SECURITY: length limits on many cmdline options

[exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 9b8c92bbd66e0c164d7f2be67a3397e448c9eddb..61abb70c0751b8f368f1706f75a38a979a22aea4 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -51,6 +51,8 @@
 .set ACL "access control lists (ACLs)"
 .set I   "    "
 
+.set drivernamemax "64"
+
 .macro copyyear
 2020
 .endmacro
@@ -18802,6 +18804,11 @@ which the preconditions are tested. The order of expansion of the options that
 provide data for a transport is: &%errors_to%&, &%headers_add%&,
 &%headers_remove%&, &%transport%&.
 
+.new
+The name of a router is limited to be &drivernamemax; ASCII characters long;
+prior to Exim 4.95 names would be silently truncated at this length, but now
+it is enforced.
+.wen
 
 
 .option address_data routers string&!! unset
@@ -22345,6 +22352,12 @@ and &$original_domain$& is never set.
 .scindex IIDgenoptra1 "generic options" "transport"
 .scindex IIDgenoptra2 "options" "generic; for transports"
 .scindex IIDgenoptra3 "transport" "generic options for"
+.new
+The name of a transport is limited to be &drivernamemax; ASCII characters long;
+prior to Exim 4.95 names would be silently truncated at this length, but now
+it is enforced.
+.wen
+
 The following generic options apply to all transports:
 
 
@@ -27181,6 +27194,12 @@ permitted to use it as a relay. SMTP authentication is not of relevance to the
 transfer of mail between servers that have no managerial connection with each
 other.
 
+.new
+The name of an authenticator is limited to be &drivernamemax; ASCII characters long;
+prior to Exim 4.95 names would be silently truncated at this length, but now
+it is enforced.
+.wen
+
 .cindex "AUTH" "description of"
 .cindex "ESMTP extensions" AUTH
 Very briefly, the way SMTP authentication works is as follows: