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dovecot23-2.3.21-2.3 RPM for x86_64

From OpenSuSE Tumbleweed for x86_64

Name: dovecot23 Distribution: openSUSE Tumbleweed
Version: 2.3.21 Vendor: openSUSE
Release: 2.3 Build date: Mon Nov 6 16:58:22 2023
Group: Productivity/Networking/Email/Servers Build host: reproducible
Size: 16165853 Source RPM: dovecot23-2.3.21-2.3.src.rpm
Summary: IMAP and POP3 Server Written Primarily with Security in Mind
Dovecot is an IMAP and POP3 server for Linux and UNIX-like systems,
written primarily with security in mind. Although it is written in C,
it uses several coding techniques to avoid most of the common pitfalls.

Dovecot can work with standard mbox and maildir formats and is fully
compatible with UW-IMAP and Courier IMAP servers as well as mail
clients accessing the mailboxes directly.




BSD-3-Clause AND LGPL-2.1-or-later AND MIT


* Mon Nov 06 2023 Dominique Leuenberger <>
  -  Fix build with RPM 4.19: unnumbered patches are no longer
* Fri Sep 15 2023 Arjen de Korte <>
  - update to 2.3.21 and pigeonhole 0.5.21
    Dovecot 2.3.21
    * lib-oauth2: Allow JWT tokens to be validated with missing typ field.
      The typ field is left out by some key issuers to conserve space,
      notably kubernetes. Now missing typ is tolerated, but if present, it
      still must be "jwt".
    + auth: Auth passdb and userdb reply can contain "event_<name>=value"
      which will be added to login event and mail user event respectively.
    + lib-master: Set process title during various initialization stages to
      clearly describe what the process is waiting on.
    + lib-storage: The mail_temp_scan_interval is now fuzzed incrementing it
      by 0..30% based on username's hash to reduce the chance of load spikes.
    + lib-storage: The temp file scan has been moved from the open of the
      mailbox to the close, to reduce the latency perceived by users.
    + stats: If metric has fields specified, all these fields are
      exported as counters to prometheus exposition.
    - *-login: Processes might have crashed when a SSL connection disconnects
    - acl: When plugin was loaded \HasChildren and \HasNoChildren flags
      were calculated incorrectly for mailboxes containing '*' and '%'
      in their names.
    - auth: Crash occured if a connection to PostgreSQL database server
      failed during startup.
    - auth: Logins with invalid passwords (e.g. unknown scheme) in passdb
      were failing with "password mismatch" instead of "internal error".
    - auth: XOAUTH2 and OAUTHBEARER mechanisms were not giving out protocol
      specific error message on all errors. This especially broke OIDC
    - dbox: When last_temp_file_scan header wasn't set (especially after
      dsync migration), the next mailbox open always triggers the temp file
      scan. This could have caused a load spike after migrations. Fixed by
      using the mailbox directory's atime when the header isn't set, which
      usually moves the scan time into the future.
    - dict-redis: A crash would occur on transaction rollback.
    - dsync: Infinite loop causing out of memory would occur when handling
      mailbox deletion from remote end and hierarchy separators would differ.
    - dsync: Incremental dsync failed for folder names ending with '%',
      unless BROKENCHAR was set. Also folder names with '%' elsewhere in
      them caused each incremental dsync to unnecessarily rename the folder
      to a temporary name and back. v2.3.19 regression.
    - imap-hibernate: If an IMAP client unhibernation timed out with
      "(version received)", the unhibernation could still have successfully
      finished later on and continued working normally. This was rather
      confusing, because imap-hibernate already logged that the client got
      disconnected. Avoid this by forcing the connection to shutdown on
      unhibernation timeout.
    - imapc: Crashed when a folder mapped through the virtual plugin
      disappears from the storage.
    - imapc: EXPUNGE, EXISTS or FETCH replies from a server for a previously
      selected mailbox could have been processed as if they belonged to the
      new mailbox currently being selected. This could have caused warnings.
    - lib-http: Dovecot HTTP server (doveadm, stats/openmetrics) may have
      disconnected HTTP clients before the response is fully sent. This
      happened only on busy servers where kernel's socket buffers were
      rather full.
    - lib-http: Fixed a potential crash on http-server if a client
      disconnected early. v2.3.18 regression.
    - lib-index: Index file corruption could have caused a crash. Fixes:
      Panic: file mail-transaction-log-view.c: line 165 (mail_transaction_log_view_set):
      assertion failed: (min_file_seq <= max_file_seq).
    - lib-index: Purging an existing >1GB cache file can crash. Now cache
      files still above 1GB after purging are removed. Fixes:
      Panic: file mail-index-util.c: line 10 (mail_index_uint32_to_offset):
      assertion failed: (offset < 0x40000000)
    - lib-lua: A HTTP client could not resolve DNS names in mail processes,
      because it expected "the dns-client" socket to exist in the current
    - lib-oauth2: Dovecot would send client_id and client_secret as POST
      parameters to the introspection server. These need to be optionally in
      Basic auth instead.
    - lib-oauth2: JWT aud validation was not performed if aud was missing
      from a token, but was configured on Dovecot.
    - lib-oauth2: JWT key type check was too strict.
    - lib-oauth2: JWT token audience was not validated against client_id as
      required by the specification.
    - lib-ssl-iostream: Using the ssl_require_crl=yes setting may have caused
      CRL check failures for outgoing SSL/TLS connections, although it was
      supposed to affect checking CRLs only for client-side SSL
      certificates. v2.3.17 regression.
    - lib-sql: MySQL driver leaked memory when connection failed.
    - lib-storage: Various fixes when running into out of disk space.
    - master: Service idle_kill setting didn't work properly on busy
      servers. It was very unlikely that any process was idling long enough
      to become killed. Also the idle_kill handling code was using quite a
      lot of CPU on the master process when there were a lot of processes
      (e.g. imap). The new behavior is to track the lowest number of idling
      processes every idle_kill time interval and then kill that many idling
    - mdbox: Temp file scan was done for always empty directories.
    - mdbox: The fdatasync() call was done in wrong parent directory when
      writing mails. Also on a failure it crashed instead of logging an error.
    - notify_status: The plugin crashes if any user initialization fails.
    - pop3: Sending command with the ':' character caused an assert-crash.
      v2.3.18 regression. Fixes: Panic: event_reason_code_prefix(): name has ':'
    - stats: Fix panic when a nonexistent event exporter was referenced while
      adding a new metric dynamically via doveadm stats add. This produces
      a proper error now.
    - stats: If process exported a lot of events and then exited, some of
      the last events may have become lost.
    - stats: Invalid Prometheus label names were created with specific
      histogram group_by configurations. Prometheus rejected these labels.
    - welcome: The plugin didn't execute in some situations that created
      INBOX but didn't open it, e.g. if GETMETADATA was used before the
      INBOX was opened.
    Pigeonhole v0.5.21
    - sieve: Using the deleteheader action on a message with a broken/invalid
      header can cause the Sieve interpreter to crash with an assert panic.
      This can happen e.g. when the message is missing the empty EOH line
      between the headers and the body of the message. Fixes:
      Panic: file edit-mail.c: line 820 (edit_mail_headers_parse):
      assertion failed: (body_offset > 0).
    - sieve: Pigeonhole added an extra Message-ID header during mail
      forwarding when the existing one was invalid. Now it adds the
      Message-ID only if it is entirely missing. Existing Message-ID(s) are
      left unchanged.
* Mon Mar 27 2023 Martin Liška <>
  - Add upstream fix-strict-aliasing.patch that addresses violation
    of strict aliasing.
* Thu Mar 23 2023 Martin Liška <>
  - Enable LTO now as it works now (boo#1156301).
* Sun Feb 05 2023 Arjen de Korte <>
  - Add patch to fix building with OpenSSL-3 (boo#1207958)
    + fix-build-with-openssl-3.patch
* Thu Dec 22 2022 Michael Ströder <>
  - removed obsolete dovecot-2.3.19-fix-doveadm-sync-special-folders.patch
  - update to 2.3.20 and pigeonhole 0.5.20
    + Add dsync_features=no-header-hashes. When this setting is enabled and
      one dsync side doesn't support mail GUIDs (i.e. imapc), there is no
      fallback to using header hashes. Instead, dsync assumes that all mails
      with identical IMAP UIDs contains the same mail contents. This can
      significantly improve dsync performance with some IMAP servers that
      don't support caching Date/Message-ID headers.
    + lua: HTTP client has more settings now, see
    + replicator: "doveadm replicator status" command now outputs when the
      next sync is expected for the user.
    - LAYOUT=index: duplicate GUIDs were not cleaned out. Also the list
      recovery was not optimal.
    - auth: Assert crash would occur when iterating multiple userdb
    - director: Logging into director using master user with
      auth_master_user_separator character redirected user to a wrong
      backend, unless master_user_separator setting was also set to the same
      value. Merged these into auth_master_user_separator.
    - dsync: Couldn't always fix folder GUID conflicts automatically with
      Maildir format. This resulted in replication repeatedly failing
      with "Remote lost mailbox GUID".
    - dsync: Failed to migrate INBOX when using namespace prefix=INBOX/,
      resulting in "Remote lost mailbox GUID" errors.
    - dsync: INBOX was created too early with namespace prefix=INBOX/,
      resulting a GUID conflict. This may have been resolved automatically,
      but not always.
    - dsync: v2.3.18 regression: Wrong imapc password with dsync caused
      Panic: file lib-event.c: line 506 (event_pop_global):
      assertion failed: (event == current_global_event)
    - imapc: Requesting STATUS for a mailbox with imapc and INDEXPVT
      configured did not return correct (private) unseen counts.
    - lib-dict: Process would crash when committing data to redis without
      dict proxy.
    - lib-mail: Corrupted cached BODYSTRUCTURE caused panic during FETCH.
      Fixes: Panic: file message-part-data.c: line 579 (message_part_is_attachment):
      assertion failed: (data != NULL). v2.3.13 regression.
    - lib-storage: mail_attribute_dict with dict-sql failed when it tried to
      lookup empty dict keys.
    - lib: ioloop-kqueue was missing include breaking some BSD builds.
    - lua-http: Dovecot Lua HTTP client could not resolve DNS names in mail
      processes, because it expected "dns-client" socket to exist in the
      current directory.
    - oauth2: Using %{oauth2:name} variables could cause useless
    - pop3: Sending POP3 command with ':' character caused an assert-crash.
      v2.3.18 regression.
    - replicator: Replication queue had various issues, potentially causing
      replication requests to become stuck.
    - stats: Invalid Prometheus label names were created with specific
      histogram group_by configurations. Prometheus rejected these labels.
* Tue Dec 20 2022 Thiago Macieira <>
  - Add suppor for Zstandard (zstd) to the compression (zlib) plugin: zstd has a
    better compression ratio than gzip for the same amount of CPU work, or takes
    less CPU to compress the same. It's also faster to decompress.
  - Add dovecot-2.3.19-fix-doveadm-sync-special-folders.patch:
    Patches from the release-2.3 branch that fix issues importing the INBOX
    folder from a Cyrus IMAP server and dealing with auto-creating folders that
    haven't yet been created
* Tue Jun 14 2022 Michael Ströder <>
  - update to
    * doveadm deduplicate: Non-duplicate mails were deleted. v2.3.19 regression.
    * auth: Crash would occur when iterating multiple backends.
      Fixes: Panic: file userdb-blocking.c: line 125 (userdb_blocking_iter_next): assertion failed: (ctx->conn != NULL)
* Tue May 10 2022 Arjen de Korte <>
  - update to 2.3.19 and pigeonhole 0.5.19
    Dovecot 2.3.19
    + Added mail_user_session_finished event, which is emitted when the mail
      user session is finished (e.g. imap, pop3, lmtp). It also includes
      fields with some process statistics information.
      See for more
    + Added process_shutdown_filter setting. When an event matches the filter,
      the process will be shutdown after the current connection(s) have
      finished. This is intended to reduce memory usage of long-running imap
      processes that keep a lot of memory allocated instead of freeing it to
      the OS.
    + auth: Add cache hit indicator to auth passdb/userdb finished events.
      See for more
    + doveadm deduplicate: Performance is improved significantly.
    + imapc: COPY commands were sent one mail at a time to the remote IMAP
      server. Now the copying is buffered, so multiple mails can be copied
      with a single COPY command.
    + lib-lua: Add a Lua interface to Dovecot's HTTP client library. See for more information.
    - auth: Cache lookup would use incorrect cache key after username change.
    - auth: Improve handling unexpected LDAP connection errors/hangs.
      Try to fix up these cases by reconnecting to the LDAP server and
      aborting LDAP requests earlier.
    - auth: Process crashed if userdb iteration was attempted while auth-workers
      were already full handling auth requests.
    - auth: db-oauth2: Using %{oauth2:name} variables caused unnecessary
      introspection requests.
    - dict: Timeouts may have been leaked at deinit.
    - director: Ring may have become unstable if a backend's tag was changed.
      It could also have caused director process to crash.
    - doveadm kick: Numeric parameter was treated as IP address.
    - doveadm: Proxying can panic when flushing print output. Fixes
      Panic: file ioloop.c: line 865 (io_loop_destroy): assertion failed:
      (ioloop == current_ioloop).
    - doveadm sync: BROKENCHAR was wrongly changed to '_' character when
      migrating mailboxes. This was set by default to %, so any mailbox
      names containing % characters were modified to "_25".
    - imapc: Copying or moving mails with doveadm to an imapc mailbox could
      have produced "Error: Syncing mailbox '[...]' failed" Errors. The
      operation itself succeeded but attempting to sync the destination
      mailbox failed.
    - imapc: Prevent index log synchronization errors when two or more imapc
      sessions are adding messages to the same mailbox index files, i.e.
      INDEX=MEMORY is not used.
    - indexer: Process was slowly leaking memory for each indexing request.
    - lib-fts: fts header filters caused binary content to be sent to the
      indexer with non-default configuration.
    - doveadm-server: Process could hang in some situations when printing
      output to TCP client, e.g. when printing doveadm sync state.
    - lib-index: dovecot.index.log files were often read and parsed entirely,
      rather than only the parts that were actually necessary. This mainly
      increased CPU usage.
    - lmtp-proxy: Session ID forwarding would cause same session IDs being
      used when delivering same mail to multiple backends.
    - log: Log prefix update may have been lost if log process was busy.
      This could have caused log prefixes to be empty or in some cases
      reused between sessions, i.e. log lines could have been logged for the
      wrong user/session.
    - mail_crypt: Plugin crashes if it's loaded only for some users. Fixes
      Panic: Module context mail_crypt_user_module missing.
    - mail_crypt: When LMTP was delivering mails to both recipients with mail
      encryption enabled and not enabled, the non-encrypted recipients may
      have gotten mails encrypted anyway. This happened when the first
      recipient was encrypted (mail_crypt_save_version=2) and the 2nd
      recipient was not encrypted (mail_crypt_save_version=0).
    - pop3: Session would crash if empty line was sent.
    - stats: HTTP server leaked memory.
    - submission-login: Long credentials, such as OAUTH2 tokens, were refused
      during SASL interactive due to submission server applying line length
    - submission-login: When proxying to remote host, authentication was not
      using interactive SASL when logging in using long credentials such as
      OAUTH2 tokens. This caused authentication to fail due to line length
      constraints in SMTP protocol.
    - submission: Terminating the client connection with QUIT command after
      mail transaction is started with MAIL command and before it is
      finished with DATA/BDAT can cause a segfault crash.
    - virtual: doveadm search queries with mailbox-guid as the only parameter
      crashes: Panic: file virtual-search.c: line 77 (virtual_search_get_records):
      assertion failed: (result != 0)
    Pigeonhole v0.5.19
    * This release is done to maintain parity with dovecot 2.3.19 release,
      so it does not contain any news-worthy changes.
* Thu Feb 03 2022 Michael Ströder <>
  - update to 2.3.18 and pigeonhole to 0.5.18
    * removed obsolete mail-cache-bigendian.diff
    Dovecot 2.3.18
    * Removed mail_cache_lookup_finished event. This event wasn't especially
      useful, but it increased CPU usage significantly.
    * fts: Don't index inline base64 encoded content in FTS indexes using
      the generic tokenizer. This reduces the FTS index sizes by removing
      input that is very unlikely to be searched for. See for
      details on how base64 is detected. Only applies when using libfts.
    * lmtp: Session IDs are now preserved through proxied connections, so
      LMTP sessions can be tracked. This slightly changes the LMTP session
      ID format by appending ":Tn" (transaction), ":Pn" (proxy connection)
      and ":Rn" (recipient) counters after the session ID prefix.
    + Events now have "reason_code" field, which can provide a list of
      reasons why the event is happening. See
    + New events are added. See
    + fts: Added fts_header_excludes and fts_header_includes settings to
      specify which headers to index. See
      for configuration details.
    + fts: Initialize the textcat language detection library only once per
      process. This can reduce CPU usage if fts_languages setting has multiple
      languages listed and service indexer-worker { service_count } isn't 1.
      Only applies when using libfts.
    + lib-storage: Reduced CPU usage significantly for some operations that
      accessed lots of emails (e.g. fetching all flags in a folder, SORT, ...)
    + lib: DOVECOT_PREREQ() - Add micro version which enables compiling
      external plugins against different versions of Dovecot.
    + lmtp: Added new lmtp_verbose_replies setting that makes errors sent to
      the LMTP client much more verbose with details about why exactly
      backend proxy connections or commands are failing.
    + submission: Support implicit SASL EXTERNAL with
      submission_client_workarounds=implicit-auth-external. This allows
      automatically logging in when SSL client certificate is present.
    - *-login: Statistics were disabled if stats process connection was lost.
    - auth: Authentication master user login fails with SCRAM-* SASL mechanisms.
    - auth: With auth_cache_verify_password_with_worker=yes, passdb extra
      fields in the auth cache got lost.
    - doveadm: Fixed crash if zlib_save_level setting was specified,
      but zlib_save was unset. v2.3.15 regression.
    - doveadm: Proxying can panic when flushing print output. v2.3.17
      regression. Fixes:
      Panic: file ioloop.c: line 865 (io_loop_destroy): assertion failed:
      (ioloop == current_ioloop)
    - doveadm: stats add --group-by parameter didn't work.
    - fts: Using email-address fts tokenizer could result in excessive memory
      usage with garbage email input. This could cause the indexer-worker
      processes to fail due to reaching the VSZ memory size limit.
      Only applies when using libfts.
    - imap: A SEARCH command timing out while fts returns indexes may timeout
      returning "NO [SERVERBUG]", while it should return "NO [INUSE]" instead.
    - imap: LIST-EXTENDED doesn't return STATUS for all folders. Sending
      LIST .. RETURN (SUBSCRIBED STATUS (...)) did not return STATUS for
      folders that are not subscribed when they have a child folder that is
      subscribed as mandated by IMAP RFCs.
    - imapc: Mailbox vsize calculation crashed with
      Panic: file index-mailbox-size.c: line 344 (index_mailbox_vsize_hdr_add_missing):
      assertion failed: (mails_left > 0)
    - indexer: If indexer-worker crashes, the request it was processing gets
      stuck in the indexer process. This stops indexing for the folder until
      indexer process is restarted. v2.3.14 regression.
    - indexer: Process was slowly leaking memory for each indexing request.
    - lib-event: Unnamed events were wrongly filtered out for event/metric
      filters like "event=abc OR something_independent_of_event_name".
    - lib-index: 64-bit big endian CPUs handle last_used field in
      dovecot.index.cache wrong.
    - lib-ssl-iostream: Fix buggy OpenSSL error handling without assert-crashing.
      If there is no error available, log it as an error instead of crashing.
      The previous fix for this in v2.3.11 was incomplete. Fixes
      Panic: file istream-openssl.c: line 51 (i_stream_ssl_read_real):
      assertion failed: (errno != 0)
    - lmtp: Out-of-memory issues can happen when proxying large messages to
      LMTP backend servers that accept the message data too slow.
    - master: HAProxy header parsing has read buffer overflow if provided
      header size is invalid. This happens only if inet_listener
      { haproxy=yes } is configured and only if the remote IP address is in
    - old_stats: Plugin kept increasing memory usage, which became
      noticeable with long-running imap sessions.
    - stats: Dynamically adding same metric multiple times causes multiple stats.
    - submission-login: Authentication does not accept OAUTH2 token (or
      other very long credentials) because it considers the line to be too long.
    - submission-login: Process can crash if HELO is pipelined with an
      invalid domain.
    - submission-proxy: Don't use SASL-IR if it would make the AUTH command
      line longer than 512 bytes.
    - submission: Service would crash if relay server authentication failed.
    - virtual: FTS search in a virtual folder could crash if there are
      duplicate mailbox GUIDs. This mainly happened when user had both INBOX
      and INBOX/INBOX folders and the namespace prefix was INBOX/. Fixes
      Panic: file hash.c: line 252 (hash_table_insert_node):
      assertion failed: (opcode == HASH_TABLE_OP_UPDATE)
    - virtual: If mailbox opening fails, the backend mailbox is leaked and
      process crashes when client disconnects. Fixes
      Panic: file mail-user.c: line 232 (mail_user_deinit):
      assertion failed: ((*user)->refcount == 1)
    - virtual: Searching headers in virtual folders didn't always use
      full-text search indexes, if fts_enforced=no or body.
    Pigeonhole v0.5.18
    - duplicate: Users without a home directory can crash with Sieve when
      using duplicate database. v2.3.17 regression.
    - imapsieve: When mail was expunged when processing imapsieve events, a
      crash could occur. Fixes Panic: file mail-index-map.c:
      line 558 (mail_index_map_lookup_seq_range): assertion failed: (first_uid > 0)
    - managesieve-login: Proxy didn't support forwarding the forward_* passdb fields.
    - redirect: Sieve would crash if redirect after keep-equivalent action failed.
    - sieve: Interpreter crashes when the Sieve index extension is used with
      index zero.
    - vnd.dovecot.filter: Envelope sender string may become corrupted when
      Sieve scripts are using vnd.dovecot.filter. This could end up
      corrupting mbox's From line and return wrong envelope sender string in
* Wed Feb 02 2022 Dominique Leuenberger <>
  - Fix dovecot-2.3.0-dont_use_etc_ssl_certs.patch: Align the
    certificate path/filenames to /etc/ssl/private/*.crt, which
    happens to match what the patch also does for
  - Rebase dovecot-2.3.0-better_ssl_defaults.patch
* Thu Dec 16 2021 Fabian Vogt <>
  - Update dovecot-2.3.0-dont_use_etc_ssl_certs.patch to also adjust
    the path in the 10-ssl.conf example (boo#1193758)
  - Rebase dovecot-2.3.0-better_ssl_defaults.patch
* Tue Dec 07 2021 Michael Ströder <>
  - update to and pigeonhole to
  - rebased dovecot-2.3.0-better_ssl_defaults.patch
    - dsync: Add back accidentically removed parameters.
    - lib-ssl-iostream: Fix assert-crash when OpenSSL returned syscall error
      without errno.
    - master: Dovecot failed to start if ssl_ca was too large.
    Dovecot 2.3.17
    * Dovecot now logs a warning if time seems to jump forward at least
      100 milliseconds.
    * dict: Lines logged by the dict process now contain the dict name as
      the prefix.
    * lib-index: mail_cache_fields, mail_always_cache_fields and
      mail_never_cache_fields now verifies that the listed header names are
      valid. Especially the UTF8 "–" character has sometimes been wrongly
      used instead of the ASCII "-".
    + *-login: Added login_proxy_rawlog_dir setting to capture
      rawlogs between proxy and backend.
    + dict: The server process now keeps the last 10 idle dict backends
      cached for maximum of 30 seconds. Practically this acts as a
      connection pool for dict-redis and dict-ldap. Note that this doesn't
      affect dict-sql, because it already had its own internal cache.
    + doveadm: New stats add/remove commands added to support changing the
      metrics configuration on runtime.
    + lazy_expunge: Added lazy_expunge_exclude settings to disable
      lazy_expunge for specific folders. \Special-use flags can be used as
      folder names.
    + lib-lua: Added a new helper function dovecot.restrict_global_variables()
      to disable or enable defining new global variables.
    - LAYOUT=index List index rebuild was missing.
    - LAYOUT=index: Duplicate GUIDs were not detected.
    - acl: When using acl_ignore_namespace Dovecot attempted to access or
      create dovecot-acl-list even when the namespace should have been
      ignored. For virtual namespaces this could have yielded errors about
      "Read-only file system" or "Permission denied".
    - auth: Setting the "master" passdb field to empty value would
      cause proxying to fail with an authentication error.
      Now an empty "master" field is ignored.
    - doveadm-server: Duplicate error lines were sent for failed commands.
      This didn't normally cause visible problems, except when using
      wildcards in usernames or -A parameter to go through multiple users.
    - doveadm-server: Logs written by doveadm-server were often missing log
      prefixes, especially mail_log_prefix for mail commands. Logs sent to
      doveadm TCP client were also missing log prefixes.
    - doveadm: v2.3 regression: batch command always crashes.
    - doveadm: v2.3.11 regression: Commands failed if ssl_cert or
      ssl_key files weren't readable by the user running doveadm, even
      though doveadm didn't actually use these settings
    - imap-hibernate: Process may crash at deinit:
      Panic: file ioloop.c: line 928 (io_loop_destroy): assertion failed:
      (ioloop->cur_ctx == NULL).
    - imap: Using imap_fetch_failure=no-after can cause assert-crash
      with some IMAP commands if reading the mail fails (e.g. wrong cached
      mail size). Fixes:
      Panic: file index-mail-headers.c: line 198 (index_mail_parse_header_init):
      assertion failed: (!mail->data.header_parser_initialized)
    - imap: v2.3.10 regression: When using INDEXPVT to enable private
      \Seen flags (for shared or public namespaces) the STORE command did
      not send untagged replies for the \Seen flag changes.
    - imap: v2.3.15 regression: If PREVIEW/SNIPPET is not the final FETCH
      option in the command, the IMAP FETCH response is broken.
    - imap: v2.3.15 regression: MOVE command leaks mailbox if it can't be
      opened and crashes at deinit:
      Panic: file mail-user.c: line 229 (mail_user_deinit): assertion failed:
      ((*user)->refcount == 1).
    - imapc: Copying nonexistent mail via imapc could have crashed. Fixes:
      Panic: file mail-storage.c: line 2385 (mailbox_transaction_commit_get_changes):
      assertion failed: (ret < 0 || seq_range_count(&changes_r->saved_uids) == save_count ||
      array_count(&changes_r->saved_uids) == 0).
    - indexer: v2.3.15 regression: Process crashes if indexer-client
      disconnects while it's waiting for command reply. This happened for
      example if IMAP SEARCH triggered long fts indexing and the IMAP
      client disconnected while waiting for the reply.
    - indexer: v2.3.15 regression: Process may have crashed in some situations.
    - indexer: v2.3.15 regression: indexer-worker processes may not have
      reached the process_limit in some situations, possibly even using just
      one indexer-worker process even though there were many indexing
      requests queued.
    - lib-compression: Reading lz4 compressed mdbox mails may crash. Fixes:
      Panic: file istream.c: line 345 (i_stream_read_memarea):
      assertion failed: (!stream->blocking).
    - lib-compression: bench-compress crashes due to xz being read-only.
    - lib-lua: Fix linking libdict_lua for non-GNU linkers when Lua support
      is disabled.
    - lib-mail: There was no limit on how large an email header name could be.
      Processable header names are now limited to 1000 bytes.
    - lib-oauth2: Dovecot disallowed JWT tokens if their validity time was
      older than token creation time (nbf < iat).
    - lib-storage: Reduce memory footprint of certain storage operations.
    - lib-storage: When listing mailboxes with storage name escape
      characters (^ or .) as part of the mailbox name, the listing could
      show corrupted mailbox names. Due to an issue in handling escaped
      parent folders, the listing of other mailbox names would become
      corrupted by prepending parts of the previously listed mailboxes
      parent folder as prefix to the actual mailbox names. The corruption
      can occur when using LAYOUT=INDEX and maildir or obox, or when using
      the listescape plugin.
    - mail-crypt: Fix "-O" argument for "doveadm mailbox cryptokey password"
      command to be a boolean, and not expect a string.
    - submission-login: Add support for not authenticating to next hop in
      submission proxying.
    - submission-login: EHLO was not sent again after XCLIENT when doing
      submission proxying.
    - virtual: Mailboxes do not correctly detect underlying mailboxes
      getting re-created even though they have a different UIDVALIDITY or
    Pigeonhole v0.5.17
    - duplicate: The Sieve duplicate test is prone to false negatives when
      the user receives many e-mails concurrently, meaning that duplicate
      deliveries can still occur.
    - fileinto: v2.3.16 regression: Sieve delivery crashes if mail is
      delivered to non-existing and existing folder.
    - imap-filter-sieve: v2.3.15 regression: The CPU limits on Sieve
      execution are too easily exceeded in IMAP context (the IMAPSieve and
      FILTER=SIEVE capabilities). Changed the default to unlimited CPU time
      for IMAP context, since similar excessive resource usage can be caused
      by other means as well. The CPU limits on Sieve scripts executed at
      LDA/LMTP delivery are still enforced by default.
    - redirect:  The Sieve redirect action has protections against users
      triggering mail loops. Unfortunately, the detection of a redirect mail
      loop sometimes causes the message to get lost if no other Sieve action
      is applied that delivers the message somewhere else.
    - redirect: v2.3.16 regression: With certain Sieve scripts if redirect
      fails due to temporary failure, the lmtp process may crash after the
      delivery. Fixes:
      Panic: file mail-user.c: line 229 (mail_user_deinit):
      assertion failed: ((*user)->refcount == 1).
* Tue Aug 10 2021 Michael Ströder <>
  - added back-port fix mail-cache-bigendian.diff
  - update to 2.3.16 and pigeonhole to 0.5.16:
    Dovecot 2.3.16
    * Any unexpected exit() will now result in a core dump. This can
      especially help notice problems when a Lua script causes exit(0).
    * auth-worker process is now restarted when the number of auth
      requests reaches service auth-worker { service_count }. The default
      is still unlimited.
    + Event improvements: Added data_stack_grow event and http-client
      category. See
    + oauth2: Support RFC 7628 openid-configuration element. This allows
      clients to support OAUTH2 for any server, not just a few hardcoded
      servers like they do now. See openid_configuration_url setting in
    + mysql: Single statements are no longer enclosed with BEGIN/COMMIT.
    + dovecot-sysreport --core supports multiple core files now and does
      not require specifying the binary path.
    + imapc: When imap_acl plugin is loaded and imapc_features=acl is used,
      IMAP ACL commands are proxied to the remote server. See
    + dict-sql now supports the "UPSERT" syntax for SQLite and PostgreSQL.
    + imap: If IMAP client disconnects during a COPY command, the copying
      is aborted, and changes are reverted. This may help to avoid many
      email duplicates if client disconnects during COPY and retries it
      after reconnecting.
    - master process was using 100% CPU if service attempted to create more
      processes due to process_min_avail, but process_limit was already
      reached. v2.3.15 regression.
    - Using attachment detection flags wrongly logged unnecessary "Failed
      to add attachment keywords" errors. v2.3.13 regression.
    - IMAP QRESYNC: Expunging UID 1 mail resulted in broken VANISHED
      response, which could have confused IMAP clients. v2.3.13 regression.
    - imap: STORE didn't send untagged replies for \Seen changes for
      (shared) mailboxes using INDEXPVT. v2.3.10 regression.
    - rawlog_dir setting would not log input that was pipelined after
      authentication command.
    - Fixed potential infinite looping with autoexpunging.
    - Log event exporter: Truncate long fields to 1000 bytes
    - LAYOUT=index: ACL inheritance didn't work when creating mailboxes
    - Event filters: Unquoted '?' wildcard caused a crash at startup
    - fs-metawrap: Fix to handling zero sized files
    - imap-hibernate: Fixed potential crash at deinit.
    - acl: dovecot-acl-list files were written for acl_ignore_namespaces
    - program-client (used by Sieve extprograms, director_flush_socket)
      may have missed status response from UNIX and network sockets,
      resulting in unexpected failures.
    Pigeonhole v0.5.16
    * .dovecot.sieve.log file now includes year in the header.
    * Change Sieve script result execution to delay definitive action
      execution to the end of a successful Sieve script execution session.
      This is part of an effort to solve problems with the Sieve duplicate
      test. As a side-effect, some rare temporary-error cases yield
      different results, in which partial failure is more likely.
* Tue Jun 22 2021 Marcus Rueckert <>
  - use lua 5.1 for sle12
* Mon Jun 21 2021 Michael Ströder <>
  - update to 2.3.15 and pigeonhole to 0.5.15:
    * security fixes for CVE-2021-29157, CVE-2021-33515, and CVE-2020-28200
    * rebased patch dovecot-2.3.0-better_ssl_defaults.patch
    * removed obsolete back-port patches
      allow-tls1.3-only.patch and openssl-cnf-default_bits-2048.patch
    * require lua53-devel for build
    Dovecot 2.3.15
    * CVE-2021-29157: Dovecot does not correctly escape kid and azp fields in
      JWT tokens. This may be used to supply attacker controlled keys to
      validate tokens, if attacker has local access.
    * CVE-2021-33515: On-path attacker could have injected plaintext commands
      before STARTTLS negotiation that would be executed after STARTTLS
      finished with the client.
    * Disconnection log messages are now more standardized across services.
      They also always now start with "Disconnected" prefix.
    * Dovecot now depends on libsystemd for systemd integration.
    * Removed support for Lua 5.2. Use version 5.1 or 5.3 instead.
    * config: Some settings are now marked as "hidden". It's discouraged to
      change these settings. They will no longer be visible in doveconf
      output, except if they have been changed or if doveconf -s parameter
      is used. See for details.
    * imap-compress: Compression level is now algorithm specific.
    * indexer-worker: Convert "Indexed" info logs to an event named
      "indexer_worker_indexing_finished". See
    + Add TSLv1.3 support to min_protocols.
    + Allow configuring ssl_cipher_suites. (for TLSv1.3+)
    + acl: Add acl_ignore_namespace setting which allows to entirely ignore
      ACLs for the listed namespaces.
    + imap: Support official RFC8970 preview/snippet syntax. Old methods of
      retrieving preview information via IMAP commands ("SNIPPET and PREVIEW
      with explicit algorithm selection") have been deprecated.
    + imapc: Support INDEXPVT for imapc storage to enable private
      message flags for cluster wide shared mailboxes.
    + lib-storage: Add new events: mail_opened, mail_expunge_requested,
      mail_expunged, mail_cache_lookup_finished. See
    + zlib, imap-compression, fs-compress: Support compression levels that
      the algorithm supports. Before, we would allow hardcoded value between
      1 to 9 and would default to 6. Now we allow using per-algorithm value
      range and default to whatever default the algorithm specifies.
    - *-login: Commands pipelined together with and just after the authenticate
      command cause these commands to be executed twice. This applies to all
      protocols that involve user login, which currently comprises of imap,
      pop3, submisision and managesieve.
    - *-login: Processes are supposed to disconnect the oldest non-logged in
      connection when process_limit was reached. This didn't actually happen
      with the default "high-security mode" (with service_count=1) where each
      connection is handled by a separate process.
    - *-login: When login process reaches client/process limits, oldest
      client connections are disconnected. If one of these was still doing
      anvil lookup, this caused a crash. This could happen only if the login
      process limits were very low or if the server was overloaded.
    - Fixed building with link time optimizations (-flto).
    - auth: Userdb iteration with passwd driver does not always return all
      users with some nss drivers.
    - dsync: Shared INBOX not synced when "mail_shared_explicit_inbox" was
      disabled. If a user has a shared mailbox which is another user's INBOX,
      dsync didn't include the mailbox in syncing unless explicit naming is
      enabled with "mail_shared_explicit_inbox" set to "yes".
    - dsync: Shared namespaces were not synced with "-n" flag.
    - dsync: Syncing shared INBOX failed if mail_attribute_dict was not set.
      If a user has a shared mailbox that is another user's INBOX, dsync
      failed to export the mailbox if mail attributes are disabled.
    - fts-solr, fts-tika: Using both Solr FTS and Tika may have caused HTTP
      requests to assert-crash: Panic: file http-client-request.c: line 1232
      (http_client_request_send_more): assertion failed: (req->payload_input != NULL)
    - fts-tika: 5xx errors returned by Tika server as indexing failures.
      However, Tika can return 5xx for some attachments every time.
      So the 5xx error should be retried once, but treated as success if it
      happens on the retry as well. v2.3 regression.
    - fts-tika: v2.3.11 regression: Indexing messages with fts-tika may have
      resulted in Panic: file message-parser.c: line 802 (message_parser_deinit_from_parts):
      assertion failed: (ctx->nested_parts_count == 0 || i_stream_have_bytes_left(ctx->input))
    - imap: SETMETADATA could not be used to unset metadata values.
      Instead NIL was handled as a "NIL" string. v2.3.14 regression.
    - imap: IMAP BINARY FETCH crashes at least on empty base64 body:
      Panic: file index-mail-binary.c: line 358 (blocks_count_lines):
      assertion failed: (block_count == 0 || block_idx+1 == block_count)
    - imap: If IMAP client using the NOTIFY command was disconnected while
      sending FETCH notifications to the client, imap could crash with
      Panic: Trying to close mailbox INBOX with open transactions.
    - imap: Using IMAP COMPRESS extension can cause IMAP connection to hang
      when IMAP commands are >8 kB long.
    - imapc: If remote server sent BYE but didn't immediately disconnect, it
      could cause infinite busy-loop.
    - lib-index: Corrupted cache record size in dovecot.index.cache file
      could have caused a crash (segfault) when accessing it.
    - lib-oauth2: JWT token time validation now works correctly with
      32-bit systems.
    - lib-ssl-iostream: Checking hostnames against an SSL certificate was
    - lib-storage: Corrupted in dovecot.index.cache may have
      resulted in Panic: file imap-bodystructure.c: line 206 (part_write_body):
      assertion failed: (text == ((part->flags & MESSAGE_PART_FLAG_TEXT) != 0))
    - lib-storage: Index rebuilding (e.g. via doveadm force-resync) didn't
      preserve the "hdr-pop3-uidl" header. Because of this, the next pop3
      session could have accessed all of the emails' metadata to read their
      POP3 UIDL (opening dbox files).
    - listescape: When using the listescape plugin and a shared namespace
      the plugin didn't work properly anymore resulting in errors like:
      "Invalid mailbox name: Name must not have '/' character."
    - lmtp: Connection crashes if connection gets disconnected due to
      multiple bad commands and the last bad command is BDAT.
    - lmtp: The Dovecot-specific LMTP parameter XRCPTFORWARD was blindly
      forwarded by LMTP proxy without checking that the backend has support.
      This caused a command parameter error from the backend if it was
      running an older Dovecot release. This could only occur in more complex
      setups where the message was proxied twice; when the proxy generated
      the XRCPTFORWARD parameter itself the problem did not occur, so this
      only happened when it was forwarded.
    - lmtp: The LMTP proxy crashes with a panic when the remote server
      replies with an error while the mail is still being forwarded through
      a DATA/BDAT command.
    - lmtp: Username may have been missing from lmtp log line prefixes when
      it was performing autoexpunging.
    - master: Dovecot would incorrectly fail with haproxy 2.0.14 service
    - master: Systemd service: Dovecot announces readiness for accepting
      connections earlier than it should. The following environment variables
      are now imported automatically and can be omitted from
      import_environment setting: NOTIFY_SOCKET LISTEN_FDS LISTEN_PID.
    - master: service { process_min_avail } was launching processes too
      slowly when master was forking a lot of processes.
    - util: Make the example script POSIX shell compatible.
    Pigeonhole 0.5.15
    * CVE-2020-28200: Sieve interpreter is not protected against abusive
      scripts that claim excessive resource usage. Fixed by limiting the
      user CPU time per single script execution and cumulatively over
      several script runs within a configurable timeout period. Sufficiently
      large CPU time usage is summed in the Sieve script binary and execution
      is blocked when the sum exceeds the limit within that time. The block
      is lifted when the script is updated after the resource usage times out.
    * Disconnection log messages are now more standardized across services.
      They also always now start with "Disconnected" prefix.
    - managesieve: Commands pipelined together with and just after the
      authenticate command cause these commands to be executed twice.
* Fri May 14 2021 Fabian Vogt <>
  - Add patch to fix insecure default openssl.cnf (boo#1184552):
    * openssl-cnf-default_bits-2048.patch
  - Use %autosetup
* Thu Mar 04 2021 Michael Ströder <>
  - update to 2.3.14 and pigeonhole to 0.5.14
    * removed obsolete fix-timeval_cmp_margin-for-32bit-systems.patch
    Dovecot 2.3.14
    * Added new aliases for some variables. Usage of the old ones is possible,
      but discouraged. (These were partially added already to v2.3.13.)
      for more information.
    * Optimize imap/pop3/submission/managesieve proxies to use less CPU at
      the cost of extra memory usage.
    * Remove autocreate, expire, snarf and mail-filter plugins.
    * Remove cydir storage driver.
    * Remove XZ/LZMA write support. Read support will be removed in future release.
    * doveadm -D: Add timestamps to debug output even when LOG_STDERR_TIMESTAMP
      environment variable is not set. Timestamp format is taken from
      log_timestamp setting.
    * If BROKENCHAR or listescape plugin is used, the escaped folder names
      may be slightly different from before in some situations. This is
      unlikely to cause issues, although caching clients may redownload the
    * imapc: It now enables BROKENCHAR=~ by default to escape remote folder
      names if necessary. This also means that if there are any '~'
      characters in the remote folder names, they will be visible as "~7e".
    * imapc: When using local index files folder names were escaped on
      filesystem a bit differently. This affects only if there are folder
      names that actually require escaping, which isn't so common. The old
      style folders will be automatically deleted from filesystem.
    * stats: Update exported metrics to be compliant with OpenMetrics standard.
    + doveadm: Add an optional '-p' parameter to metadata list command. If
      enabled, "/private", and "/shared" metadata prefixes will be prepended
      to the keys in the list output.
    + doveconf: Support environment variables in config files. See
      for more details.
    + indexer-worker: Change indexer to disconnect from indexer-worker
      after each request. This allows service indexer-worker's service_count &
      idle_kill settings to work. These can be used to restart indexer-worker
      processes once in a while to reduce their memory usage.
    - auth: "nodelay" with various authentication mechanisms such as apop
      and digest-md5 crashed AUTH process if authentication failed.
    - auth: Auth lua script generating an error triggered an assertion
      failure: Panic: file db-lua.c: line 630 (auth_lua_call_password_verify):
      assertion failed: (lua_gettop(script->L) == 0).
    - configure: Fix libunwind detection to work on other than x86_64 systems.
    - doveadm-server: Process could crash if logging was done outside command
      handling. For example http-client could have done debug logging
      afterwards, resulting in either segfault or Panic:
      file http-client.c: line 642 (http_client_context_close):
      assertion failed: (cctx->clients_list == NULL).
    - dsync: Folder name escaping with BROKENCHAR didn't work completely
      correctly. This especially caused problems with dsync-migrations using
      imapc where some of the remote folder names may not have been accessible.
    - dsync: doveadm sync + imapc doesn't always sync all mails when doing
      an incremental sync (-1), which could lead to mail loss when it's used
      for migration. This happens only when GUIDs aren't used (i.e.
      imapc without imapc_features=guid-forced).
    - fts-tika: When tika server returns error, some mails cause Panic:
      file message-parser.c: line 802 (message_parser_deinit_from_parts):
      assertion failed: (ctx->nested_parts_count == 0 || i_stream_have_bytes_left(ctx->input))
    - lib-imap: imapc parsing illegal BODYSTRUCTUREs with NILs could have
      resulted in crashes. This exposed that Dovecot was wrongly accepting
      atoms in "nstring" handling. Changed the IMAP parsing to be more
      strict about this now.
    - lib-index: If dovecot.index.cache has corrupted message size, fetching
      BODY/BODYSTRUCTURE may cause assert-crash:
      Panic: file index-mail.c: line 1140 (index_mail_parse_body_finish):
      assertion failed: (mail-> != NULL).
    - lib-index: Minor error handling and race condition fixes related to
      rotating dovecot.index.log. These didn't usually cause problems,
      unless the log files were rotated rapidly.
    - lib-lua: Lua scripts using coroutines or lua libraries using coroutines
      (e.g., cqueues) panicked.
    - Message PREVIEW handled whitespace wrong so first space would get
      eaten from between words.
    - FTS and message PREVIEW (snippet) parsed HTML &entities case-sensitively.
    - lib-mail: When max nested MIME parts were reached, IMAP BODYSTRUCTURE
      was written in a way that may have caused confusion for IMAP clients
      and also Dovecot itself when parsing it. The truncated part is now
      written out using application/octet-stream MIME type.
    - lib-oauth2: HS512 and HS384 JWT token algorithms crash when you try to
      use them: Panic: file hmac.c: line 26 (hmac_init): assertion failed:
      (meth->context_size <= MAC_MAX_CONTEXT_SIZE).
    - event filters: NOT keyword did not have the correct associativity.
      NOT a AND b were getting parsed as NOT (a AND b) instead of
      (NOT a) AND b.
    - Ignore ECONNRESET when closing socket. This avoids logging useless
      errors on systems like FreeBSD.
    - event filters: event filter syntax error may lead to Panic:
      file event-filter.c: line 137 (event_filter_parse): assertion failed:
      (state.output == NULL)
    - lib: timeval_cmp_margin() was broken on 32-bit systems. This could
      potentially have caused HTTP timeouts to be handled incorrectly.
    - log: instance_name wasn't used as syslog ident by the log process.
    - master: After a service reached process_limit and client_limit, it
      could have taken up to 1 second to realize that more client connections
      became available. During this time client connections could have been
      unnecessarily rejected and a warning logged:
      Warning: service(...): process_limit (...) reached, client connections are being dropped
    - stats: Crash would occur when generating openmetrics data for metrics
      using aggregating functions.
    - stats: Event filters comparing against empty strings crash the stats
    Pigeonhole 0.5.14
    * IMAP FILTER command: cmd-filter-sieve - Do not allow NIL as
      script name argument.
* Thu Feb 04 2021 Arjen de Korte <>
  - add BuildRequires openssl-devel >= 1.0.1
  - add fix-timeval_cmp_margin-for-32bit-systems.patch
    Fix timeval_cmp_margin for 32-bit systems
* Mon Jan 04 2021 Arjen de Korte <>
  - update to 2.3.13 and pigeonhole to 0.5.13
    Dovecot 2.3.13
    * CVE-2020-24386: Specially crafted command can cause IMAP hibernate to
      allow logged in user to access other people's emails and filesystem
    * Metric filter and global event filter variable syntax changed to a
      SQL-like format. See
    * auth: Added new aliases for %{variables}. Usage of the old ones is
      possible, but discouraged.
    * auth: Removed RPA auth mechanism, SKEY auth mechanism, NTLM auth
      mechanism and related password schemes.
    * auth: Removed passdb-sia, passdb-vpopmail and userdb-vpopmail.
    * auth: Removed postfix postmap socket
    + auth: Added new fields for auth server events. These fields are now
      also available for all auth events. See
      for details.
    + imap-hibernate: Added imap_client_hibernated, imap_client_unhibernated
      and imap_client_unhibernate_retried events. See for details.
    + lib-index: Added new mail_index_recreated event. See
    + lib-sql: Support TLS options for cassandra driver. This requires
      cpp-driver v2.15 (or later) to work reliably.
    + lib-storage: Missing $HasAttachment / $HasNoAttachment flags are now
      added to existing mails if mail_attachment_detection_option=add-flags
      and it can be done inexpensively.
    + login proxy: Added login_proxy_max_reconnects setting (default 3) to
      control how many reconnections are attempted.
    + login proxy: imap/pop3/submission/managesieve proxying now supports
      reconnection retrying on more than just connect() failure. Any error
      except a non-temporary authentication failure will result in reconnect
    - auth: Lua passdb/userdb leaks stack elements per call, eventually
      causing the stack to become too deep and crashing the auth or
      auth-worker process.
    - auth: SASL authentication PLAIN mechanism could be used to trigger
      read buffer overflow. However, this doesn't seem to be exploitable in
      any way.
    - auth: v2.3.11 regression: GSSAPI authentication fails because dovecot
      disallows NUL bytes for it.
    - dict: Process used too much CPU when iterating keys, because each key
      used a separate write() syscall.
    - doveadm-server: Crash could occur if logging was done outside command
      handling. For example http-client could have done debug logging
      afterwards, resulting in either segfault or
      Panic: file http-client.c: line 642 (http_client_context_close):
      assertion failed: (cctx->clients_list == NULL).
    - doveadm-server: v2.3.11 regression: Trying to connect to doveadm server
      process via starttls assert-crashed if there were no ssl=yes listeners:
      Panic: file master-service-ssl.c: line 22 (master_service_ssl_init):
      assertion failed: (service->ssl_ctx_initialized).
    - fts-solr: HTTP requests may have assert-crashed:
      Panic: file http-client-request.c: line 1232
      assertion failed: (req->payload_input != NULL)
    - imap: IMAP NOTIFY could crash with a segmentation fault due to a bad
      configuration that causes errors. Sending the error responses to the
      client can cause the segmentation fault. This can for example happen
      when several namespaces use the same mail storage location.
    - imap: IMAP NOTIFY used on a shared namespace that doesn't actually
      exist (e.g. public namespace for a nonexistent user) can crash with a
      Panic: Leaked view for index /tmp/home/asdf/mdbox/dovecot.list.index:
      Opened in (null):0
    - imap: IMAP session can crash with QRESYNC extension if many changes
      are done before asking for expunged mails since last sync.
    - imap: Process might hang indefinitely if client disconnects after
      sending some long-running commands pipelined, for example FETCH+LOGOUT.
    - lib-compress: Mitigate crashes when configuring a not compiled in
      compression. Errors with compression configuration now distinguish
      between not supported and unknown.
    - lib-compression: Using xz/lzma compression in v2.3.11 could have
      written truncated output in some situations. This would result in
      "Broken pipe" read errors when trying to read it back.
    - lib-compression: zstd compression could have crashed in some situations:
      Panic: file ostream.c: line 287 (o_stream_sendv_int): assertion
      failed: (!stream->blocking)
    - lib-dict: dict client could have crashed in some rare situations when
      iterating keys.
    - lib-http: Fix several assert-crashes in HTTP client.
    - lib-index: v2.3.11 regression: When mails were expunged at the same
      time as lots of new content was being saved to the cache (e.g. cache
      file was lost and is being re-filled) a deadlock could occur with
      dovecot.index.cache / dovecot.index.log.
    - lib-index: v2.3.11 regression: dovecot.index.cache file was being
      purged (rewritten) too often when it had a field that hadn't been
      accessed for over 1 month, but less than 2 months. Every cache file
      change caused a purging in this situation.
    - lib-mail: MIME parts were not returned correctly by Dovecot MIME parser.
      Regression caused by fixing CVE-2020-12100.
    - lib-mail: When max nested MIME parts were reached, IMAP BODYSTRUCTURE
      was written in a way that may have caused confusion for both IMAP
      clients and Dovecot itself when parsing it. The truncated part is now
      written out using application/octet-stream MIME type.
    - lib-mail: v2.3.11 regression: Mail delivery / parsing crashed when the
      10000th MIME part was message/rfc822 (or if parent was multipart/digest):
      Panic: file message-parser.c: line 167 (message_part_append):
      assertion failed: (ctx->total_parts_count <= ctx->max_total_mime_parts).
    - lib-oauth2: Dovecot incorrectly required oauth2 server introspection
      reply to contain username with invalid token.
    - lib-ssl-iostream, lib-dcrypt: Fix building with OpenSSL that has
      deprecated APIs disabled.
    - lib-storage: When mail's size is different from the cached one (in
      dovecot.index.cache or Maildir S=size in the filename), this is
      handled by logging "Cached message size smaller/larger than expected"
      error. However, in some situations this also ended up crashing with:
      Panic: file istream.c: line 315 (i_stream_read_memarea):
      assertion failed: (old_size <= _stream->pos - _stream->skip).
    - lib-storage: v2.3 regression: Copying/moving mails was taking much more
      memory than before. This was mainly visible when copying/moving
      thousands of mails in a single transaction.
    - lib-storage: v2.3.11 regression: Searching messages assert-crashed
      (without FTS): Panic: file message-parser.c: line 174
      assertion failed: (ctx->nested_parts_count > 0).
    - lib: Dovecot v2.3 moved signal handlers around in ioloops,
      causing more CPU usage than in v2.2.
    - lib: Fixed JSON parsing: '\' escape sequence may have wrongly resulted
      in error if it happened to be at read boundary. Any NUL characters and
      '\u0000' will now result in parsing error instead of silently
      truncating the data.
    - lmtp, submission: Server may hang if SSL client connection disconnects
      during the delivery. If this happened repeated, it could have ended
      up reaching process_limit and preventing any further lmtp/submission
    - lmtp: Proxy does not always properly log TLS connection problems as
      errors; in some cases, only a debug message is logged if enabled.
    - lmtp: The LMTP service can hang when commands are pipelined. This can
      particularly occur when one command in the middle of the pipeline fails.
      One example of this occurs for proxied LMTP transactions in which the
      final DATA or BDAT command is pipelined after a failing RCPT command.
    - login-proxy: The login_source_ips setting has no effect, and therefore
      the proxy source IPs are not cycled through as they should be.
    - master: Process was using 100% CPU in some situations when a broken
      service was being throttled.
    - pop3-login: POP3 login would fail with "Input buffer full" if the
      initial response for SASL was too long.
    - stats: Crash would occur when generating openmetrics data for metrics
      using aggregating functions.
    Pigeonhole 0.5.13
    - duplicate: The test was handled badly in a multiscript (sieve_before,
      sieve_after) scenario in which an earlier script in the sequence with
      a duplicate test succeeded, while a later script caused a runtime
      failure. In that case, the message is recorded for duplicate tracking,
      while the message may not actually have been delivered in the end.
    - editheader: Sieve interpreter entered infinite loop at startup when
      the "editheader" configuration listed an invalid header name. This
      problem can only be triggered by the administrator.
    - relational: The Sieve relational extension can cause a segfault at
      compile time. This is triggered by invalid script syntax. The segfault
      happens when this match type is the last argument of the test command.
      This situation is not possible in a valid script; positional arguments
      are normally present after that, which would prevent the segfault.
    - sieve: For some Sieve commands the provided mailbox name is not
      properly checked for UTF-8 validity, which can cause assert crashes at
      runtime when an invalid mailbox name is encountered. This can be
      caused by the user by writing a bad Sieve script involving the
      affected commands ("mailboxexists", "specialuse_exists").
      This can be triggered by the remote sender only when the user has
      written a Sieve script that passes message content to one of the
      affected commands.
    - sieve: Large sequences of 8-bit octets passed to certain Sieve
      commands that create or modify message headers that allow UTF-8 text
      (vacation, notify and addheader) can cause the delivery or IMAP
      process (when IMAPSieve is used) to enter a memory-consuming
      semi-infinite loop that ends when the process exceeds its memory
      limits. Logged in users can cause these hangs only for their own
  - drop upstreamed patches:
    - dovecot-
    - dovecot-
    - dovecot-



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Fabrice Bellet, Sat May 25 00:06:51 2024