pcre2

[exim.git] / doc / doc-txt / ChangeLog

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index d741e3532d9cee83d11dc86e8add4f4da6b72d69..63f35788528ce3fe188fd054985c17949b7831a0 100644 (file)
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -2,6 +2,17 @@ This document describes *changes* to previous versions, that might
 affect Exim's operation, with an unchanged configuration file.  For new
 options, and new features, see the NewStuff file next to this ChangeLog.
 
 affect Exim's operation, with an unchanged configuration file.  For new
 options, and new features, see the NewStuff file next to this ChangeLog.
 

+Since 4.95
+----------
+
+JH/01 Move the wait-for-next-tick (needed for unique messmage IDs) from
+      after reception to before a subsequence reception.  This should
+      mean slightly faster delivery, and also confirmation of reception
+      to senders.
+
+JH/02 Move from using the pcre library to pcre2.  The former is no longer
+      being developed or supported (by the original developer).
+

 
 Exim version 4.95
 -----------------
 
 Exim version 4.95
 -----------------


@@ -38,7 +49,7 @@ JH/06 Bug 2594: Change the name used for certificate name checks in the smtp
 JH/07 Bug 2597: Fix a resource leak.  Using a lookup in obtaining a value for
       smtp_accept_max_per_host allocated resources which were not released
       when the limit was exceeded.  This eventually crashed the daemon.  Fix
 JH/07 Bug 2597: Fix a resource leak.  Using a lookup in obtaining a value for
       smtp_accept_max_per_host allocated resources which were not released
       when the limit was exceeded.  This eventually crashed the daemon.  Fix

-      by adding a relase action in that path.
+      by adding a release action in that path.

 
 JH/08 Bug 2598: Fix verify ACL condition.  The options for the condition are
       expanded; previously using tainted values was rejected.  Fix by using
 
 JH/08 Bug 2598: Fix verify ACL condition.  The options for the condition are
       expanded; previously using tainted values was rejected.  Fix by using


@@ -75,7 +86,7 @@ JH/15 Bug 2620: Fix "spam" ACL condition.  Previously, tainted values for the
 
 JH/16 Bug 2615: Fix pause during message reception, on systems that have been
       suspended/resumed.  The Linux CLOCK_MONOTONIC does not account for time
 
 JH/16 Bug 2615: Fix pause during message reception, on systems that have been
       suspended/resumed.  The Linux CLOCK_MONOTONIC does not account for time

-      spent suspended, ignoring the Posix definition.  Previously we assumed
+      spent suspended, ignoring the POSIX definition.  Previously we assumed

       it did and a constant offset from real time could be used as a correction.
       Change to using the same clock source for the start-of-message and the
       post-message next-tick-wait.  Also change to using CLOCK_BOOTTIME if it
       it did and a constant offset from real time could be used as a correction.
       Change to using the same clock source for the start-of-message and the
       post-message next-tick-wait.  Also change to using CLOCK_BOOTTIME if it


@@ -83,12 +94,12 @@ JH/16 Bug 2615: Fix pause during message reception, on systems that have been
 
 JH/17 Bug 2295: Fix DKIM signing to always semicolon-terminate.  Although the
       RFC says it is optional some validators care.  The missing char was not
 
 JH/17 Bug 2295: Fix DKIM signing to always semicolon-terminate.  Although the
       RFC says it is optional some validators care.  The missing char was not

-      intended but triggered by a line-wrap alignement.  Discovery and fix by
+      intended but triggered by a line-wrap alignment.  Discovery and fix by

       Guillaume Outters, hacked on by JH.
 
 JH/18 Bug 2617: Fix a taint trap in parse_fix_phrase().  Previously when the
       name being quoted was tainted a trap would be taken.  Fix by using
       Guillaume Outters, hacked on by JH.
 
 JH/18 Bug 2617: Fix a taint trap in parse_fix_phrase().  Previously when the
       name being quoted was tainted a trap would be taken.  Fix by using

-      dynamicaly created buffers.  The routine could have been called by a
+      dynamically created buffers.  The routine could have been called by a

       rewrite with the "h" flag, by using the "-F" command-line option, or
       by using a "name=" option on a control=submission ACL modifier.
 
       rewrite with the "h" flag, by using the "-F" command-line option, or
       by using a "name=" option on a control=submission ACL modifier.
 


@@ -146,15 +157,15 @@ JH/29 Bug 2675: add outgoing-interface I= element to deferred "==" log lines,
 
 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,
 
 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
+      in a panic-log triggerable by sending a message with a long address in
+      a header.        Fix by increasing 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
       (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.
+      already 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/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.


@@ -182,7 +193,7 @@ JH/37 Enforce the expected size, for fixed-size records read from hints-DB
 
 JH/38 When logging an AUTH failure, as server, do not include sensitive
       information. Previously, the credentials would be included if given
 
 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.
+      as part of the AUTH command line and an ACL denied authentication.

 
 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
 
 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


@@ -236,14 +247,14 @@ JH/49 Bug 2710: when using SOCKS for additional messages after the first (a
       transport executions.  This also mean that the log lines for the
       messages can show the proxy information.
 
       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 
+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
       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.
+      content) were specifically tested for.  Now, also cover expansions
+      resulting 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/52 Fix ${ip6norm:} operator.  Previously, any trailing line text was dropped,
       making it unusable in complex expressions.


@@ -258,6 +269,75 @@ 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/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.
+
+JH/55 TLS: as server, reject connections with ALPN indicating non-smtp use.
+
+JH/56 Make the majority of info read from config files readonly, for defence-in-
+      depth against exploits.  Suggestion by Qualys.
+      Not supported on Solaris 10.
+
+JH/57 Fix control=fakreject for a custom message containing tainted data.
+      Previously this resulted in a log complaint, due to a re-expansion present
+      since fakereject was originally introduced.
+
+JH/58 GnuTLS: Fix certextract expansion.  If a second modifier after a tag
+      modifier was given, a loop resulted.
+

 
 Exim version 4.94
 -----------------
 
 Exim version 4.94
 -----------------