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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
#!/bin/sh
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Generate a minimal mod-security configuration.
here=`echo "import os; print os.path.realpath('$0')" | python`; here=`dirname $here`
mkdir -p $1
root=`echo "import os; print os.path.realpath('$1')" | python`
modules_prefix=`cat $here/httpd-modules.prefix`
modsecurity_prefix=`cat $here/modsecurity.prefix`
mkdir -p $root/tmp
cat >>$root/conf/modules.conf <<EOF
# Generated by: mod-security-conf $*
# Load support for mod-security
LoadModule unique_id_module ${modules_prefix}/modules/mod_unique_id.so
LoadModule security2_module $modsecurity_prefix/lib/mod_security2.so
EOF
cat >>$root/conf/httpd.conf <<EOF
# Generated by: mod-security-conf $*
# Enable mod-security
Include conf/mod-security.conf
EOF
cat >$root/conf/mod-security.conf <<EOF
# Generated by: mod-security-conf $*
# Enable mod-security rules
SecRuleEngine On
SecDefaultAction "phase:2,pass,log"
#SecDebugLog $root/logs//modsec_debug_log
#SecDebugLogLevel 3
# Allow mod-security to access request bodies
SecRequestBodyAccess On
SecRule REQUEST_HEADERS:Content-Type "text/xml" "phase:1,t:none,t:lowercase,pass,nolog,ctl:requestBodyProcessor=XML"
SecRule REQUEST_HEADERS:Content-Type "application/xml" "phase:1,t:none,t:lowercase,pass,nolog,ctl:requestBodyProcessor=XML"
SecRequestBodyLimit 13107200
SecRequestBodyNoFilesLimit 131072
SecRequestBodyInMemoryLimit 131072
SecRequestBodyLimitAction Reject
# Verify that we've correctly processed the request body
SecRule REQBODY_ERROR "!@eq 0" "phase:2,t:none,log,deny,status:400,msg:'Failed to parse request body.',logdata:'%{reqbody_error_msg}',severity:2"
# By default be strict with what we accept in multipart/form-data request body
SecRule MULTIPART_STRICT_ERROR "!@eq 0" "phase:2,t:none,log,deny,status:44,msg:'Multipart request body failed strict validation: \
PE %{REQBODY_PROCESSOR_ERROR}, \
BQ %{MULTIPART_BOUNDARY_QUOTED}, \
BW %{MULTIPART_BOUNDARY_WHITESPACE}, \
DB %{MULTIPART_DATA_BEFORE}, \
DA %{MULTIPART_DATA_AFTER}, \
HF %{MULTIPART_HEADER_FOLDING}, \
LF %{MULTIPART_LF_LINE}, \
SM %{MULTIPART_SEMICOLON_MISSING}, \
IQ %{MULTIPART_INVALID_QUOTING}, \
IH %{MULTIPART_INVALID_HEADER_FOLDING}, \
IH %{MULTIPART_FILE_LIMIT_EXCEEDED}'"
# Did we see anything that might be a boundary?
SecRule MULTIPART_UNMATCHED_BOUNDARY "!@eq 0" "phase:2,t:none,log,deny,status:44,msg:'Multipart parser detected a possible unmatched boundary.'"
# Avoid a potential RegEx DoS condition
SecPcreMatchLimit 1000
SecPcreMatchLimitRecursion 1000
SecRule TX:/^MSC_/ "!@streq 0" "phase:2,t:none,deny,msg:'ModSecurity internal error flagged: %{MATCHED_VAR_NAME}'"
# Detect slow DoS attacks
SecRule RESPONSE_STATUS "@streq 408" "phase:5,t:none,nolog,pass, setvar:ip.slow_dos_counter=+1,expirevar:ip.slow_dos_counter=60"
SecRule IP:SLOW_DOS_COUNTER "@gt 5" "phase:1,t:none,log,drop, msg:'Client Connection Dropped due to high # of slow DoS alerts'"
SecWriteStateLimit 50
# Allow mod-security to access response bodies
SecResponseBodyAccess On
SecResponseBodyMimeType text/plain text/html text/xml application/xml
SecResponseBodyLimit 524288
SecResponseBodyLimitAction ProcessPartial
# The location where mod-security stores temporary files
SecTmpDir $root/tmp/
SecDataDir $root/tmp/
# Enable mod-security audit
SecAuditEngine RelevantOnly
SecAuditLogRelevantStatus "^(?:5|4(?!04))"
SecAuditLogParts ABIJDEFHKZ
SecAuditLogType Serial
SecAuditLog $root/logs/modsec_audit_log
# Use & as application/x-www-form-urlencoded parameter separator
SecArgumentSeparator &
# Settle on version 0 (zero) cookies.
SecCookieFormat 0
# Enable anomaly scoring
SecAction "phase:1,id:'981206',t:none,nolog,pass,setvar:tx.anomaly_score_blocking=on"
SecAction "phase:1,id:'981207',t:none,nolog,pass, \
setvar:tx.critical_anomaly_score=5, \
setvar:tx.error_anomaly_score=4, \
setvar:tx.warning_anomaly_score=3, \
setvar:tx.notice_anomaly_score=2"
SecAction "phase:1,id:'981208',t:none,nolog,pass,setvar:tx.inbound_anomaly_score_level=5"
SecAction "phase:1,id:'981209',t:none,nolog,pass,setvar:tx.outbound_anomaly_score_level=4"
# Paranoid mode
SecAction "phase:1,id:'981210',t:none,nolog,pass,setvar:tx.paranoid_mode=0"
# HTTP policy settings
SecAction "phase:1,id:'981211',t:none,nolog,pass,setvar:tx.max_num_args=255"
SecAction "phase:1,t:none,nolog,pass,setvar:tx.arg_name_length=100"
SecAction "phase:1,t:none,nolog,pass,setvar:tx.arg_length=400"
SecAction "phase:1,t:none,nolog,pass,setvar:tx.total_arg_length=64000"
SecAction "phase:1,t:none,nolog,pass,setvar:tx.max_file_size=1048576"
SecAction "phase:1,t:none,nolog,pass,setvar:tx.combined_file_sizes=1048576"
SecAction "phase:1,id:'981212',t:none,nolog,pass, \
setvar:'tx.allowed_methods=GET HEAD POST PUT OPTIONS DELETE CONNECT', \
setvar:'tx.allowed_request_content_type=application/x-www-form-urlencoded multipart/form-data text/xml application/xml application/json application/json-rpc application/atom+xml', \
setvar:'tx.allowed_http_versions=HTTP/0.9 HTTP/1.0 HTTP/1.1', \
setvar:'tx.restricted_extensions=.asa/ .asax/ .ascx/ .axd/ .backup/ .bak/ .bat/ .cdx/ .cer/ .cfg/ .cmd/ .com/ .config/ .conf/ .cs/ .csproj/ .csr/ .dat/ .db/ .dbf/ .dll/ .dos/ .htr/ .htw/ .ida/ .idc/ .idq/ .inc/ .ini/ .key/ .licx/ .lnk/ .log/ .mdb/ .old/ .pass/ .pdb/ .pol/ .printer/ .pwd/ .resources/ .resx/ .sql/ .sys/ .vb/ .vbs/ .vbproj/ .vsdisco/ .webinfo/ .xsd/ .xsx/', \
setvar:'tx.restricted_headers=/Proxy-Connection/ /Lock-Token/ /Content-Range/ /Translate/ /via/ /if/'"
# Brute force protection
SecAction "phase:1,id:'981214',t:none,nolog,pass, \
setvar:'tx.brute_force_protected_urls=/login', \
setvar:'tx.brute_force_burst_time_slice=60', \
setvar:'tx.brute_force_counter_threshold=10', \
setvar:'tx.brute_force_block_timeout=300'"
# DoS protection
SecAction "phase:1,id:'981215',t:none,nolog,pass, \
setvar:'tx.dos_burst_time_slice=60', \
setvar:'tx.dos_counter_threshold=100', \
setvar:'tx.dos_block_timeout=600'"
# Check UTF-8 encoding
SecAction "phase:1,id:'981216',t:none,nolog,pass,setvar:tx.crs_validate_utf8_encoding=1"
# Global and IP collections
SecRule REQUEST_HEADERS:User-Agent "^(.*)$" "phase:1,id:'981217',t:none,pass,nolog,t:sha1,t:hexEncode,setvar:tx.ua_hash=%{matched_var}"
SecRule REQUEST_HEADERS:x-forwarded-for "^\b(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\b" "phase:1,id:'981225',t:none,pass,nolog,capture,setvar:tx.real_ip=%{tx.1}"
SecRule &TX:REAL_IP "!@eq 0" "phase:1,id:'981226',t:none,pass,nolog,initcol:global=global,initcol:ip=%{tx.real_ip}_%{tx.ua_hash}"
SecRule &TX:REAL_IP "@eq 0" "phase:1,id:'981218',t:none,pass,nolog,initcol:global=global,initcol:ip=%{remote_addr}_%{tx.ua_hash}"
# Include all base mod-security CRS rules
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_20_protocol_violations.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_41_xss_attacks.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_50_outbound.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_35_bad_robots.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_47_common_exceptions.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_60_correlation.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_40_generic_attacks.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_21_protocol_anomalies.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_30_http_policy.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_49_inbound_blocking.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_41_sql_injection_attacks.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_45_trojans.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_59_outbound_blocking.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_23_request_limits.conf
Include ${modsecurity_prefix}/base_rules/modsecurity_crs_42_tight_security.conf
# Include some optional mod-security CRS rules
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_10_ignore_static.conf
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_13_xml_enabler.conf
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_25_cc_known.conf
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_42_comment_spam.conf
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_47_skip_outbound_checks.conf
Include ${modsecurity_prefix}/optional_rules/modsecurity_crs_55_application_defects.conf
EOF
|
