Researchers Denis Andazakovic from Ubuntu Lab has discovered that atftp incorrectly handled certain malformed packets.
A remote attacker could send a specially crafted packet
to cause atftpd to crash, resulting in a denial of service.
Denis Andzakovic discovered that atftpd did not properly lock the thread
An attacker could send a large number of tftpd packets
simultaneously when running atftpd in daemon mode to cause atftpd to
crash, resulting in a denial of service. (CVE-2019-11366).
The problem can be corrected by updating your system to the following package versions:
In general, a standard system update will make all the necessary changes.