# Copyright 2001-2005 Sourcefire, Inc. All Rights Reserved## This file may contain proprietary rules that were created, tested and# certified by Sourcefire, Inc. (the "VRT Certified Rules") as well as# rules that were created by Sourcefire and other third parties and# distributed under the GNU General Public License (the "GPL Rules").  The# VRT Certified Rules contained in this file are the property of# Sourcefire, Inc. Copyright 2005 Sourcefire, Inc. All Rights Reserved.# The GPL Rules created by Sourcefire, Inc. are the property of# Sourcefire, Inc. Copyright 2002-2005 Sourcefire, Inc. All Rights# Reserved.  All other GPL Rules are owned and copyrighted by their# respective owners (please see www.snort.org/contributors for a list of# owners and their respective copyrights).  In order to determine what# rules are VRT Certified Rules or GPL Rules, please refer to the VRT# Certified Rules License Agreement.### $Id: imap.rules,v 1.24.2.7.2.5 2005/06/15 23:02:33 mwatchinski Exp $#--------------# IMAP RULES#--------------alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP login literal buffer overflow attempt"; flow:established,to_server; content:"LOGIN"; nocase; pcre:"/\sLOGIN\s[^\n]*?\s\{/smi"; byte_test:5,>,256,0,string,dec,relative; reference:bugtraq,6298; classtype:misc-attack; sid:1993; rev:4;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP login buffer overflow attempt"; flow:established,to_server; content:"LOGIN"; isdataat:100,relative; pcre:"/\sLOGIN\s[^\n]{100}/smi"; reference:bugtraq,13727; reference:bugtraq,502; reference:cve,1999-0005; reference:cve,1999-1557; reference:cve,2005-1255; reference:nessus,10123; reference:nessus,10125; classtype:attempted-user; sid:1842; rev:14;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP authenticate literal overflow attempt"; flow:established,to_server; content:"AUTHENTICATE"; nocase; pcre:"/\sAUTHENTICATE\s[^\n]*?\{/smi"; byte_test:5,>,256,0,string,dec,relative; reference:cve,1999-0042; reference:nessus,10292; classtype:misc-attack; sid:2105; rev:5;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP authenticate overflow attempt"; flow:established,to_server; content:"AUTHENTICATE"; nocase; isdataat:100,relative; pcre:"/\sAUTHENTICATE\s[^\n]{100}/smi"; reference:bugtraq,12995; reference:bugtraq,130; reference:cve,1999-0005; reference:cve,1999-0042; reference:nessus,10292; classtype:misc-attack; sid:1844; rev:11;)# auth is an imap2 function and only accepts literal usagealert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP auth literal overflow attempt"; flow:established,to_server; content:"AUTH"; nocase; pcre:"/({(?=\d+}[^\n]*?\sAUTH)|AUTH\s[^\n]*?{(?=\d+}))/smi"; byte_test:5,>,256,0,string,dec,relative; reference:cve,1999-0005; classtype:misc-attack; sid:1930; rev:5;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP auth overflow attempt"; flow:established,to_server; content:"AUTH"; nocase; pcre:"/AUTH\s[^\n]{100}/smi"; reference:bugtraq,8861; classtype:misc-attack; sid:2330; rev:1;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP lsub literal overflow attempt"; flow:to_server,established; content:"LSUB"; nocase; pcre:"/\sLSUB\s[^\n]*?\s\{/smi"; byte_test:5,>,256,0,string,dec,relative; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:1902; rev:9;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP lsub overflow attempt"; flow:to_server,established; content:"LSUB"; isdataat:100,relative; pcre:"/\sLSUB\s[^\n]{100}/smi"; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:2106; rev:7;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP list literal overflow attempt"; flow:established,to_server; content:"LIST"; nocase; pcre:"/\sLIST\s[^\n]*?\s\{/smi"; byte_test:5,>,256,0,string,dec,relative; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:1845; rev:15;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP list overflow attempt"; flow:established,to_server; content:"LIST"; nocase; isdataat:100,relative; pcre:"/\sLIST\s[^\n]{100}/smi"; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:2118; rev:6;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP rename literal overflow attempt"; flow:established,to_server; content:"RENAME"; nocase; pcre:"/\sRENAME\s[^\n]*?\s\{/smi"; byte_test:5,>,256,0,string,dec,relative; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:2119; rev:5;)alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP rename overflow attempt"; flow:established,to_server; content:"RENAME"; nocase; isdataat:100,relative; pcre:"/\sRENAME\s[^\n]{100}/smi"; reference:bugtraq,1110; reference:cve,2000-0284; reference:nessus,10374; classtype:misc-attack; sid:1903; rev:8;)# FIND does not accept a literal command