flowbits: file.dcr

[waldo kitty <wkitty42 () windstream net>]

there is no check rule in the *.rules files for flowbits: file.dcr...

additionally, both existing rules' MSG are identical... one should speak of "to 
client" and the other "to SMTP server" in the MSG for clarity??


registered subscriber using latest rules pulled 26 May 2013 for

    ,,_     -*> Snort! <*-
   o"  )~   Version 2.9.4.1 GRE (Build 69)
    ''''    By Martin Roesch & The Snort Team: http://www.snort.org/snort/snort-team
            Copyright (C) 1998-2013 Sourcefire, Inc., et al.
            Using libpcap version 1.1.1
            Using PCRE version: 7.8 2008-09-05
            Using ZLIB version: 1.2.6



May 26 04:25:44 frodo snort[22314]: WARNING: flowbits key 'file.dcr' is set but 
not ever checked.


$ grep -E "file.dcr" /path/to/snort/*rules*/*.rules

/path/to/snort/rules/file-identify.rules:alert tcp $EXTERNAL_NET 
$FILE_DATA_PORTS -> $HOME_NET any (msg:"FILE-IDENTIFY Adobe Director Movie file 
magic detected"; flow:to_client,established; file_data; content:"Shockwave 3D"; 
fast_pattern:only; content:"XFIR"; depth:4; flowbits:set,file.dir; 
flowbits:set,file.dcr; flowbits:noalert; metadata:service http, service imap, 
service pop3; reference:url,www.fileinfo.com/extension/dir; 
classtype:misc-activity; sid:17801; rev:13;)

/path/to/snort/rules/file-identify.rules:alert tcp $EXTERNAL_NET any -> 
$SMTP_SERVERS 25 (msg:"FILE-IDENTIFY Adobe Director Movie file magic detected"; 
flow:to_server,established; file_data; content:"Shockwave 3D"; 
fast_pattern:only; content:"XFIR"; depth:4; flowbits:set,file.dir; 
flowbits:set,file.dcr; flowbits:noalert; metadata:service smtp; 
reference:url,www.fileinfo.com/extension/dir; classtype:misc-activity; 
sid:23724; rev:4;)

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