Thunderbird version 68.7.0, first offered to channel users on April 8, 2020 is now available to Ubuntu users.
In the release notes we can read what is new, changed and fixed.
Below is the Ubuntu Security Notice USN-4328-1
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.10 - Ubuntu 18.04 LTS Summary: Several security issues were fixed in Thunderbird. Software Description: - thunderbird: Mozilla Open Source mail and newsgroup client Details: It was discovered that Message ID calculation was based on uninitialized data. An attacker could potentially exploit this to obtain sensitive information. (CVE-2020-6792) Mutiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. (CVE-2020-6793, CVE-2020-6795, CVE-2020-6822) It was discovered that if a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords would still be accessible. A local user could exploit this to obtain sensitive information. (CVE-2020-6794) Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, conduct cross-site scripting (XSS) attacks, obtain sensitive information, or execute arbitrary code. (CVE-2019-20503, CVE-2020-6798, CVE-2020-6800, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807, CVE-2020-6812, CVE-2020-6814, CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6825) It was discovered that the Devtools’ ‘Copy as cURL’ feature did not fully escape website-controlled data. If a user were tricked in to using the ‘Copy as cURL’ feature to copy and paste a command with specially crafted data in to a terminal, an attacker could potentially exploit this to execute arbitrary commands via command injection. (CVE-2020-6811) Update instructions: The problem can be corrected by updating your system to the followingpackage versions: Ubuntu 19.10: thunderbird 1:68.7.0+build1-0ubuntu0.19.10.1 Ubuntu 18.04 LTS: thunderbird 1:68.7.0+build1-0ubuntu0.18.04.1 After a standard system update you need to restart Thunderbird to make all the necessary changes. References: https://usn.ubuntu.com/4328-1 CVE-2019-20503, CVE-2020-6792, CVE-2020-6793, CVE-2020-6794, CVE-2020-6795, CVE-2020-6798, CVE-2020-6800, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807, CVE-2020-6811, CVE-2020-6812, CVE-2020-6814, CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825 Package Information: 1:68.7.0+build1-0ubuntu0.19.10.1 1:68.7.0+build1-0ubuntu0.18.04.1