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Update Core Rules to those in 2.1.4.

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brectanus
2007-12-14 23:23:46 +00:00
parent 4602f7d908
commit 3c4eacf6f1
17 changed files with 577 additions and 295 deletions
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42
rules/modsecurity_crs_20_protocol_violations.conf
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@@ -1,6 +1,6 @@
# ---------------------------------------------------------------
# Core ModSecurity Rule Set
# Copyright (C) 2006 Breach Security Inc. All rights reserved.
# Core ModSecurity Rule Set ver.1.5
# Copyright (C) 2006-2007 Breach Security Inc. All rights reserved.
#
# The ModSecuirty Core Rule Set is distributed under GPL version 2
# Please see the enclosed LICENCE file for full details.
@@ -21,35 +21,35 @@ SecDefaultAction "log,pass,phase:2,status:400"
# Validate request line
#
SecRule REQUEST_LINE "!^[a-z]{3,10}\s*(?:\w{3,7}?\:\/\/[\w\-\.\/]*)??\/[\w\-\.\/~%:@&=+$,;]*(?:\?[\S]*)??\s*http\/\d\.\d$" \
"t:none,t:lowercase,deny,log,auditlog,status:400,msg:'Invalid HTTP Request Line',,id:'960911',severity:'2'"
SecRule REQUEST_LINE "!^(?:[a-z]{3,10}\s+(?:\w{3,7}?://[\w\-\./]*(?::\d+))??/[^?#]*(?:\?[^#\s]*)?(?:#[\S]*)?|connect (?:\d{1,3}\.){3}\d{1,3}\.?(?::\d+)?|options \*)\s+[\w\./]+$" \
"t:none,t:lowercase,deny,log,auditlog,status:400,msg:'Invalid HTTP Request Line',id:'960911',severity:'2'"
# HTTP Request Smuggling
#
SecRule REQUEST_HEADERS:'/(Content-Length|Transfer-Encoding)/' "," "deny,log,auditlog,status:400,msg:'HTTP Request Smuggling Attack.',,id:'950012',severity:'1'"
SecRule REQUEST_HEADERS:'/(Content-Length|Transfer-Encoding)/' "," "deny,log,auditlog,status:400,msg:'HTTP Request Smuggling Attack.',id:'950012',severity:'1'"
# Block request with malformed content.
# ModSecurity will not inspect these, but the server application might do so
#
SecRule REQBODY_PROCESSOR_ERROR "!@eq 0" "t:none,deny,log,auditlog,status:400,msg:'Invalid request body',,id:'960912',severity:'2'"
SecRule REQBODY_PROCESSOR_ERROR "!@eq 0" "t:none,deny,log,auditlog,status:400,msg:'Request Body Parsing Failed. %{REQBODY_PROCESSOR_ERROR_MSG}',id:'960912',severity:'2'"
# Accept only digits in content length
#
SecRule REQUEST_HEADERS:Content-Length "!^\d+$" "deny,log,auditlog,status:400,msg:'Content-Length HTTP header is not numeric', severity:'2',,id:'960016',"
SecRule REQUEST_HEADERS:Content-Length "!^\d+$" "deny,log,auditlog,status:400,msg:'Content-Length HTTP header is not numeric', severity:'2',id:'960016'"
# Do not accept GET or HEAD requests with bodies
# HTTP standard allows GET requests to have a body but this
# feature is not used in real life. Attackers could try to force
# a request body on an unsuspecting web applications.
#
SecRule REQUEST_METHOD "^(?:GET|HEAD)$" "chain,deny,log,auditlog,status:400,msg:'GET or HEAD requests with bodies', severity:'2',,id:'960011',"
SecRule REQUEST_METHOD "^(?:GET|HEAD)$" "chain,deny,log,auditlog,status:400,msg:'GET or HEAD requests with bodies', severity:'2',id:'960011'"
SecRule REQUEST_HEADERS:Content-Length "!^0?$"
# Require Content-Length to be provided with every POST request.
#
SecRule REQUEST_METHOD "^POST$" "chain,deny,log,auditlog,status:400,msg:'POST request must have a Content-Length header',,id:'960012',severity:'4'"
SecRule REQUEST_METHOD "^POST$" "chain,deny,log,auditlog,status:400,msg:'POST request must have a Content-Length header',id:'960012',severity:'4'"
SecRule &REQUEST_HEADERS:Content-Length "@eq 0"
# Don't accept transfer encodings we know we don't know how to handle
@@ -57,23 +57,25 @@ SecRule &REQUEST_HEADERS:Content-Length "@eq 0"
# NOTE ModSecurity does not support chunked transfer encodings at
# this time. You MUST reject all such requests.
#
SecRule REQUEST_HEADERS:Transfer-Encoding "!^$" "deny,log,auditlog,status:501,msg:'ModSecurity does not support transfer encodings',,id:'960013',severity:'3'"
SecRule REQUEST_HEADERS:Transfer-Encoding "!^$" "deny,log,auditlog,status:501,msg:'ModSecurity does not support transfer encodings',id:'960013',severity:'3'"
# Check decodings
# Check encodings
SecRule REQUEST_FILENAME|ARGS|ARGS_NAMES|REQUEST_HEADERS|XML:/*|!REQUEST_HEADERS:Referer "@validateUrlEncoding" \
"chain, deny,log,auditlog,status:400,msg:'URL Encoding Abuse Attack Attempt',,id:'950107',severity:'4'"
"chain, deny,log,auditlog,status:400,msg:'URL Encoding Abuse Attack Attempt',id:'950107',severity:'4'"
SecRule REQUEST_FILENAME|ARGS|ARGS_NAMES|REQUEST_HEADERS|XML:/*|!REQUEST_HEADERS:Referer "\%(?!$|\W|[0-9a-fA-F]{2}|u[0-9a-fA-F]{4})"
SecRule REQUEST_FILENAME|ARGS|ARGS_NAMES|REQUEST_HEADERS|XML:/*|!REQUEST_HEADERS:Referer "@validateUtf8Encoding" "deny,log,auditlog,status:400,msg:'UTF8 Encoding Abuse Attack Attempt',,id:'950801',severity:'4'"
# Check UTF enconding
# Uncomment this rule if your system uses UTF encoding.
#SecRule REQUEST_FILENAME|ARGS|ARGS_NAMES|REQUEST_HEADERS|XML:/*|!REQUEST_HEADERS:Referer "@validateUtf8Encoding" "deny,log,auditlog,status:400,msg:'UTF8 Encoding Abuse Attack Attempt',id:'950801',severity:'4'"
# Disallow use of full-width unicode
SecRule REQUEST_FILENAME|ARGS|ARGS_NAMES|REQUEST_HEADERS|XML:/*|!REQUEST_HEADERS:Referer "\%u[fF]{2}[0-9a-fA-F]{2}" \
"t:none,deny,log,auditlog,status:400,msg:'Unicode Full/Half Width Abuse Attack Attempt',,id:'950116',severity:'4'"
"t:none,deny,log,auditlog,status:400,msg:'Unicode Full/Half Width Abuse Attack Attempt',id:'950116',severity:'4'"
# Proxy access attempt
# NOTE Apache blocks such access by default if not set as a proxy. The rule is
# included in case Apache proxy is misconfigured.
SecRule REQUEST_URI_RAW ^\w+:/ "deny,log,auditlog,status:400,msg:'Proxy access attempt', severity:'2',,id:'960014',"
SecRule REQUEST_URI_RAW ^\w+:/ "deny,log,auditlog,status:400,msg:'Proxy access attempt', severity:'2',id:'960014'"
#
# Restrict type of characters sent
@@ -81,14 +83,14 @@ SecRule REQUEST_URI_RAW ^\w+:/ "deny,log,auditlog,status:400,msg:'Proxy access a
# NOTE In order to be broad and support localized applications this rule
# only validates that NULL Is not used.
#
# The strict policy version also validates that protocol and application
# generated fields are limited to printable ASCII.
# The strict policy version also validates that protocol and application
# generated fields are limited to printable ASCII.
#
# TODO If your application use the range 32-126 for parameters.
#
SecRule REQUEST_FILENAME|REQUEST_HEADERS_NAMES|REQUEST_HEADERS|!REQUEST_HEADERS:Referer \
"@validateByteRange 1-255" \
"deny,log,auditlog,status:400,msg:'Invalid character in request',,id:'960018',severity:'4',t:urlDecodeUni"
"@validateByteRange 1-255" \
"deny,log,auditlog,status:400,msg:'Invalid character in request',id:'960018',severity:'4',t:urlDecodeUni"
SecRule ARGS|ARGS_NAMES|REQUEST_HEADERS:Referer "@validateByteRange 1-255" \
"deny,log,auditlog,status:400,msg:'Invalid character in request',,id:'960901',severity:'4',t:urlDecodeUni"
"deny,log,auditlog,status:400,msg:'Invalid character in request',id:'960901',severity:'4',t:urlDecodeUni"