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Ubuntu 20.04 LTS USN-4614-1 Moderate: GDM Privileged User Issue

GDM could be made to create privileged users.. =========================================================================Ubuntu Security Notice USN-4614-1 November 03, 2020 gdm3 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: GDM could be made to create privileged users. Software Description: - gdm3: GNOME Display Manager Details: Kevin Backhouse discovered that GDM incorrectly launched the initial setup tool when the accountsservice daemon was not reachable. A local attacker able to cause accountsservice to crash or stop responding could trick GDM into launching the initial setup tool and create a privileged user. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: gdm3 3.38.1-2ubuntu1.1 Ubuntu 20.04 LTS: gdm3 3.36.3-0ubuntu0.20.04.2 Ubuntu 18.04 LTS: gdm3 3.28.3-0ubuntu18.04.6 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-4614-1 CVE-2020-16125 Package Information: https://launchpad.net/ubuntu/+source/gdm3/3.38.1-2ubuntu1.1 https://launchpad.net/ubuntu/+source/gdm3/3.36.3-0ubuntu0.20.04.2 https://launchpad.net/ubuntu/+source/gdm3/3.28.3-0ubuntu18.04.6 . A vulnerability in GDM enables the formation of elevated user accounts on Ubuntu 20.10, 20.04 LTS, and 18.04 LTS systems.. GDM Vulnerability, Ubuntu Security Notice, Local User Attack. . LinuxSecurity.com Team

Nov 03, 2020 Ubuntu