rules/optional_rules/modsecurity_crs_42_tight_security.conf

   1 # ---------------------------------------------------------------
   2 # Core ModSecurity Rule Set ver.2.0.3
   3 # Copyright (C) 2006-2009 Breach Security Inc. All rights reserved.
   4 #
   5 # The ModSecuirty Core Rule Set is distributed under GPL version 2
   6 # Please see the enclosed LICENCE file for full details.
   7 # ---------------------------------------------------------------
   8
   9
  10 #
  11 #      This ruleset file contains rules that are highly prone to FPs
  12 #
  13 #      When installing this ruleset, you are advised to activate ModSecurity
  14 #      in DetectionOnly, and verify that this ruleset doesn't intercept too
  15 #      many legit requests.
  16 #
  17
  18 #
  19 # Directory Traversal
  20 #
  21 SecRule REQUEST_URI "(?:\x5c|(?:%(?:c(?:0%(?:9v|af)|1%1c)|2(?:5(?:2f|5c)|f)|u221[56]|1u|5c)|\/))(?:%(?:u2024|2e)|\.){2}(?:\x5c|(?:%(?:c(?:0%(?:9v|af)|1%1c)|2(?:5(?:2f|5c)|f)|u221[56]|1u|5c)|\/))" \
  22         "phase:1,t:none,t:lowercase,capture,ctl:auditLogParts=+E,block,nolog,auditlog,status:501,msg:'Path Traversal Attack',id:'950103',severity:'2',setvar:'tx.msg=%{rule.msg}',setvar:tx.anomaly_score=+15,setvar:'tx.%{rule.id}=%{matched_var_name}=%{matched_var}'"
  23
  24 # Weaker signature
  25 #SecRule REQUEST_FILENAME "\.\.[/\x5c]" "phase:1,t:none,t:urlDecodeUni,capture,ctl:auditLogParts=+E,block,nolog,auditlog,status:501,msg:'Path Traversal Attack',id:'950103',severity:'2',setvar:'tx.msg=%{rule.msg}',setvar:tx.anomaly_score=+15,setvar:'tx.%{rule.id}=%{matched_var_name}=%{matched_var}'"
  26
  27