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Ubuntu 20.04 LTS: USN-4936-1 Moderate: Thunderbird DoS Issues

Several security issues were fixed in Thunderbird.. =========================================================================Ubuntu Security Notice USN-4936-1 May 06, 2021 thunderbird vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS Summary: Several security issues were fixed in Thunderbird. Software Description: - thunderbird: Mozilla Open Source mail and newsgroup client Details: Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. (CVE-2021-23968, CVE-2021-23969, CVE-2021-23973, CVE-2021-23978) It was discovered that Thunderbird may keep key material in memory in some circumstances. A local attacker could potentially exploit this to obtain private keys. (CVE-2021-29950) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: thunderbird 1:78.8.1+build1-0ubuntu0.20.10.1 Ubuntu 20.04 LTS: thunderbird 1:78.8.1+build1-0ubuntu0.20.04.1 After a standard system update you need to restart Thunderbird to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4936-1 CVE-2021-23968, CVE-2021-23969, CVE-2021-23973, CVE-2021-23978, CVE-2021-29950 Package Information: https://launchpad.net/ubuntu/+source/thunderbird/1:78.8.1+build1-0ubuntu0.20.10.1 https://launchpad.net/ubuntu/+source/thunderbird/1:78.8.1+build1-0ubuntu0.20.04.1 . Numerous security flaws impacting Thunderbird on Ubuntu necessitate urgent updates to maintain system safety and integrity.. Ubuntu Thunderbird Threats, Thunderbird Security Update, Ubuntu 20.04 LTS Issues. .Severity: Important. LinuxSecurity.com Team

May 06, 2021 •Important Ubuntu