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USN-4674-2: Dovecot vulnerability

4 January 2021

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

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Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

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)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

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.

References

Related notices

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