Ubuntu Brings Thunderbird 91 to Older Releases to Fix Security Flaw

Thunderbird 91 is being back-ported to Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. A security vulnerability affecting the Thunderbird 78.x series both builds offer is being actively exploited in the wild. But as upstream support for Thunderbird 78.x has ended the flaw is unlikely be ever be patched. For an Ubuntu LTS releases that’s a major issue. CVE-2021-38503 is being actively exploited and it will not be fixed in Thunderbird 78.x So, to ensure its users are not affected, Ubuntu developers are backporting the latest Thunderbird 91 release (which is an extended support release, thankfully) to Ubuntu 18.04 LTS, Ubuntu […]

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