X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/e7568d513f9b5a853e5cdb5db8b2cc0d53f79981..exim-4_83:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 2021a2ad8..61086c7e2 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,7 +1,161 @@ Change log file for Exim from version 4.21 ------------------------------------------- -Exim version 4.81 + +Exim version 4.83 +----------------- + +TF/01 Correctly close the server side of TLS when forking for delivery. + + When a message was received over SMTP with TLS, Exim failed to clear up + the incoming connection properly after forking off the child process to + deliver the message. In some situations the subsequent outgoing + delivery connection happened to have the same fd number as the incoming + connection previously had. Exim would try to use TLS and fail, logging + a "Bad file descriptor" error. + +TF/02 Portability fix for building lookup modules on Solaris when the xpg4 + utilities have not been installed. + +JH/01 Fix memory-handling in use of acl as a conditional; avoid free of + temporary space as the ACL may create new global variables. + +TL/01 LDAP support uses per connection or global context settings, depending + upon the detected version of the libraries at build time. + +TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection + to extract and use the src ip:port in logging and expansions as if it + were a direct connection from the outside internet. PPv2 support was + updated based on HAProxy spec change in May 2014. + +JH/02 Add ${listextract {number}{list}{success}{fail}}. + +TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents. + Properly escape header and check for NULL return. + +PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok + not dns_use_dnssec. + +JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp. + +TL/04 Add verify = header_names_ascii check to reject email with non-ASCII + characters in header names, implemented as a verify condition. + Contributed by Michael Fischer v. Mollard. + +TL/05 Rename SPF condition results err_perm and err_temp to standardized + results permerror and temperror. Previous values are deprecated but + still accepted. In a future release, err_perm and err_temp will be + completely removed, which will be a backward incompatibility if the + ACL tests for either of these two old results. Patch contributed by + user bes-internal on the mailing list. + +JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau. + +JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log + selectors, in both main and reject logs. + +JH/06 Log outbound-TLS and port details, subject to log selectors, for a + failed delivery. + +JH/07 Add malware type "sock" for talking to simple daemon. + +JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport. + +JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in + routers/transports under cutthrough routing. + +JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative + numbers. Touch up "bool" conditional to keep the same definition. + +TL/06 Remove duplicated language in spec file from 4.82 TL/16. + +JH/11 Add dnsdb tlsa lookup. From Todd Lyons. + +JH/12 Expand items in router/transport headers_add or headers_remove lists + individually rather than the list as a whole. Bug 1452. + + Required for reasonable handling of multiple headers_ options when + they may be empty; requires that headers_remove items with embedded + colons must have them doubled (or the list-separator changed). + +TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly + view the policy declared in the DMARC record. Currently, $dmarc_status + is a combined value of both the record presence and the result of the + analysis. + +JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455. + +JH/14 New options dnssec_request_domains, dnssec_require_domains on the + dnslookup router and the smtp transport (applying to the forward + lookup). + +TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list + of ldap servers used for a specific lookup. Patch provided by Heiko + Schlichting. + +JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups. + New variable $lookup_dnssec_authenticated for observability. + +TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use. + Patch submitted by Lars Timman. + +JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459. + +TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim. + Requires trusted mode and valid format message id, aborts otherwise. + Patch contributed by Heiko Schlichting. + +JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item + certextract with support for various fields. Bug 1358. + +JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling + is requested by default, modifiable by smtp transport option + hosts_request_ocsp. + +JH/22 Expansion operators ${md5:string} and ${sha1:string} can now + operate on certificate variables to give certificate fingerprints + Also new ${sha256:cert_variable}. + +JH/23 The PRDR feature is moved from being Experimental into the mainline. + +TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from + Christian Aistleitner. + +JH/24 The OCSP stapling feature is moved from Experimental into the mainline. + +TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool + file. Patch from Wolfgang Breyha. + +JH/25 Expand the coverage of the delivery $host and $host_address to + client authenticators run in verify callout. Bug 1476. + +JH/26 Port service names are now accepted for tls_on_connect_ports, to + align with daemon_smtp_ports. Bug 72. + +TF/03 Fix udpsend. The ip_connectedsocket() function's socket type + support and error reporting did not work properly. + +TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists + and is readable. Patch from Andrew Colin Kissa. + +TL/14 Enhance documentation of ${run expansion and how it parses the + commandline after expansion, particularly in the case when an + unquoted variable expansion results in an empty value. + +JH/27 The TLS SNI feature was broken in 4.82. Fix it. + +PP/02 Fix internal collision of T_APL on systems which support RFC3123 + by renaming away from it. Addresses GH issue 15, reported by + Jasper Wallace. + +JH/28 Fix parsing of MIME headers for parameters with quoted semicolons. + +TL/15 SECURITY: prevent double expansion in math comparison functions + (can expand unsanitized data). Not remotely exploitable. + CVE-2014-2972 + + +Exim version 4.82 ----------------- PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities. @@ -38,6 +192,17 @@ TL/02 Add +smtp_confirmation as a default logging option. TL/03 Bugzilla 198 - Implement remove_header ACL modifier. Patch by Magnus Holmgren from 2007-02-20. +TL/04 Bugzilla 1281 - Spec typo. + Bugzilla 1283 - Spec typo. + Bugzilla 1290 - Spec grammar fixes. + +TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation. + +TL/06 Add Experimental DMARC support using libopendmarc libraries. + +TL/07 Fix an out of order global option causing a segfault. Reported to dev + mailing list by by Dmitry Isaikin. + JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support. JH/02 Support "G" suffix to numbers in ${if comparisons. @@ -49,7 +214,9 @@ NM/01 Bugzilla 1197 - Spec typo JH/03 Add expansion operators ${listnamed:name} and ${listcount:string} -PP/09 Add gnutls_enable_pkcs11 option. +PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called + gnutls_enable_pkcs11, but renamed to more accurately indicate its + function. PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC. Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler. @@ -60,6 +227,206 @@ JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition JH/05 Permit multiple router/transport headers_add/remove lines. +JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination. + +JH/07 Avoid using a waiting database for a single-message-only transport. + Performance patch from Paul Fisher. Bugzilla 1262. + +JH/08 Strip leading/trailing newlines from add_header ACL modifier data. + Bugzilla 884. + +JH/09 Add $headers_added variable, with content from use of ACL modifier + add_header (but not yet added to the message). Bugzilla 199. + +JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line. + Pulled from Bugzilla 817 by Wolfgang Breyha. + +PP/11 SECURITY: protect DKIM DNS decoding from remote exploit. + CVE-2012-5671 + (nb: this is the same fix as in Exim 4.80.1) + +JH/11 Add A= logging on delivery lines, and a client_set_id option on + authenticators. + +JH/12 Add optional authenticated_sender logging to A= and a log_selector + for control. + +PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29. + +PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not + advertise SMTP AUTH mechanism to us, instead of a generic + protocol violation error. Also, make Exim more robust to bad + data from the Dovecot auth socket. + +TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients. + + When a queue runner is handling a message, Exim first routes the + recipient addresses, during which it prunes them based on the retry + hints database. After that it attempts to deliver the message to + any remaining recipients. It then updates the hints database using + the retry rules. + + So if a recipient address works intermittently, it can get repeatedly + deferred at routing time. The retry hints record remains fresh so the + address never reaches the final cutoff time. + + This is a fairly common occurrence when a user is bumping up against + their storage quota. Exim had some logic in its local delivery code + to deal with this. However it did not apply to per-recipient defers + in remote deliveries, e.g. over LMTP to a separate IMAP message store. + + This change adds a proper retry rule check during routing so that the + final cutoff time is checked against the message's age. We only do + this check if there is an address retry record and there is not a + domain retry record; this implies that previous attempts to handle + the address had the retry_use_local_parts option turned on. We use + this as an approximation for the destination being like a local + delivery, as in LMTP. + + I suspect this new check makes the old local delivery cutoff check + redundant, but I have not verified this so I left the code in place. + +TF/02 Correct gecos expansion when From: is a prefix of the username. + + Test 0254 submits a message to Exim with the header + + Resent-From: f + + When I ran the test suite under the user fanf2, Exim expanded + the header to contain my full name, whereas it should have added + a Resent-Sender: header. It erroneously treats any prefix of the + username as equal to the username. + + This change corrects that bug. + +GF/01 DCC debug and logging tidyup + Error conditions log to paniclog rather than rejectlog. + Debug lines prefixed by "DCC: " to remove any ambiguity. + +TF/03 Avoid unnecessary rebuilds of lookup-related code. + +PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server. + Bug spotted by Jeremy Harris; was flawed since initial commit. + Would have resulted in OCSP responses post-SNI triggering an Exim + NULL dereference and crash. + +JH/13 Add $router_name and $transport_name variables. Bugzilla 308. + +PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd. + Bug detection, analysis and fix by Samuel Thibault. + Bugzilla 1331, Debian bug #698092. + +SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]' + +JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt). + Server implementation by Todd Lyons, client by JH. + Only enabled when compiled with EXPERIMENTAL_PRDR. A new + config variable "prdr_enable" controls whether the server + advertises the facility. If the client requests PRDR a new + acl_data_smtp_prdr ACL is called once for each recipient, after + the body content is received and before the acl_smtp_data ACL. + The client is controlled by bolth of: a hosts_try_prdr option + on the smtp transport, and the server advertisement. + Default client logging of deliveries and rejections involving + PRDR are flagged with the string "PRDR". + +PP/16 Fix problems caused by timeouts during quit ACLs trying to double + fclose(). Diagnosis by Todd Lyons. + +PP/17 Update configure.default to handle IPv6 localhost better. + Patch by Alain Williams (plus minor tweaks). + Bugzilla 880. + +PP/18 OpenSSL made graceful with empty tls_verify_certificates setting. + This is now consistent with GnuTLS, and is now documented: the + previous undocumented portable approach to treating the option as + unset was to force an expansion failure. That still works, and + an empty string is now equivalent. + +PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it + clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag, + not performing validation itself. + +PP/20 Added force_command boolean option to pipe transport. + Patch from Nick Koston, of cPanel Inc. + +JH/15 AUTH support on callouts (and hence cutthrough-deliveries). + Bugzilla 321, 823. + +TF/04 Added udpsend ACL modifer and hexquote expansion operator + +PP/21 Fix eximon continuous updating with timestamped log-files. + Broken in a format-string cleanup in 4.80, missed when I repaired the + other false fix of the same issue. + Report and fix from Heiko Schlichting. + Bugzilla 1363. + +PP/22 Guard LDAP TLS usage against Solaris LDAP variant. + Report from Prashanth Katuri. + +PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options. + It's SecureTransport, so affects any MacOS clients which use the + system-integrated TLS libraries, including email clients. + +PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if + using a MIME ACL for non-SMTP local injection. + Report and assistance in diagnosis by Warren Baker. + +TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver. + +JH/16 Fix comparisons for 64b. Bugzilla 1385. + +TL/09 Add expansion variable $authenticated_fail_id to keep track of + last id that failed so it may be referenced in subsequent ACL's. + +TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by + Alexander Miroch. + +TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls + ldap library initialization, allowing self-signed CA's to be + used. Also properly sets require_cert option later in code by + using NULL (global ldap config) instead of ldap handle (per + session). Bug diagnosis and testing by alxgomz. + +TL/12 Enhanced documentation in the ratelimit.pl script provided in + the src/util/ subdirectory. + +TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau + renamed to Transport Post Delivery Action by Jeremy Harris, as + EXPERIMENTAL_TPDA. + +TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled + when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable + redis_servers = needs to be configured which will be used by the redis + lookup. Patch from Warren Baker, of The Packet Hub. + +TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall. + +TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a + hostname or reverse DNS when processing a host list. Used suggestions + from multiple comments on this bug. + +TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey. + +TL/18 Had previously added a -CONTINUE option to runtest in the test suite. + Missed a few lines, added it to make the runtest require no keyboard + interaction. + +TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite + contains upper case chars. Make router use caseful_local_part. + +TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS + support when GnuTLS has been built with p11-kit. + + +Exim version 4.80.1 +------------------- + +PP/01 SECURITY: protect DKIM DNS decoding from remote exploit. + CVE-2012-5671 + This, or similar/improved, will also be change PP/11 of 4.82. + + Exim version 4.80 -----------------