Docs: tidy more uses of tainted variables

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

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index be07ba625d8acf76b751d4e482b3cab5f3989a7f..0354ff2580180857f610dd5760405b71995f8a61 100644 (file)
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -3,6 +3,53 @@ affect Exim's operation, with an unchanged configuration file.  For new
 options, and new features, see the NewStuff file next to this ChangeLog.
 
 
 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 a local
+      buffer was taking a taint-enforcement trap.  Fix by using dynamically
+      created buffers.  Similar fix for radius expansion condition.
+
+JH/03 Bug 2586: Fix listcount expansion operator.  Using tainted arguments is
+      reasonable, eg. to count headers.  Fix by using dynamically created
+      buffers rather than a local.  Do similar fixes for ACL actions "dcc",
+      "log_reject_target", "malware" and "spam"; the arguments are expanded
+      so could be handling tainted values.
+
+JH/04 Bug 2590: Fix -bi (newaliases).  A previous code rearrangement had
+      broken the (no-op) support for this sendmail command.  Restore it
+      to doing nothing, silently, and returning good status.
+
+JH/05 Bug 2593: Fix "vacation" in Exim filter.  Previously, when a "once"
+      record path was given (or the default used) without a leading directory
+      path, an error occurred on trying to open it.  Use the transport's working
+      directory.
+
+JH/06 Bug 2594: Change the name used for certificate name checks in the smtp
+      transport.  Previously it was the name on the DNS A-record; use instead
+      the head of the CNAME chain leading there (if there is one).  This seems
+      to align better with RFC 6125.
+
+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.
+
+JH/08 Bug 2598: Fix verify ACL condition.  The options for the condition are
+      expanded; previously using tainted values was rejected.  Fix by using
+      dynamically-created buffers.
+
+JH/09 Relax restrictions on ACL verify condition needing access to message
+      headers.  Previously they were only permitted in data and non-smtp ACLs;
+      permit also mime, dkim, prdr quit and notquit.  Applies to header-syntax,
+      not_blind, header_sender and header_names_ascii verification.
+
+

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


@@ -93,6 +140,7 @@ JH/20 Taint checking: disallow use of tainted data for
       - the autoreply transport file, log and once options
       - file names used by the redirect router (including filter files)
       - named-queue names
       - 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
       Previously this was permitted.
 
 JH/21 Bug 2501: Fix init call in the heimdal authenticator.  Previously it


@@ -156,6 +204,56 @@ 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.
 
       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
 -----------------
 
 Exim version 4.93
 -----------------


@@ -256,7 +354,7 @@ JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
 
 JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
       A single TCP connection by a client will now hold a TLS connection open
 
 JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
       A single TCP connection by a client will now hold a TLS connection open

-      for multiple message deliveries, by default.  Previoud the default was to
+      for multiple message deliveries, by default.  Previously the default was to

       not do so.
 
 JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
       not do so.
 
 JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by