# Copyright 2005 Sourcefire, Inc. All Rights Reserved.
# These rules are licensed under the GNU General Public License.
# Please see the file LICENSE in this directory for more details. 
# $Id: community-smtp.rules,v 1.3 2005/11/16 15:35:30 akirk Exp $

alert tcp $EXTERNAL_NET any -> $SMTP_SERVERS 25 (msg:"COMMUNITY SMTP Hydra Activity Detected"; flow:to_server,established; content:"hydra"; nocase; pcre:"/^(EH|HE)LO\s+hydra\x0D\x0A/smi"; reference:url,www.thc.org/releases.php; classtype:misc-attack; sid:100000167; rev:1;)
#Rule submitted by rmkml
alert tcp $EXTERNAL_NET any -> $SMTP_SERVERS 25 (msg:"COMMUNITY SMTP Gnu Mailman utf8 attachement access"; flow:to_server,established; content:"Content-Disposition|3A 20|attachement"; nocase; content:"filename|2A 3D|utf|2D|8"; nocase; content:"Content-Transfer-Encoding|3A 20|base64"; nocase; reference:bugtraq,15408; reference:cve,2005-3573; reference:url,www.osvdb.org/displayvuln.php?osvdb_id=20819; classtype:attempted-dos; sid:100000191; rev:1;)