USN-3881-2: Dovecot vulnerability
05 February 2019
Dovecot could be made to expose sensitive information over the network.
- dovecot - IMAP and POP3 email server
USN-3881-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Dovecot incorrectly handled client certificates. A
remote attacker in possession of a valid certificate with an empty username
field could possibly use this issue to impersonate other users.