Fedora 27: 689e9b1af5 Moderate Fix for Cyrus IMAP Security Issue

The Cyrus IMAP (Internet Message Access Protocol) server provides access to

personal mail, system-wide bulletin boards, news-feeds, calendar and contacts

through the IMAP, JMAP, NNTP, CalDAV and CardDAV protocols. The Cyrus IMAP

server is a scalable enterprise groupware system designed for use from small to

large enterprise environments using technologies based on well-established Open

Standards.

A full Cyrus IMAP implementation allows a seamless mail and bulletin board

environment to be set up across one or more nodes. It differs from other IMAP

server implementations in that it is run on sealed nodes, where users are not

normally permitted to log in. The mailbox database is stored in parts of the

filesystem that are private to the Cyrus IMAP system. All user access to mail

is through software using the IMAP, IMAPS, JMAP, POP3, POP3S, KPOP, CalDAV

and/or CardDAV protocols.

The private mailbox database design gives the Cyrus IMAP server large

advantages in efficiency, scalability, and administratability. Multiple

concurrent read/write connections to the same mailbox are permitted. The server

supports access control lists on mailboxes and storage quotas on mailbox

hierarchies.

Update to latest upstream version 3.0.4. This fixes a handful bugs, including

one security issue (CVE-2017-14230).

[ 1 ] Bug #1488132 - cyrus-imapd-3.0.4 is available

https://bugzilla.redhat.com/show_bug.cgi?id=1488132

su -c 'dnf upgrade cyrus-imapd' at the command line.

For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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