When a BigInt was right-shifted the backing store was not properly cleared, allowing uninitialized memory to be read. #CVE-2020-16042: Operations on a BigInt could have caused uninitialized memory to be exposed Reporter André Bargull Impact critical Description 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. We hope you have found this to be helpful.Mozilla Foundation Security Advisory 2020-56 Security Vulnerabilities fixed in Thunderbird 78.6 Announced DecemImpact critical Products Thunderbird Fixed in This is what a right click menu looks like now: Then type archive_enable in the search box at the top:ĭouble click on the word “true”, and it will change to “false”.Īnd just like that, VOILA! The “feature” is now disabled. Here is the click path for disabling this pernicious feature: Tools > Options > General > Scroll to bottom > Config Editor … > I accept the risk It’s important to note that if you accidentally type ‘a’ while an e-mail is highlighted before this feature is disabled, poof, your e-mail will be archived. Here’s what a right-click menu looks like in Mozilla Thunderbird before the Archive feature is disabled: There is one particularly annoying feature, however, that we disable on our own computers and today we’d like to show you how in case you also wish to change this setting.Īt this point I’d like to publicly thank Alexis Wilke for sharing these steps originally.

Mozilla Thunderbird has a very simple interface, and it gets the job done 99% of the time.

Although the vast majority of our clients use Microsoft Outlook as their e-mail client, there is a useful, open-source alternative called Mozilla Thunderbird that some prefer.

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