/etc/snort/rules/tftp.rules is in snort-rules-default 2.9.6.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | # 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: tftp.rules,v 1.19.2.1.2.2 2005/07/22 19:19:54 mwatchinski Exp $
#-----------
# TFTP RULES
#-----------
#
# These signatures are based on TFTP traffic. These include malicious files
# that are distributed via TFTP.
#
# The last two signatures refer to generic GET and PUT via TFTP, which is
# generally frowned upon on most networks, but may be used in some enviornments
alert udp any any -> any 69 (msg:"TFTP GET filename overflow attempt"; content:"|00 01|"; depth:2; isdataat:100,relative; content:!"|00|"; within:100; reference:bugtraq,5328; reference:cve,2002-0813; classtype:attempted-admin; sid:1941; rev:9;)
alert udp any any -> any 69 (msg:"TFTP PUT filename overflow attempt"; content:"|00 02|"; depth:2; isdataat:100,relative; content:!"|00|"; within:100; reference:bugtraq,7819; reference:bugtraq,8505; reference:cve,2003-0380; classtype:attempted-admin; sid:2337; rev:8;)
alert udp any any -> any 69 (msg:"TFTP GET Admin.dll"; content:"|00 01|"; depth:2; content:"admin.dll"; offset:2; nocase; reference:url,www.cert.org/advisories/CA-2001-26.html; classtype:successful-admin; sid:1289; rev:4;)
alert udp any any -> any 69 (msg:"TFTP GET nc.exe"; content:"|00 01|"; depth:2; content:"nc.exe"; offset:2; nocase; classtype:successful-admin; sid:1441; rev:4;)
alert udp any any -> any 69 (msg:"TFTP GET shadow"; content:"|00 01|"; depth:2; content:"shadow"; offset:2; nocase; classtype:successful-admin; sid:1442; rev:4;)
alert udp any any -> any 69 (msg:"TFTP GET passwd"; content:"|00 01|"; depth:2; content:"passwd"; offset:2; nocase; classtype:successful-admin; sid:1443; rev:4;)
alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP parent directory"; content:".."; offset:2; reference:arachnids,137; reference:cve,1999-0183; reference:cve,2002-1209; classtype:bad-unknown; sid:519; rev:6;)
alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP root directory"; content:"|00 01|/"; depth:3; reference:arachnids,138; reference:cve,1999-0183; classtype:bad-unknown; sid:520; rev:5;)
alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP Put"; content:"|00 02|"; depth:2; reference:arachnids,148; reference:cve,1999-0183; classtype:bad-unknown; sid:518; rev:6;)
alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP Get"; content:"|00 01|"; depth:2; classtype:bad-unknown; sid:1444; rev:3;)
alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP NULL command attempt"; content:"|00 00|"; depth:2; reference:bugtraq,7575; classtype:bad-unknown; sid:2339; rev:2;)
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