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USN-3556-2: Dovecot vulnerabilities

1 February 2018

Several security issues were fixed in Dovecot.

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Releases

Packages

  • dovecot - IMAP and POP3 email server

Details

USN-3556-1 fixed vulnerabilities in Dovecot. This update
provides the corresponding update for Ubuntu 12.04 ESM.

It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to bypass authentication and access
sensitive information. (CVE-2013-6171)

Original advisory details:

It was discovered that Dovecot incorrectly handled certain authentications.
An attacker could possibly use this to cause a denial of service. (CVE-2017-15132)

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 12.04

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

Related notices

  • USN-3556-1: dovecot-pop3d, dovecot-sqlite, dovecot-solr, dovecot-ldap, dovecot-gssapi, dovecot-pgsql, dovecot-core, dovecot, dovecot-imapd, dovecot-lucene, dovecot-lmtpd, dovecot-dev, dovecot-mysql, dovecot-sieve, dovecot-managesieved, mail-stack-delivery