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USN-4110-4: Dovecot regression

28 August 2019

USN-4110-1 introduced a regression in Dovecot.

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Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

USN-4110-1 fixed a vulnerability in Dovecot. The update introduced
a regression causing a wrong check. This update fixes the problem for
Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

We apologize for the inconvenience.

Original advisory details:

Nick Roessler and Rafi Rubin discovered that Dovecot incorrectly
handled certain data. An attacker could possibly use this issue
to cause a denial of service or execute arbitrary code.

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
Ubuntu 12.04

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

References

Related notices

  • USN-4110-3: dovecot-dev, dovecot-lucene, dovecot-gssapi, dovecot-submissiond, dovecot-pgsql, mail-stack-delivery, dovecot-lmtpd, dovecot-ldap, dovecot-auth-lua, dovecot-core, dovecot-sieve, dovecot-mysql, dovecot-sqlite, dovecot, dovecot-imapd, dovecot-solr, dovecot-pop3d, dovecot-managesieved
  • USN-4110-1: dovecot-dev, dovecot-lucene, dovecot-gssapi, dovecot-submissiond, dovecot-pgsql, mail-stack-delivery, dovecot-lmtpd, dovecot-ldap, dovecot-auth-lua, dovecot-core, dovecot-sieve, dovecot-mysql, dovecot-sqlite, dovecot, dovecot-imapd, dovecot-solr, dovecot-pop3d, dovecot-managesieved
  • USN-4110-2: dovecot-common, dovecot-dev, dovecot-gssapi, dovecot-pgsql, mail-stack-delivery, dovecot-lmtpd, dovecot-ldap, dovecot-core, dovecot-postfix, dovecot-sieve, dovecot-mysql, dovecot-sqlite, dovecot, dovecot-imapd, dovecot-solr, dovecot-pop3d, dovecot-managesieved