Your submission was sent successfully! Close

USN-4674-2: Dovecot vulnerability

04 January 2021

Dovecot could be made to denial of service if it received a specially crafted MIME.



  • dovecot - IMAP and POP3 email server


USN-4674-1 fixed a vulnerability in Dovecot. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME
parsing. A remote attacker could possibly use this issue to cause Dovecot
to crash, resulting in a denial of service. (CVE-2020-25275)

Update instructions

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

Ubuntu 14.04

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


Related notices

  • USN-4674-1: dovecot-ldap, dovecot-lmtpd, dovecot-sqlite, dovecot-mysql, dovecot-submissiond, dovecot-gssapi, dovecot-managesieved, dovecot-solr, mail-stack-delivery, dovecot-pgsql, dovecot-lucene, dovecot-pop3d, dovecot, dovecot-imapd, dovecot-core, dovecot-dev, dovecot-auth-lua, dovecot-sieve