X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/2fe767453007d1b015f52313d16dc61635085621..exim-4_80_RC4:/doc/doc-txt/ChangeLog?ds=sidebyside diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 7aeba3d3c..8c7dc7230 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,12 +1,326 @@ -$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.632 2010/06/12 15:21:25 jetmore Exp $ - Change log file for Exim from version 4.21 ------------------------------------------- +Exim version 4.80 +----------------- + +PP/01 Handle short writes when writing local log-files. + In practice, only affects FreeBSD (8 onwards). + Bugzilla 1053, with thanks to Dmitry Isaikin. + +NM/01 Bugzilla 949 - Documentation tweak + +NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps + improved. + +NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs. + +PP/02 Implemented gsasl authenticator. + +PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option. + +PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use + `pkg-config foo` for cflags/libs. + +PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent + with rest of GSASL and with heimdal_gssapi. + +PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use + `pkg-config foo` for cflags/libs for the TLS implementation. + +PP/07 New expansion variable $tls_bits; Cyrus SASL server connection + properties get this fed in as external SSF. A number of robustness + and debugging improvements to the cyrus_sasl authenticator. + +PP/08 cyrus_sasl server now expands the server_realm option. + +PP/09 Bugzilla 1214 - Log authentication information in reject log. + Patch by Jeremy Harris. + +PP/10 Added dbmjz lookup type. + +PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid. + +PP/12 MAIL args handles TAB as well as SP, for better interop with + non-compliant senders. + Analysis and variant patch by Todd Lyons. + +NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated + Bug report from Lars Müller (via SUSE), + Patch from Dirk Mueller + +PP/13 tls_peerdn now print-escaped for spool files. + Observed some $tls_peerdn in wild which contained \n, which resulted + in spool file corruption. + +PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options" + values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read + or write after TLS renegotiation, which otherwise led to messages + "Got SSL error 2". + +TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted + as a tracking header (ie: a signed header comes before the signature). + Patch from Wolfgang Breyha. + +JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a + comma-sep list; embedded commas doubled. + +JH/02 Refactored ACL "verify =" logic to table-driven dispatch. + +PP/15 LDAP: Check for errors of TLS initialisation, to give correct + diagnostics. + Report and patch from Dmitry Banschikov. + +PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options". + Removed SSL_clear() after SSL_new() which led to protocol negotiation + failures. We appear to now support TLS1.1+ with Exim. + +PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate + lets Exim select keys and certificates based upon TLS SNI from client. + Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly + before an outbound SMTP session. New log_selector, +tls_sni. + +PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid + NULL dereference. Report and patch from Alun Jones. + +PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage + on less well tested platforms). Obviates NetBSD pkgsrc patch-ac. + Not seeing resolver debug output on NetBSD, but suspect this is a + resolver implementation change. + +PP/20 Revert part of NM/04, it broke log_path containing %D expansions. + Left warnings. Added "eximon gdb" invocation mode. + +PP/21 Defaulting "accept_8bitmime" to true, not false. + +PP/22 Added -bw for inetd wait mode support. + +PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to + locate the relevant includes and libraries. Made this the default. + +PP/24 Fixed headers_only on smtp transports (was not sending trailing dot). + Bugzilla 1246, report and most of solution from Tomasz Kusy. + +JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m"). + This may cause build issues on older platforms. + +PP/25 Revamped GnuTLS support, passing tls_require_ciphers to + gnutls_priority_init, ignoring Exim options gnutls_require_kx, + gnutls_require_mac & gnutls_require_protocols (no longer supported). + Added SNI support via GnuTLS too. + Made ${randint:..} supplier available, if using not-too-old GnuTLS. + +PP/26 Added EXPERIMENTAL_OCSP for OpenSSL. + +PP/27 Applied dnsdb SPF support patch from Janne Snabb. + Applied second patch from Janne, implementing suggestion to default + multiple-strings-in-record handling to match SPF spec. + +JH/04 Added expansion variable $tod_epoch_l for a higher-precision time. + +PP/28 Fix DCC dcc_header content corruption (stack memory referenced, + read-only, out of scope). + Patch from Wolfgang Breyha, report from Stuart Northfield. + +PP/29 Fix three issues highlighted by clang analyser static analysis. + Only crash-plausible issue would require the Cambridge-specific + iplookup router and a misconfiguration. + Report from Marcin Mirosław. + +PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy. + +PP/31 %D in printf continues to cause issues (-Wformat=security), so for + now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS. + As part of this, removing so much warning spew let me fix some minor + real issues in debug logging. + +PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing + assignment on my part. Fixed. + +PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit + of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by + Janne Snabb (who went above and beyond: thank you). + +PP/34 Validate tls_require_ciphers on startup, since debugging an invalid + string otherwise requires a connection and a bunch more work and it's + relatively easy to get wrong. Should also expose TLS library linkage + problems. + +PP/35 Pull in on Linux, for some portability edge-cases of + 64-bit ${eval} (JH/03). + + +Exim version 4.77 +----------------- + +PP/01 Solaris build fix for Oracle's LDAP libraries. + Bugzilla 1109, patch from Stephen Usher. + +TF/01 HP/UX build fix: avoid arithmetic on a void pointer. + +TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o + whitespace trailer + +TF/02 Fix a couple more cases where we did not log the error message + when unlink() failed. See also change 4.74-TF/03. + +TF/03 Make the exiwhat support code safe for signals. Previously Exim might + lock up or crash if it happened to be inside a call to libc when it + got a SIGUSR1 from exiwhat. + + The SIGUSR1 handler appends the current process status to the process + log which is later printed by exiwhat. It used to use the general + purpose logging code to do this, but several functions it calls are + not safe for signals. + + The new output code in the SIGUSR1 handler is specific to the process + log, and simple enough that it's easy to inspect for signal safety. + Removing some special cases also simplifies the general logging code. + Removing the spurious timestamps from the process log simplifies + exiwhat. + +TF/04 Improved ratelimit ACL condition. + + The /noupdate option has been deprecated in favour of /readonly which + has clearer semantics. The /leaky, /strict, and /readonly update modes + are mutually exclusive. The update mode is no longer included in the + database key; it just determines when the database is updated. (This + means that when you upgrde Exim will forget old rate measurements.) + + Exim now checks that the per_* options are used with an update mode that + makes sense for the current ACL. For example, when Exim is processing a + message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify + per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you + must specify per_mail/readonly. If you omit the update mode it defaults to + /leaky where that makes sense (as before) or /readonly where required. + + The /noupdate option is now undocumented but still supported for + backwards compatibility. It is equivalent to /readonly except that in + ACLs where /readonly is required you may specify /leaky/noupdate or + /strict/noupdate which are treated the same as /readonly. + + A useful new feature is the /count= option. This is a generalization + of the per_byte option, so that you can measure the throughput of other + aggregate values. For example, the per_byte option is now equivalent + to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }. + + The per_rcpt option has been generalized using the /count= mechanism + (though it's more complicated than the per_byte equivalence). When it is + used in acl_smtp_rcpt, the per_rcpt option adds recipients to the + measured rate one at a time; if it is used later (e.g. in acl_smtp_data) + or in a non-SMTP ACL it adds all the recipients in one go. (The latter + /count=$recipients_count behaviour used to work only in non-SMTP ACLs.) + Note that using per_rcpt with a non-readonly update mode in more than + one ACL will cause the recipients to be double-counted. (The per_mail + and per_byte options don't have this problem.) + + The handling of very low rates has changed slightly. If the computed rate + is less than the event's count (usually one) then this event is the first + after a long gap. In this case the rate is set to the same as this event's + count, so that the first message of a spam run is counted properly. + + The major new feature is a mechanism for counting the rate of unique + events. The new per_addr option counts the number of different + recipients that someone has sent messages to in the last time period. It + behaves like per_rcpt if all the recipient addresses are different, but + duplicate recipient addresses do not increase the measured rate. Like + the /count= option this is a general mechanism, so the per_addr option + is equivalent to per_rcpt/unique=$local_part@$domain. You can, for + example, measure the rate that a client uses different sender addresses + with the options per_mail/unique=$sender_address. There are further + details in the main documentation. + +TF/05 Removed obsolete $Cambridge$ CVS revision strings. + +TF/06 Removed a few PCRE remnants. + +TF/07 Automatically extract Exim's version number from tags in the git + repository when doing development or release builds. + +PP/02 Raise smtp_cmd_buffer_size to 16kB. + Bugzilla 879. Patch from Paul Fisher. + +PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport. + Heavily based on revision 40f9a89a from Simon Arlott's tree. + Bugzilla 97. + +PP/04 Use .dylib instead of .so for dynamic library loading on MacOS. + +PP/05 Variable $av_failed, true if the AV scanner deferred. + Bugzilla 1078. Patch from John Horne. + +PP/06 Stop make process more reliably on build failure. + Bugzilla 1087. Patch from Heiko Schlittermann. + +PP/07 Make maildir_use_size_file an _expandable_ boolean. + Bugzilla 1089. Patch from Heiko Schlittermann. + +PP/08 Handle ${run} returning more data than OS pipe buffer size. + Bugzilla 1131. Patch from Holger Weiß. + +PP/09 Handle IPv6 addresses with SPF. + Bugzilla 860. Patch from Wolfgang Breyha. + +PP/10 GnuTLS: support TLS 1.2 & 1.1. + Bugzilla 1156. + Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler]. + Bugzilla 1095. + +PP/11 match_* no longer expand right-hand-side by default. + New compile-time build option, EXPAND_LISTMATCH_RHS. + New expansion conditions, "inlist", "inlisti". + +PP/12 fix uninitialised greeting string from PP/03 (smtps client support). + +PP/13 shell and compiler warnings fixes for RC1-RC4 changes. + +PP/14 fix log_write() format string regression from TF/03. + Bugzilla 1152. Patch from Dmitry Isaikin. + + +Exim version 4.76 +----------------- + +PP/01 The new ldap_require_cert option would segfault if used. Fixed. + +PP/02 Harmonised TLS library version reporting; only show if debugging. + Layout now matches that introduced for other libraries in 4.74 PP/03. + +PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1 + +PP/04 New "dns_use_edns0" global option. + +PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid. + Bugzilla 1098. + +PP/06 Extra paranoia around buffer usage at the STARTTLS transition. + nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316 + +TK/01 Updated PolarSSL code to 0.14.2. + Bugzilla 1097. Patch from Andreas Metzler. + +PP/07 Catch divide-by-zero in ${eval:...}. + Fixes bugzilla 1102. + +PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed. + Bugzilla 1104. + +TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a + format-string attack -- SECURITY: remote arbitrary code execution. + +TK/03 SECURITY - DKIM signature header parsing was double-expanded, second + time unintentionally subject to list matching rules, letting the header + cause arbitrary Exim lookups (of items which can occur in lists, *not* + arbitrary string expansion). This allowed for information disclosure. + +PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to + INT_MIN/-1 -- value coerced to INT_MAX. + + Exim version 4.75 ----------------- -NM/01 Workround for PCRE version dependancy in version reporting +NM/01 Workround for PCRE version dependency in version reporting Bugzilla 1073 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0. @@ -44,6 +358,48 @@ PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which PP/06 Bugzilla 1042: implement freeze_signal on pipe transports. Patch from Jakob Hirsch. +PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal + SQL string expansion failure details. + Patch from Andrey Oktyabrski. + +PP/08 Bugzilla 486: implement %M datestamping in log filenames. + Patch from Simon Arlott. + +PP/09 New lookups functionality failed to compile on old gcc which rejects + extern declarations in function scope. + Patch from Oliver Fleischmann + +PP/10 Use sig_atomic_t for flags set from signal handlers. + Check getgroups() return and improve debugging. + Fixed developed for diagnosis in bug 927 (which turned out to be + a kernel bug). + +PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag. + Patch from Mark Zealey. + +PP/12 Bugzilla 1056: Improved spamd server selection. + Patch from Mark Zealey. + +PP/13 Bugzilla 1086: Deal with maildir quota file races. + Based on patch from Heiko Schlittermann. + +PP/14 Bugzilla 1019: DKIM multiple signature generation fix. + Patch from Uwe Doering, sign-off by Michael Haardt. + +NM/05 Fix to spam.c to accommodate older gcc versions which dislike + variable declaration deep within a block. Bug and patch from + Dennis Davis. + +PP/15 lookups-Makefile IRIX compatibilty coercion. + +PP/16 Make DISABLE_DKIM build knob functional. + +NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler + Patch by Simon Arlott + +TF/03 Fix valgrind.h portability to C89 compilers that do not support + variable argument macros. Our copy now differs from upstream. + Exim version 4.74 ----------------- @@ -181,7 +537,7 @@ DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim run-time user, instead of root. -PP/28 Add WHITELIST_D_MACROS option to let some macros be overriden by the +PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the Exim run-time user without dropping privileges. DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the