update

[exim-website.git] / system_filter.exim

diff --git a/system_filter.exim b/system_filter.exim
index 4aab7eb4dc2f836026f2a2e7dbb192aaeab8d1b2..0f146605f09fb7043a3e367e142b8541241f6436 100644 (file)
--- a/system_filter.exim
+++ b/system_filter.exim
@@ -1,6 +1,6 @@
 # Exim filter
 # Exim filter

-## Version: 0.14
-#      $Id: system_filter.exim,v 1.6 2001/08/15 10:02:33 nigel Exp $
+## Version: 0.16
+#      $Id: system_filter.exim,v 1.8 2001/09/19 10:20:22 nigel Exp $

 
 ## Exim system filter to refuse potentially harmful payloads in
 ## mail messages
 
 ## Exim system filter to refuse potentially harmful payloads in
 ## mail messages


@@ -80,7 +80,7 @@ endif
 ## -----------------------------------------------------------------------
 # Look for single part MIME messages with suspicious name extensions
 # Check Content-Type header using quoted filename [content_type_quoted_fn_match]
 ## -----------------------------------------------------------------------
 # Look for single part MIME messages with suspicious name extensions
 # Check Content-Type header using quoted filename [content_type_quoted_fn_match]

-if $header_content-type: matches "(?:file)?name=(\"[^\"]+\\\\.(?:vb[se]|ws[fh]|jse?|exe|com|cmd|shs|hta|bat|scr|lnk|pif)\")"
+if $header_content-type: matches "(?:file)?name=(\"[^\"]+\\\\.(?:ad[ep]|ba[st]|chm|cmd|com|cpl|crt|eml|exe|hlp|hta|in[fs]|isp|jse?|lnk|md[be]|ms[cipt]|pcd|pif)|reg|scr|sct|shs|url|vb[se]|ws[fhc])\")"

 then
   fail text "This message has been rejected because it has\n\
             potentially executable content $1\n\
 then
   fail text "This message has been rejected because it has\n\
             potentially executable content $1\n\


@@ -91,7 +91,7 @@ then
   seen finish
 endif
 # same again using unquoted filename [content_type_unquoted_fn_match]
   seen finish
 endif
 # same again using unquoted filename [content_type_unquoted_fn_match]

-if $header_content-type: matches "(?:file)?name=(.+\\\\.(?:vb[se]|ws[fh]|jse?|exe|com|cmd|shs|hta|bat|scr|lnk|pif))"
+if $header_content-type: matches "(?:file)?name=(\\\\S+\\\\.(?:ad[ep]|ba[st]|chm|cmd|com|cpl|crt|eml|exe|hlp|hta|in[fs]|isp|jse?|lnk|md[be]|ms[cipt]|pcd|pif)|reg|scr|sct|shs|url|vb[se]|ws[fhc]))"

 then
   fail text "This message has been rejected because it has\n\
             potentially executable content $1\n\
 then
   fail text "This message has been rejected because it has\n\
             potentially executable content $1\n\


@@ -108,7 +108,7 @@ endif
 # in emails.   These were used as the basis for 
 # the ILOVEYOU virus and its variants - many many varients
 # Quoted filename - [body_quoted_fn_match]
 # in emails.   These were used as the basis for 
 # the ILOVEYOU virus and its variants - many many varients
 # Quoted filename - [body_quoted_fn_match]

-if $message_body matches "(?:Content-(?:Type:(?>\\\\s*)[\\\\w-]+/[\\\\w-]+|Disposition:(?>\\\\s*)attachment);(?>\\\\s*)(?:file)?name=|begin(?>\\\\s+)[0-7]{3,4}(?>\\\\s+))(\"[^\"]+\\\\.(?:vb[se]|ws[fh]|jse?|exe|com|cmd|shs|hta|bat|scr|lnk|pif)\")[\\\\s;]"
+if $message_body matches "(?:Content-(?:Type:(?>\\\\s*)[\\\\w-]+/[\\\\w-]+|Disposition:(?>\\\\s*)attachment);(?>\\\\s*)(?:file)?name=|begin(?>\\\\s+)[0-7]{3,4}(?>\\\\s+))(\"[^\"]+\\\\.(?:ad[ep]|ba[st]|chm|cmd|com|cpl|crt|eml|exe|hlp|hta|in[fs]|isp|jse?|lnk|md[be]|ms[cipt]|pcd|pif)|reg|scr|sct|shs|url|vb[se]|ws[fhc])\")[\\\\s;]"

 then
   fail text "This message has been rejected because it has\n\
             a potentially executable attachment $1\n\
 then
   fail text "This message has been rejected because it has\n\
             a potentially executable attachment $1\n\


@@ -119,7 +119,7 @@ then
   seen finish
 endif
 # same again using unquoted filename [body_unquoted_fn_match]
   seen finish
 endif
 # same again using unquoted filename [body_unquoted_fn_match]

-if $message_body matches "(?:Content-(?:Type:(?>\\\\s*)[\\\\w-]+/[\\\\w-]+|Disposition:(?>\\\\s*)attachment);(?>\\\\s*)(?:file)?name=|begin(?>\\\\s+)[0-7]{3,4}(?>\\\\s+))(.+\\\\.(?:vb[se]|ws[fh]|jse?|exe|com|cmd|shs|hta|bat|scr|lnk|pif))[\\\\s;]"
+if $message_body matches "(?:Content-(?:Type:(?>\\\\s*)[\\\\w-]+/[\\\\w-]+|Disposition:(?>\\\\s*)attachment);(?>\\\\s*)(?:file)?name=|begin(?>\\\\s+)[0-7]{3,4}(?>\\\\s+))(\\\\S+\\\\.(?:ad[ep]|ba[st]|chm|cmd|com|cpl|crt|eml|exe|hlp|hta|in[fs]|isp|jse?|lnk|md[be]|ms[cipt]|pcd|pif)|reg|scr|sct|shs|url|vb[se]|ws[fhc]))[\\\\s;]"

 then
   fail text "This message has been rejected because it has\n\
             a potentially executable attachment $1\n\
 then
   fail text "This message has been rejected because it has\n\
             a potentially executable attachment $1\n\


@@ -172,6 +172,10 @@ endif
 #      library files, cutting down on manual duplication.
 #      Changed \w in filename detection to . - dodges locale problems
 #      Explicit application of GPL after queries on license status
 #      library files, cutting down on manual duplication.
 #      Changed \w in filename detection to . - dodges locale problems
 #      Explicit application of GPL after queries on license status

+# 0.15 17 August, 2001
+#      Changed the . in filename detect to \S (stops it going mad)
+# 0.16 19 September, 2001
+#      Pile of new extensions including the eml in current use

 #
 #### Install Notes
 #
 #
 #### Install Notes
 #


@@ -225,18 +229,32 @@ endif
 #        (?:file)?name=                                # filename=/name= 
 #        |begin (?>\s+) [0-7]{3,4} (?>\s+))            # begin octal-mode
 #        (\"[^\"]+\.                                   # quoted filename.
 #        (?:file)?name=                                # filename=/name= 
 #        |begin (?>\s+) [0-7]{3,4} (?>\s+))            # begin octal-mode
 #        (\"[^\"]+\.                                   # quoted filename.

-#              (?:vb[se]                               # list of extns
-#              |ws[fh]
-#              |jse?
-#              |exe
-#              |com
+#              (?:ad[ep]                               # list of extns
+#              |ba[st]
+#              |chm

 #              |cmd
 #              |cmd

-#              |shs
+#              |com
+#              |cpl
+#              |crt
+#              |eml
+#              |exe
+#              |hlp

 #              |hta
 #              |hta

-#              |bat
-#              |scr
+#              |in[fs]
+#              |isp
+#              |jse?

 #              |lnk
 #              |lnk

+#              |md[be]
+#              |ms[cipt]
+#              |pcd

 #              |pif)
 #              |pif)

+#              |reg
+#              |scr
+#              |sct
+#              |shs
+#              |url
+#              |vb[se]
+#              |ws[fhc])

 #        \"                                            # end quote
 #        )                                             # end of filename capture
 #        [\s;]                                         # trailing ;/space/newline
 #        \"                                            # end quote
 #        )                                             # end of filename capture
 #        [\s;]                                         # trailing ;/space/newline