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Update dovecot2 to 2.3.9.3, security release.
v2.3.9.3 2019-02-12 Aki Tuomi <aki.tuomi@open-xchange.com>
* CVE-2020-7046: Truncated UTF-8 can be used to DoS
submission-login and lmtp processes.
* CVE-2020-7957: Specially crafted mail can crash snippet generation.
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2.3.4:
* The default postmaster_address is now "postmaster@<user domain or
server hostname>". If username contains the @domain part, that's
used. If not, then the server's hostname is used.
* "doveadm stats dump" now returns two decimals for the "avg" field.
+ Added push notification driver that uses a Lua script
+ Added new SQL, DNS and connection events.
See https://wiki2.dovecot.org/Events
+ Added "doveadm mailbox cache purge" command.
+ Added events API support for Lua scripts
+ doveadm force-resync -f parameter performs "index fsck" while opening
the index. This may be useful to fix some types of broken index files.
This may become the default behavior in a later version.
- director: Kicking a user crashes if login process is very slow
- pop3_no_flag_updates=no: Don't expunge DELEted and RETRed messages
unless QUIT is sent.
- auth: Fix crypt() segfault with glibc-2.28+
- imap: Running UID FILTER script with errors assert-crashes
- dsync, pop3-migration: POP3 UIDLs weren't added to
dovecot.index.cache while mails were saved.
- dict clients may have been using 100% CPU while waiting for dict
server to finish commands.
- doveadm user: Fixed user listing via HTTP API
- All levels of Cassandra log messages were logged as Dovecot errors.
- http/smtp client may have crashed after SSL handshake
- Lua auth converted strings that looked like numbers into numbers.
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2.3.3:
* doveconf hides more secrets now in the default output.
* ssl_dh setting is no longer enforced at startup. If it's not set and
non-ECC DH key exchange happens, error is logged and client is
disconnected.
+ Added log_debug=<filter> setting.
+ Added log_core_filter=<log filter> setting.
+ quota-clone: Write to dict asynchronously
+ --enable-hardening attempts to use retpoline Spectre 2 mitigations
+ lmtp proxy: Support source_ip passdb extra field.
+ doveadm stats dump: Support more fields and output stddev by default.
+ push-notification: Add SSL support for OX backend.
- NUL bytes in mail headers can cause truncated replies when fetched.
- director: Conflicting host up/down state changes may in some rare
situations ended up in a loop of two directors constantly overwriting
each others' changes.
- director: Fix hang/crash when multiple doveadm commands are being
handled concurrently.
- director: Fix assert-crash if doveadm disconnects too early
- virtual plugin: Some searches used 100% CPU for many seconds
- dsync assert-crashed with acl plugin in some situations.
- mail_attachment_detection_options=add-flags-on-save assert-crashed
with some specific Sieve scripts.
- Mail snippet generation crashed with mails containing invalid
Content-Type:multipart header.
- Log prefix ordering was different for some log lines.
- quota: With noenforcing option current quota usage wasn't updated.
- auth: Kerberos authentication against Samba assert-crashed.
- stats clients were unnecessarily chatty with the stats server.
- imapc: Fixed various assert-crashes when reconnecting to server.
- lmtp, submission: Fix potential crash if client disconnects while
handling a command.
- quota: Fixed compiling with glibc-2.26 / support libtirpc.
- fts-solr: Empty search values resulted in 400 Bad Request errors
- fts-solr: default_ns parameter couldn't be used
- submission server crashed if relay server returned over 7 lines in
a reply (e.g. to EHLO)
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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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packages, remove respective options.mk parts.
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