==========================================================================
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
