Bug 1581084

#CVE-2019-17005: Buffer overflow in plain text serializer

Reporter
    Mirko Brodesser
Impact
    moderate

Description

The plain text serializer used a fixed-size array for the number of

    elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash.

    References
        Bug 1584170

#CVE-2019-17011: Use-after-free when retrieving a document in antitracking

Reporter
    Nils
Impact
    moderate

Description

Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race condition could cause a use-after-free condition and a potentially exploitable crash.
References

    Bug 1591334

#CVE-2019-17012: Memory safety bugs fixed in Firefox 71, Firefox ESR 68.3, and Thunderbird 68.3

Reporter
    Mozilla developers and community
Impact
    high

Description

Mozilla developers Christoph Diehl, Nathan Froyd, Jason Kratzer, Christian Holler, Karl Tomlinson, Tyson Smith reported memory safety bugs present in Firefox 70 and Firefox ESR 68.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
References

    Memory safety bugs fixed in Firefox 71, Firefox ESR 68.3, and Thunderbird 68.3