X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/e9dfcfb7b87107c2a55441c93aa463f9ea7586e1..f7f933a199be8bb7362c715e0040545b514cddca:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 1cc3d63c8..93bd62cc4 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -3,6 +3,19 @@ affect Exim's operation, with an unchanged configuration file. For new options, and new features, see the NewStuff file next to this ChangeLog. +Exim version 4.95 +----------------- + +JH/01 Bug 1329: Fix format of Maildir-format filenames to match other mail- + related applications. Previously an "H" was used where available info + says that "M" should be, so change to match. + +JH/02 Bug 2587: Fix pam expansion condition. Tainted values are commonly used + as arguments, so an implementation trying to copy these into local + buffer was taking a taint-enformance trap. Fix by using dynamically + created buffers. + + Exim version 4.94 ----------------- @@ -35,6 +48,178 @@ JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix the ordering of its ARC headers. This caused a crash. +JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when + a new record was being constructed with information from the peer, a trap + was taken. + +JH/11 Bug 2494: Unset the default for dmarc_tld_file. Previously a naiive + installation would get error messages from DMARC verify, when it hit the + nonexistent file indicated by the default. Distros wanting DMARC enabled + should both provide the file and set the option. + Also enforce no DMARC verification for command-line sourced messages. + +JH/12 Fix an uninitialised flag in early-pipelining. Previously connections + could, depending on the platform, hang at the STARTTLS response. + +JH/13 Bug 2498: Reset a counter used for ARC verify before handling another + message on a connection. Previously if one message had ARC headers and + the following one did not, a crash could result when adding an + Authentication-Results: header. + +JH/14 Bug 2500: Rewind some of the common-coding in string handling between the + Exim main code and Exim-related utities. The introduction of taint + tracking also did many adjustments to string handling. Since then, eximon + frequently terminated with an assert failure. + +JH/15 When PIPELINING, synch after every hundred or so RCPT commands sent and + check for 452 responses. This slightly helps the inefficieny of doing + a large alias-expansion into a recipient-limited target. The max_rcpt + transport option still applies (and at the current default, will override + the new feature). The check is done for either cause of synch, and forces + a fast-retry of all 452'd recipients using a new MAIL FROM on the same + connection. The new facility is not tunable at this time. + +JH/16 Fix the variables set by the gsasl authenticator. Previously a pointer to + library live data was being used, so the results became garbage. Make + copies while it is still usable. + +JH/17 Logging: when the deliver_time selector ise set, include the DT= field + on delivery deferred (==) and failed (**) lines (if a delivery was + attemtped). Previously it was only on completion (=>) lines. + +JH/18 Authentication: the gsasl driver not provides the $authN variables in time + for the expansion of the server_scram_iter and server_scram_salt options. + +WB/01 SPF: DNS lookups for the obsolete SPF RR type done by the libspf2 library + are now specifically given a NO_DATA response without hitting the system + resolver. The library goes on to do the now-standard TXT lookup. + Use of dnsdb lookups is not affected. + +JH/19 Bug 2507: Modules: on handling a dynamic-module (lookups) open failure, + only retrieve the errormessage once. Previously two calls to dlerror() + were used, and the second one (for mainlog/paniclog) retrieved null + information. + +JH/20 Taint checking: disallow use of tainted data for + - the appendfile transport file and directory options + - the pipe transport command + - the autoreply transport file, log and once options + - file names used by the redirect router (including filter files) + - named-queue names + - paths used by single-key lookups + Previously this was permitted. + +JH/21 Bug 2501: Fix init call in the heimdal authenticator. Previously it + adjusted the size of a major service buffer; this failed because the + buffer was in use at the time. Change to a compile-time increase in the + buffer size, when this authenticator is compiled into exim. + +JH/22 Taint-checking: move to safe-mode taint checking on all platforms. The + previous fast-mode was untenable in the face of glibs using mmap to + support larger malloc requests. + +PP/01 Update the openssl_options possible values through OpenSSL 1.1.1c. + New values supported, if defined on system where compiled: + allow_no_dhe_kex, cryptopro_tlsext_bug, enable_middlebox_compat, + no_anti_replay, no_encrypt_then_mac, prioritize_chacha, tlsext_padding + +JH/23 Performance improvement in the initial phase of a two-pass queue run. By + running a limited number of proceses in parallel, a benefit is gained. The + amount varies with the platform hardware and load. The use of the option + queue_run_in_order means we cannot do this, as ordering becomes + indeterminate. + +JH/24 Bug 2524: fix the cyrus_sasl auth driver gssapi usage. A previous fix + had introduced a string-copy (for ensuring NUL-termination) which was not + appropriate for that case, which can include embedded NUL bytes in the + block of data. Investigation showed the copy to actually be needless, the + data being length-specified. + +JH/25 Fix use of concurrent TLS connections under GnuTLS. When a callout was + done during a receiving connection, and both used TLS, global info was + used rather than per-connection info for tracking the state of data + queued for transmission. This could result in a connection hang. + +JH/26 Fix use of the SIZE parameter on MAIL commands, on continued connections. + Previously, when delivering serveral messages down a single connection + only the first would provide a SIZE. This was due to the size information + not being properly tracked. + +JH/27 Bug 2530: When operating in a timezone with sub-minute offset, such as + TAI (at 37 seconds currently), pretend to be in UTC for time-related + expansion and logging. Previously, spurious values such as a future + minute could be seen. + +JH/28 Bug 2533: Fix expansion of ${tr } item. When called in some situations + it could crash from a null-deref. This could also affect the + ${addresses: } operator and ${readsock } item. + +JH/29 Bug 2537: Fix $mime_part_count. When a single connection had a non-mime + message following a mime one, the variable was not reset. + +JH/30 When an pipelined-connect fails at the first response, assume incorrect + cached capability (perhaps the peer reneged?) and immediately retry in + non-pipelined mode. + +JH/31 Fix spurious detection of timeout while writing to transport filter. + +JH/32 Bug 2541: Fix segfault on bad cmdline -f (sender) argument. Previously + an attempt to copy the string was made before checking it. + +JH/33 Fix the dsearch lookup to return an untainted result. Previously the + taint of the lookup key was maintained; we now regard the presence in the + filesystem as sufficient validation. + +JH/34 Fix the readsocket expansion to not segfault when an empty "options" + argument is supplied. + +JH/35 The dsearch lookup now requires that the directory is an absolute path. + Previously this was not checked, and nonempty relative paths made an + access under Exim's current working directory. + +JH/36 Bug 2554: Fix msg:defer event for the hosts_max_try_hardlimit case. + Previously no event was raised. + +JH/37 Bug 2552: Fix the check on spool space during reception to use the SIZE + parameter supplied by the sender MAIL FROM command. Previously it was + ignored, and only the check_spool_space option value for the required + leeway checked. + +JH/38 Fix $dkim_key_length. This should, after a DKIM verification, present + the size of the signing public-key. Previously it was instead giving + the size of the signature hash. + +JH/39 DKIM verification: the RFC 8301 restriction on sizes of RSA keys is now + the default. See the (new) dkim_verify_min_keysizes option. + +JH/40 Fix a memory-handling bug: when a connection carried multiple messages + and an ACL use a lookup for checking either the local_part or domain, + stale data could be accessed. Ensure that variable references are + dropped between messages. + +JH/41 Bug 2571: Fix SPA authenticator. Running as a server, an offset supplied + by the client was not checked as pointing within response data before + being used. A malicious client could thus cause an out-of-bounds read and + possibly gain authentication. Fix by adding the check. + +JH/42 Internationalisation: change the default for downconversion in the smtp + transport to be "if needed". Previously it was "as previously set" for + the message, which usually meant "if needed" for message-submission but + "no" for everything else. However, MTAs have been seen using SMTPUTF8 + even when the envelope addresses did not need it, resulting in forwarding + failures to non-supporting MTAs. A downconvert in such cases will be + a no-op on the addresses, merely dropping the use of SMTPUTF8 by the + transport. The change does mean that addresses needing conversion will + be converted when previously a delivery failure would occur. + +JH/43 Fix possible long line in DSN. Previously when a very long SMTP error + response was received it would be used unchecked in a fail-DSN, violating + standards on line-length limits. Truncate if needed. + +HS/01 Remove parameters of the link to www.open-spf.org. The linked form + doesn't work. (Additionally add a new main config option to configure the + spf_smtp_comment) + Exim version 4.93 -----------------