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USN-3961-1: Dovecot vulnerabilities

30 April 2019

Dovecot could be made to crash if it received specially crafted network traffic.



  • dovecot - IMAP and POP3 email server


It was discovered that the Dovecot Submission login service incorrectly
handled certain operations. A remote attacker could possibly use this issue
to cause Dovecot to crash, resulting in a denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04
Ubuntu 18.10

In general, a standard system update will make all the necessary changes.