X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/4e9287801772d5aae181a9db0ef1dd1b514b2129..7eb6988c118847820de130c9317f851983e0ba8b:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 6f16fed82..9c3127b1b 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -5,6 +5,73 @@ 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 4.92.1 +------------------- + +JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917, OVE-20190718-0006) + + +Since version 4.92 +------------------ + +JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible + buffer overrun for (non-chunking) other transports. + +JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under + TLS1.3, means that a server rejecting a client certificate is not visible + to the client until the first read of encrypted data (typically the + response to EHLO). Add detection for that case and treat it as a failed + TLS connection attempt, so that the normal retry-in-clear can work (if + suitably configured). + +JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part + and/or domain. Found and fixed by Jason Betts. + +JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid + configuration). If a CNAME target was not a wellformed name pattern, a + crash could result. + +JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when + the OS reports them interleaved with other addresses. + +JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was + used both for input and for a verify callout, both encrypted, SMTP + responses being sent by the server could be lost. This resulted in + dropped connections and sometimes bounces generated by a peer sending + to this system. + +JH/11 Harden plaintext authenticator against a badly misconfigured client-send + string. Previously it was possible to cause undefined behaviour in a + library routine (usually a crash). Found by "zerons". + +JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no + output. + +JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old + API was removed, so update to use the newer ones. + + +JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks + to changes apparently associated with TLS1.3 handling some of the APIs + previously used were either nonfunctional or inappropriate. Strings + like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256 + and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace + the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 . + This affects log line X= elements, the $tls_{in,out}_cipher variables, + and the use of specific cipher names in the encrypted= ACL condition. + +JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the + verification result was not updated unless hosts_require_ocsp applied. + +JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option + queue_list_requires_admin set to false, non-admin users were denied the + facility. + +JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in + directory-of-certs mode. Previously they were advertised despite the + documentation. + + Exim version 4.92 ----------------- @@ -137,6 +204,63 @@ JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored. JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the msg:fail:internal event. Developement by Matthias Kurz. +JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was + far too small for todays use of crypto signatures stored there. Go all + the way to the max DNS message size of 64kB, even though this might be + overmuch for IOT constrained device use. + +JH/31 Fix a bad use of a copy function, which could be used to pointlessly + copy a string over itself. The library routine is documented as not + supporting overlapping copies, and on MacOS it actually raised a SIGABRT. + +JH/32 For main options check_spool_space and check_inode_space, where the + platform supports 64b integers, support more than the previous 2^31 kB + (i.e. more than 2 TB). Accept E, P and T multipliers in addition to + the previous G, M, k. + +JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the + $authenticated_fail_id variable on authentication failure. Previously + it was unset. + +JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0 + OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for + more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to + GNUTLS_SEC_PARAM_MEDIUM. + +JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server + side. Previously we would continue as if no SNI had been received. + +JH/36 Harden the handling of string-lists. When a list consisted of a sole + "<" character, which should be a list-separator specification, we walked + off past the nul-terimation. + +JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external + causes) even when the retry time is not yet met. Previously they were + not, meaning that when (say) an account was over-quota and temp-rejecting, + and multiple senders' messages were queued, only one sender would get + notified on each configured delay_warning cycle. + +JH/38 Bug 2351: Log failures to extract envelope addresses from message headers. + +JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth + cipher-suites, an error can be left on the stack even for a succeeding + accept; this results in impossible error messages when a later operation + actually does fail. + +AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they + return error codes indicating retry. Under TLS1.3 this becomes required. + +JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously + it only wrote the new authenticators, resulting in a lack of tracking of + peer changes of ESMTP extensions until the next cache flush. + +JH/41 Fix the loop reading a message header line to check for integer overflow, + and more-often against header_maxsize. Previously a crafted message could + induce a crash of the recive process; now the message is cleanly rejected. + +JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had + been totally disabled for all of 4.91. Discovery and fix by "Mad Alex". + Exim version 4.91 ----------------- @@ -504,7 +628,7 @@ JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly line, the header hash was calculated to an incorrect value thanks to the (relaxed) space the fold became. -HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked +HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked and confused the parent. JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process