doc-txt updates for the security changes

[users/jgh/exim.git] / doc / doc-txt / NewStuff

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 559a9f4c0f7efa0cc24c99e28bf4054519e94290..b9d88ff82702e03bbc9dfbd48f681dd2223d40c7 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.173 2010/06/07 07:09:10 pdp Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.176 2010/06/14 18:51:10 pdp Exp $

 
 New Features in Exim
 --------------------
 
 New Features in Exim
 --------------------


@@ -12,6 +12,9 @@ the documentation is updated, this file is reduced to a short list.
 Version 4.73
 ------------
 
 Version 4.73
 ------------
 

+ NOTE: this version is not guaranteed backwards-compatible, please read the
+       items below carefully
+

  1. A new main configuration option, "openssl_options", is available if Exim
     is built with SSL support provided by OpenSSL.  The option allows
     administrators to specify OpenSSL options to be used on connections;
  1. A new main configuration option, "openssl_options", is available if Exim
     is built with SSL support provided by OpenSSL.  The option allows
     administrators to specify OpenSSL options to be used on connections;


@@ -38,10 +41,14 @@ Version 4.73
 
       av_scanner = clamd:192.0.2.3 1234:local
 
 
       av_scanner = clamd:192.0.2.3 1234:local
 

+    ClamAV's ExtendedDetectionInfo response format is now handled.
+

  4. There is now a -bmalware option, restricted to admin users.  This option
     takes one parameter, a filename, and scans that file with Exim's
     malware-scanning framework.  This is intended purely as a debugging aid
     to ensure that Exim's scanning is working, not to replace other tools.
  4. There is now a -bmalware option, restricted to admin users.  This option
     takes one parameter, a filename, and scans that file with Exim's
     malware-scanning framework.  This is intended purely as a debugging aid
     to ensure that Exim's scanning is working, not to replace other tools.

+    Note that the ACL framework is not invoked, so if av_scanner references
+    ACL variables without a fallback then this will fail.

 
  5. There is a new expansion operator, "reverse_ip", which will reverse IP
     addresses; IPv4 into dotted quad, IPv6 into dotted nibble.  Examples:
 
  5. There is a new expansion operator, "reverse_ip", which will reverse IP
     addresses; IPv4 into dotted quad, IPv6 into dotted nibble.  Examples:


@@ -75,14 +82,39 @@ Version 4.73
     then henceforth you will have to maintain your own local patches to strip
     the safeties off.
 
     then henceforth you will have to maintain your own local patches to strip
     the safeties off.
 

- 8. Routers now support multiple "condition" tests, IF each router yields
-    a string which the bool{} operator recognises.  Note that this is a departure
-    from normal Router "condition" truth, requiring the stricter standard of
-    "true" that ACLS use.  This might be relaxed in a future release if there
-    is sufficient demand.
-    When debugging, bear in mind that these are internally wrapped up into
-    a longer, more complicated, string.  There's a reason that the bool{}
-    logic is a dependency.
+ 8. There is a new expansion operator, bool_lax{}.  Where bool{} uses the ACL
+    condition logic to determine truth/failure and will fail to expand many
+    strings, bool_lax{} uses the router condition logic, where most strings
+    do evaluate true.
+    Note: bool{00} is false, bool_lax{00} is true.
+
+ 9. Routers now support multiple "condition" tests,
+
+10. There is now a runtime configuration option "tcp_wrappers_daemon_name".
+    Setting this allows an admin to define which entry in the tcpwrappers
+    config file will be used to control access to the daemon.  This option
+    is only available when Exim is built with USE_TCP_WRAPPERS.  The
+    default value is set at build time using the TCP_WRAPPERS_DAEMON_NAME
+    build option.
+
+11. [POSSIBLE CONFIG BREAKAGE] The default value for system_filter_user is now
+    the Exim run-time user, instead of root.
+
+12. [POSSIBLE CONFIG BREAKAGE] ALT_CONFIG_ROOT_ONLY is no longer optional and
+    is forced on.  This is mitigated by the new build option
+    TRUSTED_CONFIG_PREFIX_LIST which defines a list of pathname prefices which
+    are trusted; if a config file is owned by root and is under that prefix,
+    then it may be used by the Exim run-time user.
+
+13. [POSSIBLE CONFIG BREAKAGE] The Exim user is no longer automatically
+    trusted to supply -D<Macro[=Value]> overrides on the command-line.  Going
+    forward, we recommend using TRUSTED_CONFIG_PREFIX_LIST with shim configs
+    that include the main config.  As a transition mechanism, we are
+    temporarily providing a work-around: the new build option
+    WHITELIST_D_MACROS provides a colon-separated list of macro names which
+    may be overriden by the Exim run-time user.  The values of these macros
+    are constrained to the regex ^[A-Za-z0-9_/.-]*$ (which explicitly does
+    allow for empty values).

 
 
 Version 4.72
 
 
 Version 4.72