========================================================================== Ubuntu Security Notice USN-4718-1 February 02, 2021
fastd vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: fastd could be made to denial of service it if received a specially crafted input. Software Description: - fastd: Fast and Secure Tunneling Daemon Details: It was discovered that fastd incorrectly handled certain packets. An attacker could possibly use this issue to cause a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: fastd 19-3ubuntu0.1 Ubuntu 18.04 LTS: fastd 18-3ubuntu0.18.04.1 Ubuntu 16.04 LTS: fastd 17-4ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4718-1 CVE-2020-27638 Package Information: https://launchpad.net/ubuntu/+source/fastd/19-3ubuntu0.1 https://launchpad.net/ubuntu/+source/fastd/18-3ubuntu0.18.04.1 https://launchpad.net/ubuntu/+source/fastd/17-4ubuntu0.1
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