X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/dcc5e2cbb4a253eea54c12320e54fb5d85d64e5f..9d783bb9f39bca59e720d0c543499b372c412441:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index 1ce732f52..59211fbb7 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -121,10 +121,199 @@ PP/01 Fix default prime selection to be consistent. execution flows will use the same DH primes (currently exim.dev.20160529.3). -JH/25 OpenSSL: Fix back-compatibiility behaviour surrounding tls_certificates +JH/25 OpenSSL: Fix back-compatibility behaviour surrounding tls_certificates option in smtp transport, to match the documentation. Previously verification was not being done in some cases where it should have been. +JH/26 Bug 2646: fix a memory usage issue in ldap lookups. Previously, when more + than one server was defined and depending on the platform memory layout + details, an internal consistency trap could be hit while walking the list + of servers. + +JH/27 Bug 2648: fix the passing of an authenticator public-name through spool + files. The value is used by the authresults expansion item. Previously + if this was used in a router or transport, a crash could result. + +JH/28 Fix spurious logging of select error. Some platforms, notably FreeBSD, + have a sufficient incidence of EINTR returns from select that an + interaction with other operations done by the main daemon loop exposed + a bug in the error-handling. This was benign apart from the log + messages. + +JH/29 Bug 2675: add outgoing-interface I= element to deferred "==" log lines, + for consistency with delivered "=>" and failed "**" lines. While we're + there, handle PRX and TFO. + +JH/30 Bug 2677: fix matching of long addresses. Since 4.93 a limit of 256 was + applied. This resulted, if any header-line rewrite rules were configured, + in a panic-log trigerrable by sending a message with a long address in + a header. Fix by increaing the arbitrary limit to larger than a single + (dewrapped) 5322 header line maximum size. + +JH/31 The ESMTP option name advertised for the SUPPORT_EARLY_PIPE build option + is changed from X_PIPE_CONNECT to PIPE_CONNECT. This is in line with + RFC 6648 which deprecates X- options in protocols as a general practice. + Changeover between the implementations is handled by the mechanisms + alrready coded. + +JH/32 Bug 2599: fix delay of delivery to a local address where there is also + a remote which uses callout/hold. Previously the local was queued. + +JH/33 Fix a taint trap in the ${listextract } expansion when the source data + was tainted. + +JH/34 Fix the placement of a multiple-message delivery marker in the delivery + log line. The asterisk is now consistently appended to the remote IP + (and port, if given), and will also be provided on defer and fail log + lines. Previously it could be placed on the local IP if that was being + logged, and was only provided on delivery lines. + +JH/35 Bug 2343: Harden exim_tidydb against corrupt wait- files. + +JH/36 Bug 2687: Fix interpretation of multiple ^ chars in a plaintext + authenticator client_send option. Previously the next char, after a pair + was collapsed, was taken verbatim (so ^^^foo became ^^foo; ^^^^foo became + ^^\x00foo). Fixed to get ^\x00foo and ^^foo respectively to match the + documentation. There is still no way to get a leading ^ immediately + after a NUL (ie. for the password of a PLAIN method authenticator. + +JH/37 Enforce the expected size, for fixed-size records read from hints-DB + files. For bad sizes read, delete the record and whine to paniclog. + +JH/38 When logging an AUTH failure, as server, do not include sensitive + information. Previously, the credentials would be included if given + as part of the AUTH command line and an ACL denied authentidcation. + +JH/39 Bug 2691: fix $local_part_data. When the matching list element + referred to a file, bad data was returned. This likely also affected + $domain_part_data. + +JH/40 The gsasl authenticator now supports caching of the salted password + generated by the client-side implementation. This required the addition + of a new variable: $auth4. + +JH/41 Fix daemon SIGHUP on FreeBSD. Previously, a named socket for IPC was + left undeleted; the attempt to re-create it then failed - resulting in + the usual "SIGHUP tp have daemon reload configuration" to not work. + This affected any platform not supporting "abstract" Unix-domain + sockets (i.e. not Linux). + +JH/42 Bug 2693: Harden against a peer which reneges on a 452 "too many + recipients" response to RCPT in a later response, with a 250. The + previous coding assumed this would not happen, and under PIPELINING + would result in both lost and duplicate recipients for a message. + +JH/43 Bug 2694: Fix weighted distribution of work to multiple spamd servers. + Previously the weighting was incorrectly applied. Similar fix for socks + proxies. Found and fixed by Heiko Schlichting. + +JH/44 Bug 2701: Fix list-expansion of dns_ipv4_lookup. Previously, it did + not handle sub-lists included using the +namedlist syntax. While + investigating, the same found for dns_trust_aa, dns_again_means_nonexist, + dnssec_require_domains, dnssec_request_domains, srv_fail_domains, + mx_fail_domains. + +JH/45 Use a (new) separate store pool-pair for DKIM verify working data. + Previously the permanent pool was used, so the sore could not be freed. + This meant a connection with many messages would use continually-growing + memory. + +JH/46 Use an exponentially-increasing block size when malloc'ing store. Do it + per-pool so as not to waste too much space. Previously a constant size + was used which resulted in O(n^2) behaviour; now we get O(n log n) making + DOS attacks harder. The cost is wasted memory use in the larger blocks. + +JH/47 Use explicit alloc/free for DNS lookup workspace. This permits using the + same space repeatedly, and a smaller process footprint. + +JH/48 Use a less bogus-looking filename for a temporary used for DH-parameters + for GnuTLS. Previously the name started "%s" which, while not a bug, + looked as if if might be one. + +JH/49 Bug 2710: when using SOCKS for additional messages after the first (a + "continued connection") make the $proxy_* variables available. Previously + the information was not passed across the exec() call for subsequent + transport executions. This also mean that the log lines for the + messages can show the proxy information. + +JH/50 Bug 2672: QT elements in log lines, unless disabled, now exclude the + receive time. With modern systems the difference is significant. + The historical behaviour can be restored by disabling (a new) log_selector + "queue_time_exclusive". + +JH/51 Taint-check ACL line. Previously, only filenames (for out-of-line ACL + content) were specifically tested for. Now, also cover epxansions + rerulting in acl names and inline ACL content. + +JH/52 Fix ${ip6norm:} operator. Previously, any trailing line text was dropped, + making it unusable in complex expressions. + +JH/53 Bug 2743: fix immediate-delivery via named queue. Previously this would + fail with a taint-check on the spoolfile name, and leave the message + queued. + +HS/01 Enforce absolute PID file path name. + +HS/02 Handle SIGINT as we handle SIGTERM: terminate the Exim process. + +PP/01 Add a too-many-bad-recipients guard to the default config's RCPT ACL. + +PP/02 Bug 2643: Correct TLS DH constants. + A missing NUL termination in our code-generation tool had led to some + incorrect Diffie-Hellman constants in the Exim source. + Reported by kylon94, code-gen tool fix by Simon Arlott. + +PP/03 Impose security length checks on various command-line options. + Fixes CVE-2020-SPRSS reported by Qualys. + +PP/04 Fix Linux security issue CVE-2020-SLCWD and guard against PATH_MAX + better. Reported by Qualys. + +PP/05 Fix security issue CVE-2020-PFPSN and guard against cmdline invoker + providing a particularly obnoxious sender full name. + Reported by Qualys. + +PP/06 Fix CVE-2020-28016 (PFPZA): Heap out-of-bounds write in parse_fix_phrase() + +PP/07 Refuse to allocate too little memory, block negative/zero allocations. + Security guard. + +PP/08 Change default for recipients_max from unlimited to 50,000. + +PP/09 Fix security issue with too many recipients on a message (to remove a + known security problem if someone does set recipients_max to unlimited, + or if local additions add to the recipient list). + Fixes CVE-2020-RCPTL reported by Qualys. + +PP/10 Fix security issue in SMTP verb option parsing + Fixes CVE-2020-EXOPT reported by Qualys. + +PP/11 Fix security issue in BDAT state confusion. + Ensure we reset known-good where we know we need to not be reading BDAT + data, as a general case fix, and move the places where we switch to BDAT + mode until after various protocol state checks. + Fixes CVE-2020-BDATA reported by Qualys. + +HS/03 Die on "/../" in msglog file names + +QS/01 Creation of (database) files in $spool_dir: only uid=0 or the uid of + the Exim runtime user are allowed to create files. + +QS/02 PID file creation/deletion: only possible if uid=0 or uid is the Exim + runtime user. + +QS/03 When reading the output from interpreted forward files we do not + pass the pipe between the parent and the interpreting process to + executed child processes (if any). + +QS/04 Always die if requested from internal logging, even is logging is + disabled. + +JH/54 DMARC: recent versions of the OpenDMARC library appear to have broken + the API; compilation noo longer completes with DMARC support included. + This affects 1.4.1-1 on Fedora 33 (1.3.2-3 is functional); and has + been reported on other platforms. + Exim version 4.94 -----------------