- Dovecot-news - dovecot.org

Released Pigeonhole v0.4.22 for Dovecot v2.2.34.
by Stephan Bosch 01 Mar '18

01 Mar '18

Hello Dovecot users, Here is a new Pigeonhole release that goes with the new Dovecot v2.2.34 release. This release is not strictly necessary, as previous versions should be usable as well. This release only contains bugfixes. Changelog v0.4.22: - Fixed filesystem path handling problem: sieve plugin could have assert-crashed with specific path lengths with: "Panic: file realpath.c: line 86 (path_normalize): assertion failed: (npath_pos + 1 < npath + asize)". - Sieve extprograms plugin: Large output from "execute" command crashed delivery. Fixed buffering issue in code that handles output from the external program. - editheader extension: Extensively reworked the low-level implementation of adding and removing headers. This solves a few integer arithmetic problems reported by Clang runtime checks, but also improves code structure and reliability in general. - imapsieve: Fix assert crash occurring when selected messages are expunged concurrently by the time Sieve filter is to be applied. - imap4flags extension: Fix binary byte-code corruption occurring when the setflag, addflag, or removeflag command's flag-list is a variable. - enotify extension: mailto method: Fixed parsing of mailto URI with only a header part. - enotify extension: mailto method: Make sure "From:" header is set to a usable address and not "(null)". - Fixed writing address headers to outgoing messages. It sometimes erroneously applied another layer of MIME header encoding. The release is available as follows: https://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.22.t… https://pigeonhole.dovecot.org/releases/2.2/dovecot-2.2-pigeonhole-0.4.22.t… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.3.0.1 released
by Timo Sirainen 28 Feb '18

28 Feb '18

https://dovecot.org/releases/2.3/dovecot-2.3.0.1.tar.gz https://dovecot.org/releases/2.3/dovecot-2.3.0.1.tar.gz.sig Small patch release to fix the worst bugs in v2.3.0. v2.3.1 is coming in about a month with a lot more changes. * CVE-2017-15130: TLS SNI config lookups may lead to excessive memory usage, causing imap-login/pop3-login VSZ limit to be reached and the process restarted. This happens only if Dovecot config has local_name { } or local { } configuration blocks and attacker uses randomly generated SNI servernames. * CVE-2017-14461: Parsing invalid email addresses may cause a crash or leak memory contents to attacker. For example, these memory contents might contain parts of an email from another user if the same imap process is reused for multiple users. First discovered by Aleksandar Nikolic of Cisco Talos. Independently also discovered by "flxflndy" via HackerOne. * CVE-2017-15132: Aborted SASL authentication leaks memory in login process. * Linux: Core dumping is no longer enabled by default via PR_SET_DUMPABLE, because this may allow attackers to bypass chroot/group restrictions. Found by cPanel Security Team. Nowadays core dumps can be safely enabled by using "sysctl -w fs.suid_dumpable=2". If the old behaviour is wanted, it can still be enabled by setting: import_environment=$import_environment PR_SET_DUMPABLE=1 - imap-login with SSL/TLS connections may end up in infinite loop

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v2.2.34 released
by Timo Sirainen 28 Feb '18

28 Feb '18

https://dovecot.org/releases/2.2/dovecot-2.2.34.tar.gz https://dovecot.org/releases/2.2/dovecot-2.2.34.tar.gz.sig * CVE-2017-15130: TLS SNI config lookups may lead to excessive memory usage, causing imap-login/pop3-login VSZ limit to be reached and the process restarted. This happens only if Dovecot config has local_name { } or local { } configuration blocks and attacker uses randomly generated SNI servernames. * CVE-2017-14461: Parsing invalid email addresses may cause a crash or leak memory contents to attacker. For example, these memory contents might contain parts of an email from another user if the same imap process is reused for multiple users. First discovered by Aleksandar Nikolic of Cisco Talos. Independently also discovered by "flxflndy" via HackerOne. * CVE-2017-15132: Aborted SASL authentication leaks memory in login process. * Linux: Core dumping is no longer enabled by default via PR_SET_DUMPABLE, because this may allow attackers to bypass chroot/group restrictions. Found by cPanel Security Team. Nowadays core dumps can be safely enabled by using "sysctl -w fs.suid_dumpable=2". If the old behaviour is wanted, it can still be enabled by setting: import_environment=$import_environment PR_SET_DUMPABLE=1 * doveconf output now includes the hostname. + mail_attachment_detection_options setting controls when $HasAttachment and $HasNoAttachment keywords are set for mails. + imap: Support fetching body snippets using FETCH (SNIPPET) or (SNIPPET (LAZY=FUZZY)) + fs-compress: Automatically detect whether input is compressed or not. Prefix the compression algorithm with "maybe-" to enable the detection, for example: "compress:maybe-gz:6:..." + Added settings to change dovecot.index* files' optimization behavior. See https://wiki2.dovecot.org/IndexFiles#Settings + Auth cache can now utilize auth workers to do password hash verification by setting auth_cache_verify_password_with_worker=yes. + Added charset_alias plugin. See https://wiki2.dovecot.org/Plugins/CharsetAlias + imap_logout_format and pop3_logout_format settings now support all of the generic variables (e.g. %{rip}, %{session}, etc.) + Added auth_policy_check_before_auth, auth_policy_check_after_auth and auth_policy_report_after_auth settings. - v2.2.33: doveadm-server: Various fixes related to log handling. - v2.2.33: doveadm failed when trying to access UNIX socket that didn't require authentication. - v2.2.33: doveadm log reopen stopped working - v2.2.30+: IMAP stopped advertising SPECIAL-USE capability - v2.2.30+: IMAP stopped sending untagged OK/NO storage notifications - replication: dsync sends unnecessary replication notification for changes it does internally. NOTE: Folder creates, renames, deletes and subscribes still trigger unnecessary replication notifications, but these should be rather rare. - mail_always/never_cache_fields setting changes weren't applied for existing dovecot.index.cache files. - Fix compiling and other problems with OpenSSL v1.1 - auth policy: With master user logins, lookup using login username. - FTS reindexed all mails unnecessarily after loss of dovecot.index.cache file - mdbox rebuild repeatedly fails with "missing map extension" - SSL connections may have been hanging with imapc or doveadm client. - cassandra: Using protocol v3 (Cassandra v2.1) caused memory leaks and also timestamps weren't set to queries. - fs-crypt silently ignored public/private keys specified in configuration (mail_crypt_global_public/private_key) and just emitted plaintext output. - lock_method=dotlock caused crashes - imapc: Reconnection may cause crashes and other errors

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Released Pigeonhole v0.5.0.1 for Dovecot v2.3.0.
by Stephan Bosch 05 Jan '18

05 Jan '18

Hello Dovecot users, This is a bugfix release to mend some problems that were found in v0.5.0. The imap4flags bug is actually not first seen in the 0.5.0 release (it is ancient), but I included the fix for it anyway. Changelog v0.5.0.1: - imap4flags extension: Fix binary corruption occurring when setflag/addflag/removeflag flag-list is a variable. - sieve-extprograms plugin: Fix segfault occurring when used in IMAPSieve context. The release is available as follows: https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.0.1.… https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.0.1.… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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Package repository now available
by aki.tuomi＠dovecot.fi 27 Dec '17

27 Dec '17

Dovecot now has package repository for Debian, CentOS and Ubuntu available at https://repo.dovecot.org/ Packages are provided for 2.3 series and forward. Please let us know if you run into any trouble with these. --- Aki Tuomi Dovecot oy

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Released Pigeonhole v0.5.0 for Dovecot v2.3.0.
by Stephan Bosch 24 Dec '17

24 Dec '17

Hello Dovecot users, Here's the definitive 0.5.0 release. There is one RC fix regarding the duplicate presence of the session ID in the LMTP/LDA log lines produced by the Sieve interpreter. Since this change is relative to the RC, it is not in the change log below. Changelog v0.5.0: * editheader extension: The implementation of header modifications is heavily updated. Although the functionality has not changed, the underlying code was updated to address several static analysis warnings, runtime integer arithmetic warnings (Clang), and to match updates in the Dovecot stream API. + variables extension: Made the maximum scope and variable size configurable. + subaddress: Support multiple recipient_delimiters. - enotify extension: mailto method: Fixed parsing of mailto URI with only a header part. - enotify plugin: mailto method: Make sure the "From:" header is set to a usable address and not "(null)". - Fixed writing address headers to outgoing messages. Sometimes headers were MIME-encoded twice, yielding invalid results. The release is available as follows: https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.0.ta… https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.0.ta… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.3.0 released
by Timo Sirainen 22 Dec '17

22 Dec '17

https://dovecot.org/releases/2.3/dovecot-2.3.0.tar.gz https://dovecot.org/releases/2.3/dovecot-2.3.0.tar.gz.sig Some random notes: - This release is signed with a new PGP key 0x18A348AEED409DA1 (which is signed by the old key). - This fixes several compiling issues reported for the 2.3 release candidate. Also a few other fixes mainly for submission server and doveadm server. - We're still planning to make at least one (or two) more v2.2.x release before retiring it. It's now time for Christmas holidays though, so the next release will have to wait until the end of January. - We'll start distributing v2.3.x releases in apt/yum repositories in near future. There will be a separate email about it. Some repetition from the release candidate's announcement: There are several new and exciting features in v2.3.0. I'm especially happy about the new logging and statistics code, which will allow us to generate statistics for just about everything. We didn't have time to implement everything we wanted for them yet, and there especially aren't all that many logging events yet that can be used for statistics. We'll implement those to v2.3.1, which might also mean that some of the APIs might still change in v2.3.1 if that's required. We also have new lib-smtp server code, which was used to implement SMTP submission server and do a partial rewrite for LMTP server. Some of the larger changes: * Various setting changes, see https://wiki2.dovecot.org/Upgrading/2.3 * Logging rewrite started: Logging is now based on hierarchical events. This makes it possible to do various things, like: 1) giving consistent log prefixes, 2) enabling debug logging with finer granularity, 3) provide logs in more machine readable formats (e.g. json). Everything isn't finished yet, especially a lot of the old logging code still needs to be translated to the new way. * Statistics rewrite started: Stats are now based on (log) events. It's possible to gather statistics about any event that is logged. See http://wiki2.dovecot.org/Statistics for details * ssl_dh setting replaces the old generated ssl-parameters.dat * IMAP: When BINARY FETCH finds a broken mails, send [PARSE] error instead of [UNKNOWNCTE] * Linux: core dumping via PR_SET_DUMPABLE is no longer enabled by default due to potential security reasons (found by cPanel Security Team). + Added support for SMTP submission proxy server, which includes support for BURL and CHUNKING extension. + LMTP rewrite. Supports now CHUNKING extension and mixing of local/proxy recipients. + auth: Support libsodium to add support for ARGON2I and ARGON2ID password schemes. + auth: Support BLF-CRYPT password scheme in all platforms + auth: Added LUA scripting support for passdb/userdb. See https://wiki2.dovecot.org/AuthDatabase/Lua - Input streams are more reliable now when there are errors or when the maximum buffer size is reached. Previously in some situations this could have caused Dovecot to try to read already freed memory. - Output streams weren't previously handling failures when writing a trailer at the end of the stream. This mainly affected encrypt and zlib compress ostreams, which could have silently written truncated files if the last write happened to fail (which shouldn't normally have ever happened). - virtual plugin: Fixed panic when fetching mails from virtual mailboxes with IMAP BINARY extension. - doveadm-server: Fix potential hangs with SSL connections - doveadm proxy: Reading commands' output from v2.2.33+ servers could have caused the output to be corrupted or caused a crash. - Many other smaller fixes

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Released Pigeonhole v0.5.0.rc1 for Dovecot v2.3.0.rc1.
by Stephan Bosch 18 Dec '17

18 Dec '17

Hello Dovecot users, Here is the Pigeonhole release candidate that goes with the Dovecot v2.3 release candidate. Of course, a large part of this release consists of compatibility changes for Dovecot v2.3. Apart from that, not much changed, just a few additions and fixes that accumulated over the last few months. Most of these changes will be back-ported to Pigeonhole v0.4, but that release will happen a little later. Changelog v0.5.0: * editheader extension: The implementation of header modifications is heavily updated. Although the functionality has not changed, the underlying code was updated to address several static analysis warnings, runtime integer arithmetic warnings (Clang), and to match updates in the Dovecot stream API. + variables extension: Made the maximum scope and variable size configurable. + subaddress: Support multiple recipient_delimiters. - enotify extension: mailto method: Fixed parsing of mailto URI with only a header part. - enotify plugin: mailto method: Make sure the "From:" header is set to a usable address and not "(null)". - Fixed writing address headers to outgoing messages. Sometimes headers were MIME-encoded twice, yielding invalid results. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.3/rc/dovecot-2.3-pigeonhole-0.5.0.… http://pigeonhole.dovecot.org/releases/2.3/rc/dovecot-2.3-pigeonhole-0.5.0.… Refer to http://pigeonhole.dovecot.org and the Dovecot wiki for more information. Have fun testing this release candidate and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.3.0 release candidate released
by Timo Sirainen 18 Dec '17

18 Dec '17

https://dovecot.org/releases/2.3/rc/dovecot-2.3.0.rc1.tar.gz https://dovecot.org/releases/2.3/rc/dovecot-2.3.0.rc1.tar.gz.sig It's finally time for v2.3 release branch! There are several new and exciting features in it. I'm especially happy about the new logging and statistics code, which will allow us to generate statistics for just about everything. We didn't have time to implement everything we wanted for them yet, and there especially aren't all that many logging events yet that can be used for statistics. We'll implement those to v2.3.1, which might also mean that some of the APIs might still change in v2.3.1 if that's required. We also have new lib-smtp server code, which was used to implement SMTP submission server and do a partial rewrite for LMTP server. Please test these before v2.3.0 to make sure we don't have any bad bugs left! BTW. The v2.3.0 will most likely be signed with a new PGP key ED409DA1. Some of the larger changes: * Various setting changes, see https://wiki2.dovecot.org/Upgrading/2.3 * Logging rewrite started: Logging is now based on hierarchical events. This makes it possible to do various things, like: 1) giving consistent log prefixes, 2) enabling debug logging with finer granularity, 3) provide logs in more machine readable formats (e.g. json). Everything isn't finished yet, especially a lot of the old logging code still needs to be translated to the new way. * Statistics rewrite started: Stats are now based on (log) events. It's possible to gather statistics about any event that is logged. See http://wiki2.dovecot.org/Statistics for details * ssl_dh setting replaces the old generated ssl-parameters.dat * IMAP: When BINARY FETCH finds a broken mails, send [PARSE] error instead of [UNKNOWNCTE] * Linux: core dumping via PR_SET_DUMPABLE is no longer enabled by default due to potential security reasons (found by cPanel Security Team). + Added support for SMTP submission proxy server, which includes support for BURL and CHUNKING extension. + LMTP rewrite. Supports now CHUNKING extension and mixing of local/proxy recipients. + auth: Support libsodium to add support for ARGON2I and ARGON2ID password schemes. + auth: Support BLF-CRYPT password scheme in all platforms + auth: Added LUA scripting support for passdb/userdb. See https://wiki2.dovecot.org/AuthDatabase/Lua - Input streams are more reliable now when there are errors or when the maximum buffer size is reached. Previously in some situations this could have caused Dovecot to try to read already freed memory. - Output streams weren't previously handling failures when writing a trailer at the end of the stream. This mainly affected encrypt and zlib compress ostreams, which could have silently written truncated files if the last write happened to fail (which shouldn't normally have ever happened). - virtual plugin: Fixed panic when fetching mails from virtual mailboxes with IMAP BINARY extension. - Many other smaller fixes

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v2.2.33.2 released
by Timo Sirainen 20 Oct '17

20 Oct '17

https://dovecot.org/releases/2.2/dovecot-2.2.33.2.tar.gz https://dovecot.org/releases/2.2/dovecot-2.2.33.2.tar.gz.sig One more patch release with some fixes: - doveadm: Fix crash in proxying (or dsync replication) if remote is running older than v2.2.33 - auth: Fix memory leak in %{ldap_dn} - dict-sql: Fix data types to work correctly with Cassandra

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