14 DAY TRIAL // Today, January 7, 2016, Mozilla has announced the immediate availability for download of the Mozilla Thunderbird 38.5.0 email, news and chat client for all supported platforms, including Microsoft Windows, Mac OS X, and GNU/Linux.
According to the release notes, Mozilla Thunderbird 38.5.0 is yet another bugfix release that addresses multiple security issues discovered by Mozilla or third-party developers since the previous version of the software, which was announced at the end of November 2015.
Among these, we can mention an integer overflow in the playback of MP4 files on 64-bit builds of Thunderbird, an underflow through code inspection, another integer overflow, this time related to the allocation of huge textures, a cross-site reading attack through view-source URIs, as well as several memory safety issues.
Furthermore, Mozilla Thunderbird 38.5.0 updates the contacts sidebar in the address book manager to remember the last selected address book, and prepares the software to use an SHA-256 signing certificate on Microsoft Windows operating systems, in order to meet Mozilla's new signing requirement.
Mozilla Thunderbird 38.5.1 out now
On the same day, Mozilla has released a hotfix update for Mozilla Thunderbird 38.5.0, version 38.5.1, which actually adds the necessary changes to the Windows build of the software to use an SHA-256 signing certificate, thus meeting the new add-ons/extension signing requirements implemented by Mozilla in its software products.
As usual, we recommend all users of the Mozilla Thunderbird software to update it in their operating systems as soon as possible, either by using the built-in updater, if available, or by downloading the binary packages for GNU/Linux, Mac OS X, and Microsoft Windows platforms right now from Softpedia.
The application's source can also be downloaded if you click on the GNU/Linux link above, just in case you want to compile the latest Mozilla Thunderbird version on your Linux box, otherwise we recommend updating the software from the default software repositories of your distribution.