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# ------------------------------------------------------------------------ # OWASP ModSecurity Core Rule Set ver.3.0.2 # Copyright (c) 2006-2016 Trustwave and contributors. All rights reserved. # # The OWASP ModSecurity Core Rule Set is distributed under # Apache Software License (ASL) version 2 # Please see the enclosed LICENSE file for full details. # ------------------------------------------------------------------------ # # -= Paranoia Level 0 (empty) =- (apply unconditionally) # SecRule TX:PARANOIA_LEVEL "@lt 1" "phase:1,id:932011,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" SecRule TX:PARANOIA_LEVEL "@lt 1" "phase:2,id:932012,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" # # -= Paranoia Level 1 (default) =- (apply only when tx.paranoia_level is sufficiently high: 1 or higher) # # [ Unix command injection ] # # This rule detects Unix command injections. # A command injection takes a form such as: # # foo.jpg;uname -a # foo.jpg||uname -a # # The vulnerability exists when an application executes a shell command # without proper input escaping/validation. # # To prevent false positives, we look for a 'starting sequence' that # precedes a command in shell syntax, such as: ; | & $( ` <( >( # # This rule is case-sensitive to prevent FP ("Cat" vs. "cat"). # # An effort was made to combat evasions by shell quoting (e.g. 'ls', # 'l'"s", \l\s are all valid). ModSecurity has a t:cmdLine # transformation built-in to deal with this, but unfortunately, it # replaces ';' characters and lowercases the payload, which is less # useful for this case. However, emulating the transformation makes # the regexp more complex. # # To rebuild the word list regexp: # cd util/regexp-assemble # cat regexp-932100.txt | ./regexp-cmdline.py unix | ./regexp-assemble.pl # # Then insert the assembled regexp into this template: # # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?:;|\{|\||\|\||&|&&|\n|\r|\$\(|\$\(\(|`|\${|<\(|>\(|\(\s*\))\s*(?:{|\s*\(\s*|\w+=(?:[^\s]*|\$.*|\$.*|<.*|>.*|\'.*\'|\".*\")\s+|!\s*|\$)*\s*(?:'|\")*(?:[\?\*\[\]\(\)\-\|+\w'\"\./\\\\]+/)?[\\\\'\"]* # [regexp assembled from util/regexp-assemble/regexp-932100.txt] # \b" \ # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx 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\ "msg:'Remote Command Execution: Unix Command Injection',\ phase:request,\ rev:'4',\ ver:'OWASP_CRS/3.0.0',\ maturity:'8',\ accuracy:'8',\ capture,\ t:none,\ ctl:auditLogParts=+E,\ block,\ id:932100,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # Apache 2.2 requires configuration file lines to be under 8kB. # Therefore, some remaining commands have been split off to a separate rule. # For explanation of this rule, see rule 932100. # # To rebuild the word list regexp: # cd util/regexp-assemble # cat regexp-932105.txt | ./regexp-cmdline.py unix | ./regexp-assemble.pl # # Then insert the assembled regexp into this template: # # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?:;|\{|\||\|\||&|&&|\n|\r|\$\(|\$\(\(|`|\${|<\(|>\(|\(\s*\))\s*(?:{|\s*\(\s*|\w+=(?:[^\s]*|\$.*|\$.*|<.*|>.*|\'.*\'|\".*\")\s+|!\s*|\$)*\s*(?:'|\")*(?:[\?\*\[\]\(\)\-\|+\w'\"\./\\\\]+/)?[\\\\'\"]* # [regexp assembled from util/regexp-assemble/regexp-932105.txt] # \b" \ # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx 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\ "msg:'Remote Command Execution: Unix Command Injection',\ phase:request,\ rev:'4',\ ver:'OWASP_CRS/3.0.0',\ maturity:'8',\ accuracy:'8',\ capture,\ t:none,\ ctl:auditLogParts=+E,\ block,\ id:932105,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Windows command injection ] # # This rule detects Windows shell command injections. # If you are not running Windows, it is safe to disable this rule. # # A command injection takes a form such as: # # foo.jpg&ver /r # foo.jpg|ver /r # # The vulnerability exists when an application executes a shell command # without proper input escaping/validation. # # To prevent false positives, we look for a 'starting sequence' that # precedes a command in CMD syntax, such as: ; | & ` # # An effort is made to combat evasions by CMD syntax; for example, # the following strings are valid: c^md, @cmd, "c"md. ModSecurity # has a t:cmdLine transformation built-in to deal with some of these, # but unfortunately, that transformation replaces ';' characters (so # we cannot match on the start of a command) and '\' characters (so we # have trouble matching paths). This makes the regexp more complex. # # This rule is case-insensitive. # # To rebuild the word list regexp: # cd util/regexp-assemble # cat regexp-932110.txt | ./regexp-cmdline.py windows | ./regexp-assemble.pl # # Then insert the assembled regexp into this template: # # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:;|\{|\||\|\||&|&&|\n|\r|`)\s*[\(,@\'\"\s]*(?:[\w'\"\./]+/|[\\\\'\"\^]*\w[\\\\'\"\^]*:.*\\\\|[\^\.\w '\"/\\\\]*\\\\)?[\"\^]* # [regexp assembled from util/regexp-assemble/regexp-932110.txt] # (?:\.[\"\^]*\w+)?\b" \ # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:;|\{|\||\|\||&|&&|\n|\r|`)\s*[\(,@\'\"\s]*(?:[\w'\"\./]+/|[\\\\'\"\^]*\w[\\\\'\"\^]*:.*\\\\|[\^\.\w '\"/\\\\]*\\\\)?[\"\^]*(?:m[\"\^]*(?:y[\"\^]*s[\"\^]*q[\"\^]*l(?:[\"\^]*(?:d[\"\^]*u[\"\^]*m[\"\^]*p(?:[\"\^]*s[\"\^]*l[\"\^]*o[\"\^]*w)?|h[\"\^]*o[\"\^]*t[\"\^]*c[\"\^]*o[\"\^]*p[\"\^]*y|a[\"\^]*d[\"\^]*m[\"\^]*i[\"\^]*n|s[\"\^]*h[\"\^]*o[\"\^]*w))?|s[\"\^]*(?:i[\"\^]*(?:n[\"\^]*f[\"\^]*o[\"\^]*3[\"\^]*2|e[\"\^]*x[\"\^]*e[\"\^]*c)|c[\"\^]*o[\"\^]*n[\"\^]*f[\"\^]*i[\"\^]*g|g[\"\^]*(?:[\s,;]|\.|/|<|>).*|t[\"\^]*s[\"\^]*c)|o[\"\^]*(?:u[\"\^]*n[\"\^]*t[\"\^]*(?:(?:[\s,;]|\.|/|<|>).*|v[\"\^]*o[\"\^]*l)|v[\"\^]*e[\"\^]*u[\"\^]*s[\"\^]*e[\"\^]*r|[dr][\"\^]*e[\"\^]*(?:[\s,;]|\.|/|<|>).*)|k[\"\^]*(?:d[\"\^]*i[\"\^]*r[\"\^]*(?:[\s,;]|\.|/|<|>).*|l[\"\^]*i[\"\^]*n[\"\^]*k)|d[\"\^]*(?:s[\"\^]*c[\"\^]*h[\"\^]*e[\"\^]*d|(?:[\s,;]|\.|/|<|>).*)|a[\"\^]*p[\"\^]*i[\"\^]*s[\"\^]*e[\"\^]*n[\"\^]*d|b[\"\^]*s[\"\^]*a[\"\^]*c[\"\^]*l[\"\^]*i|e[\"\^]*a[\"\^]*s[\"\^]*u[\"\^]*r[\"\^]*e|m[\"\^]*s[\"\^]*y[\"\^]*s)|d[\"\^]*(?:i[\"\^]*(?:s[\"\^]*k[\"\^]*(?:(?:m[\"\^]*g[\"\^]*m|p[\"\^]*a[\"\^]*r)[\"\^]*t|s[\"\^]*h[\"\^]*a[\"\^]*d[\"\^]*o[\"\^]*w)|r[\"\^]*(?:(?:[\s,;]|\.|/|<|>).*|u[\"\^]*s[\"\^]*e)|f[\"\^]*f[\"\^]*(?:[\s,;]|\.|/|<|>).*)|e[\"\^]*(?:l[\"\^]*(?:p[\"\^]*r[\"\^]*o[\"\^]*f|t[\"\^]*r[\"\^]*e[\"\^]*e|(?:[\s,;]|\.|/|<|>).*)|v[\"\^]*(?:m[\"\^]*g[\"\^]*m[\"\^]*t|c[\"\^]*o[\"\^]*n)|(?:f[\"\^]*r[\"\^]*a|b[\"\^]*u)[\"\^]*g)|s[\"\^]*(?:a[\"\^]*(?:c[\"\^]*l[\"\^]*s|d[\"\^]*d)|q[\"\^]*u[\"\^]*e[\"\^]*r[\"\^]*y|m[\"\^]*o[\"\^]*(?:v[\"\^]*e|d)|g[\"\^]*e[\"\^]*t|r[\"\^]*m)|(?:r[\"\^]*i[\"\^]*v[\"\^]*e[\"\^]*r[\"\^]*q[\"\^]*u[\"\^]*e[\"\^]*r|o[\"\^]*s[\"\^]*k[\"\^]*e)[\"\^]*y|(?:c[\"\^]*o[\"\^]*m[\"\^]*c[\"\^]*n[\"\^]*f|x[\"\^]*d[\"\^]*i[\"\^]*a)[\"\^]*g|a[\"\^]*t[\"\^]*e[\"\^]*(?:[\s,;]|\.|/|<|>).*|n[\"\^]*s[\"\^]*s[\"\^]*t[\"\^]*a[\"\^]*t)|c[\"\^]*(?:o[\"\^]*(?:m[\"\^]*(?:p[\"\^]*(?:(?:a[\"\^]*c[\"\^]*t[\"\^]*)?(?:[\s,;]|\.|/|<|>).*|m[\"\^]*g[\"\^]*m[\"\^]*t)|e[\"\^]*x[\"\^]*p)|n[\"\^]*(?:2[\"\^]*p|v[\"\^]*e)[\"\^]*r[\"\^]*t|p[\"\^]*y)|l[\"\^]*(?:e[\"\^]*a[\"\^]*(?:n[\"\^]*m[\"\^]*g[\"\^]*r|r[\"\^]*m[\"\^]*e[\"\^]*m)|u[\"\^]*s[\"\^]*t[\"\^]*e[\"\^]*r)|h[\"\^]*(?:k[\"\^]*(?:n[\"\^]*t[\"\^]*f[\"\^]*s|d[\"\^]*s[\"\^]*k)|d[\"\^]*i[\"\^]*r[\"\^]*(?:[\s,;]|\.|/|<|>).*)|s[\"\^]*(?:c[\"\^]*(?:r[\"\^]*i[\"\^]*p[\"\^]*t|c[\"\^]*m[\"\^]*d)|v[\"\^]*d[\"\^]*e)|e[\"\^]*r[\"\^]*t[\"\^]*(?:u[\"\^]*t[\"\^]*i[\"\^]*l|r[\"\^]*e[\"\^]*q)|a[\"\^]*(?:l[\"\^]*l[\"\^]*(?:[\s,;]|\.|/|<|>).*|c[\"\^]*l[\"\^]*s)|m[\"\^]*d(?:[\"\^]*k[\"\^]*e[\"\^]*y)?|i[\"\^]*p[\"\^]*h[\"\^]*e[\"\^]*r|u[\"\^]*r[\"\^]*l)|f[\"\^]*(?:o[\"\^]*r[\"\^]*(?:m[\"\^]*a[\"\^]*t[\"\^]*(?:[\s,;]|\.|/|<|>).*|f[\"\^]*i[\"\^]*l[\"\^]*e[\"\^]*s|e[\"\^]*a[\"\^]*c[\"\^]*h)|i[\"\^]*n[\"\^]*d[\"\^]*(?:(?:[\s,;]|\.|/|<|>).*|s[\"\^]*t[\"\^]*r)|s[\"\^]*(?:m[\"\^]*g[\"\^]*m[\"\^]*t|u[\"\^]*t[\"\^]*i[\"\^]*l)|t[\"\^]*(?:p[\"\^]*(?:[\s,;]|\.|/|<|>).*|y[\"\^]*p[\"\^]*e)|r[\"\^]*e[\"\^]*e[\"\^]*d[\"\^]*i[\"\^]*s[\"\^]*k|c[\"\^]*(?:[\s,;]|\.|/|<|>).*|g[\"\^]*r[\"\^]*e[\"\^]*p)|n[\"\^]*(?:e[\"\^]*t[\"\^]*(?:s[\"\^]*(?:t[\"\^]*a[\"\^]*t|v[\"\^]*c|h)|(?:[\s,;]|\.|/|<|>).*|c[\"\^]*a[\"\^]*t|d[\"\^]*o[\"\^]*m)|t[\"\^]*(?:b[\"\^]*a[\"\^]*c[\"\^]*k[\"\^]*u[\"\^]*p|r[\"\^]*i[\"\^]*g[\"\^]*h[\"\^]*t[\"\^]*s)|(?:s[\"\^]*l[\"\^]*o[\"\^]*o[\"\^]*k[\"\^]*u|m[\"\^]*a)[\"\^]*p|c[\"\^]*(?:(?:[\s,;]|\.|/|<|>).*|a[\"\^]*t)|b[\"\^]*t[\"\^]*s[\"\^]*t[\"\^]*a[\"\^]*t)|e[\"\^]*(?:x[\"\^]*(?:p[\"\^]*(?:a[\"\^]*n[\"\^]*d[\"\^]*(?:[\s,;]|\.|/|<|>).*|l[\"\^]*o[\"\^]*r[\"\^]*e[\"\^]*r)|i[\"\^]*t)|v[\"\^]*e[\"\^]*n[\"\^]*t[\"\^]*(?:c[\"\^]*r[\"\^]*e[\"\^]*a[\"\^]*t[\"\^]*e|v[\"\^]*w[\"\^]*r)|n[\"\^]*d[\"\^]*l[\"\^]*o[\"\^]*c[\"\^]*a[\"\^]*l|g[\"\^]*r[\"\^]*e[\"\^]*p|r[\"\^]*a[\"\^]*s[\"\^]*e|c[\"\^]*h[\"\^]*o)|g[\"\^]*(?:a[\"\^]*t[\"\^]*h[\"\^]*e[\"\^]*r[\"\^]*n[\"\^]*e[\"\^]*t[\"\^]*w[\"\^]*o[\"\^]*r[\"\^]*k[\"\^]*i[\"\^]*n[\"\^]*f[\"\^]*o|p[\"\^]*(?:(?:r[\"\^]*e[\"\^]*s[\"\^]*u[\"\^]*l|e[\"\^]*d[\"\^]*i)[\"\^]*t|u[\"\^]*p[\"\^]*d[\"\^]*a[\"\^]*t[\"\^]*e)|i[\"\^]*t[\"\^]*(?:[\s,;]|\.|/|<|>).*|e[\"\^]*t[\"\^]*m[\"\^]*a[\"\^]*c)|i[\"\^]*(?:r[\"\^]*b(?:[\"\^]*(?:1(?:[\"\^]*[89])?|2[\"\^]*[012]))?|f[\"\^]*m[\"\^]*e[\"\^]*m[\"\^]*b[\"\^]*e[\"\^]*r|p[\"\^]*c[\"\^]*o[\"\^]*n[\"\^]*f[\"\^]*i[\"\^]*g|n[\"\^]*e[\"\^]*t[\"\^]*c[\"\^]*p[\"\^]*l|c[\"\^]*a[\"\^]*c[\"\^]*l[\"\^]*s)|a[\"\^]*(?:d[\"\^]*(?:d[\"\^]*u[\"\^]*s[\"\^]*e[\"\^]*r[\"\^]*s|m[\"\^]*o[\"\^]*d[\"\^]*c[\"\^]*m[\"\^]*d)|r[\"\^]*p[\"\^]*(?:[\s,;]|\.|/|<|>).*|t[\"\^]*t[\"\^]*r[\"\^]*i[\"\^]*b|s[\"\^]*s[\"\^]*o[\"\^]*c|z[\"\^]*m[\"\^]*a[\"\^]*n)|l[\"\^]*(?:o[\"\^]*g[\"\^]*(?:e[\"\^]*v[\"\^]*e[\"\^]*n[\"\^]*t|t[\"\^]*i[\"\^]*m[\"\^]*e|m[\"\^]*a[\"\^]*n|o[\"\^]*f[\"\^]*f)|a[\"\^]*b[\"\^]*e[\"\^]*l[\"\^]*(?:[\s,;]|\.|/|<|>).*|u[\"\^]*s[\"\^]*r[\"\^]*m[\"\^]*g[\"\^]*r)|b[\"\^]*(?:(?:c[\"\^]*d[\"\^]*(?:b[\"\^]*o[\"\^]*o|e[\"\^]*d[\"\^]*i)|r[\"\^]*o[\"\^]*w[\"\^]*s[\"\^]*t[\"\^]*a)[\"\^]*t|i[\"\^]*t[\"\^]*s[\"\^]*a[\"\^]*d[\"\^]*m[\"\^]*i[\"\^]*n|o[\"\^]*o[\"\^]*t[\"\^]*c[\"\^]*f[\"\^]*g)|h[\"\^]*(?:o[\"\^]*s[\"\^]*t[\"\^]*n[\"\^]*a[\"\^]*m[\"\^]*e|d[\"\^]*w[\"\^]*w[\"\^]*i[\"\^]*z)|j[\"\^]*a[\"\^]*v[\"\^]*a[\"\^]*(?:[\s,;]|\.|/|<|>).*|7[\"\^]*z(?:[\"\^]*[ar])?)(?:\.[\"\^]*\w+)?\b" \ "msg:'Remote Command Execution: Windows Command Injection',\ phase:request,\ rev:'4',\ ver:'OWASP_CRS/3.0.0',\ maturity:'9',\ accuracy:'8',\ capture,\ t:none,\ ctl:auditLogParts=+E,\ block,\ id:932110,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-windows',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # Apache 2.2 requires configuration file lines to be under 8kB. # Therefore, some remaining commands have been split off to a separate rule. # For explanation of this rule, see rule 932110. # # To rebuild the word list regexp: # cd util/regexp-assemble # cat regexp-932115.txt | ./regexp-cmdline.py windows | ./regexp-assemble.pl # # Then insert the assembled regexp into this template: # # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:;|\{|\||\|\||&|&&|\n|\r|`)\s*[\(,@\'\"\s]*(?:[\w'\"\./]+/|[\\\\'\"\^]*\w[\\\\'\"\^]*:.*\\\\|[\^\.\w '\"/\\\\]*\\\\)?[\"\^]* # [regexp assembled from util/regexp-assemble/regexp-932110.txt] # (?:\.[\"\^]*\w+)?\b" \ # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)(?:;|\{|\||\|\||&|&&|\n|\r|`)\s*[\(,@\'\"\s]*(?:[\w'\"\./]+/|[\\\\'\"\^]*\w[\\\\'\"\^]*:.*\\\\|[\^\.\w '\"/\\\\]*\\\\)?[\"\^]*(?:s[\"\^]*(?:y[\"\^]*s[\"\^]*(?:t[\"\^]*e[\"\^]*m[\"\^]*(?:p[\"\^]*r[\"\^]*o[\"\^]*p[\"\^]*e[\"\^]*r[\"\^]*t[\"\^]*i[\"\^]*e[\"\^]*s[\"\^]*(?:d[\"\^]*a[\"\^]*t[\"\^]*a[\"\^]*e[\"\^]*x[\"\^]*e[\"\^]*c[\"\^]*u[\"\^]*t[\"\^]*i[\"\^]*o[\"\^]*n[\"\^]*p[\"\^]*r[\"\^]*e[\"\^]*v[\"\^]*e[\"\^]*n[\"\^]*t[\"\^]*i[\"\^]*o[\"\^]*n|(?:p[\"\^]*e[\"\^]*r[\"\^]*f[\"\^]*o[\"\^]*r[\"\^]*m[\"\^]*a[\"\^]*n[\"\^]*c|h[\"\^]*a[\"\^]*r[\"\^]*d[\"\^]*w[\"\^]*a[\"\^]*r)[\"\^]*e|a[\"\^]*d[\"\^]*v[\"\^]*a[\"\^]*n[\"\^]*c[\"\^]*e[\"\^]*d)|i[\"\^]*n[\"\^]*f[\"\^]*o)|k[\"\^]*e[\"\^]*y|d[\"\^]*m)|h[\"\^]*(?:o[\"\^]*(?:w[\"\^]*(?:g[\"\^]*r[\"\^]*p|m[\"\^]*b[\"\^]*r)[\"\^]*s|r[\"\^]*t[\"\^]*c[\"\^]*u[\"\^]*t)|e[\"\^]*l[\"\^]*l[\"\^]*r[\"\^]*u[\"\^]*n[\"\^]*a[\"\^]*s|u[\"\^]*t[\"\^]*d[\"\^]*o[\"\^]*w[\"\^]*n|r[\"\^]*p[\"\^]*u[\"\^]*b[\"\^]*w|a[\"\^]*r[\"\^]*e|i[\"\^]*f[\"\^]*t)|e[\"\^]*(?:t[\"\^]*(?:(?:x[\"\^]*)?(?:[\s,;]|\.|/|<|>).*|l[\"\^]*o[\"\^]*c[\"\^]*a[\"\^]*l)|c[\"\^]*p[\"\^]*o[\"\^]*l|l[\"\^]*e[\"\^]*c[\"\^]*t)|c[\"\^]*(?:h[\"\^]*t[\"\^]*a[\"\^]*s[\"\^]*k[\"\^]*s|l[\"\^]*i[\"\^]*s[\"\^]*t)|u[\"\^]*b[\"\^]*(?:i[\"\^]*n[\"\^]*a[\"\^]*c[\"\^]*l|s[\"\^]*t)|t[\"\^]*a[\"\^]*r[\"\^]*t[\"\^]*(?:[\s,;]|\.|/|<|>).*|i[\"\^]*g[\"\^]*v[\"\^]*e[\"\^]*r[\"\^]*i[\"\^]*f|l[\"\^]*(?:e[\"\^]*e[\"\^]*p|m[\"\^]*g[\"\^]*r)|o[\"\^]*r[\"\^]*t|f[\"\^]*c|v[\"\^]*n)|p[\"\^]*(?:s[\"\^]*(?:s[\"\^]*(?:h[\"\^]*u[\"\^]*t[\"\^]*d[\"\^]*o[\"\^]*w[\"\^]*n|e[\"\^]*r[\"\^]*v[\"\^]*i[\"\^]*c[\"\^]*e|u[\"\^]*s[\"\^]*p[\"\^]*e[\"\^]*n[\"\^]*d)|l[\"\^]*(?:o[\"\^]*g[\"\^]*(?:g[\"\^]*e[\"\^]*d[\"\^]*o[\"\^]*n|l[\"\^]*i[\"\^]*s[\"\^]*t)|i[\"\^]*s[\"\^]*t)|p[\"\^]*(?:a[\"\^]*s[\"\^]*s[\"\^]*w[\"\^]*d|i[\"\^]*n[\"\^]*g)|g[\"\^]*e[\"\^]*t[\"\^]*s[\"\^]*i[\"\^]*d|e[\"\^]*x[\"\^]*e[\"\^]*c|f[\"\^]*i[\"\^]*l[\"\^]*e|i[\"\^]*n[\"\^]*f[\"\^]*o|k[\"\^]*i[\"\^]*l[\"\^]*l)|o[\"\^]*(?:w[\"\^]*e[\"\^]*r[\"\^]*(?:s[\"\^]*h[\"\^]*e[\"\^]*l[\"\^]*l(?:[\"\^]*_[\"\^]*i[\"\^]*s[\"\^]*e)?|c[\"\^]*f[\"\^]*g)|r[\"\^]*t[\"\^]*q[\"\^]*r[\"\^]*y|p[\"\^]*d)|r[\"\^]*(?:i[\"\^]*n[\"\^]*t[\"\^]*(?:(?:[\s,;]|\.|/|<|>).*|b[\"\^]*r[\"\^]*m)|n[\"\^]*(?:c[\"\^]*n[\"\^]*f[\"\^]*g|m[\"\^]*n[\"\^]*g[\"\^]*r)|o[\"\^]*m[\"\^]*p[\"\^]*t)|a[\"\^]*t[\"\^]*h[\"\^]*(?:p[\"\^]*i[\"\^]*n[\"\^]*g|(?:[\s,;]|\.|/|<|>).*)|e[\"\^]*r[\"\^]*(?:l(?:[\"\^]*(?:s[\"\^]*h|5))?|f[\"\^]*m[\"\^]*o[\"\^]*n)|y[\"\^]*t[\"\^]*h[\"\^]*o[\"\^]*n(?:[\"\^]*(?:3(?:[\"\^]*m)?|2))?|k[\"\^]*g[\"\^]*m[\"\^]*g[\"\^]*r|h[\"\^]*p(?:[\"\^]*[57])?|u[\"\^]*s[\"\^]*h[\"\^]*d|i[\"\^]*n[\"\^]*g)|r[\"\^]*(?:e[\"\^]*(?:(?:p[\"\^]*l[\"\^]*a[\"\^]*c[\"\^]*e|n(?:[\"\^]*a[\"\^]*m[\"\^]*e)?|s[\"\^]*e[\"\^]*t)[\"\^]*(?:[\s,;]|\.|/|<|>).*|g[\"\^]*(?:s[\"\^]*v[\"\^]*r[\"\^]*3[\"\^]*2|e[\"\^]*d[\"\^]*i[\"\^]*t|(?:[\s,;]|\.|/|<|>).*|i[\"\^]*n[\"\^]*i)|c[\"\^]*(?:d[\"\^]*i[\"\^]*s[\"\^]*c|o[\"\^]*v[\"\^]*e[\"\^]*r)|k[\"\^]*e[\"\^]*y[\"\^]*w[\"\^]*i[\"\^]*z)|u[\"\^]*(?:n[\"\^]*(?:d[\"\^]*l[\"\^]*l[\"\^]*3[\"\^]*2|a[\"\^]*s)|b[\"\^]*y[\"\^]*(?:1(?:[\"\^]*[89])?|2[\"\^]*[012]))|a[\"\^]*(?:s[\"\^]*(?:p[\"\^]*h[\"\^]*o[\"\^]*n[\"\^]*e|d[\"\^]*i[\"\^]*a[\"\^]*l)|r[\"\^]*(?:[\s,;]|\.|/|<|>).*)|m[\"\^]*(?:(?:d[\"\^]*i[\"\^]*r[\"\^]*)?(?:[\s,;]|\.|/|<|>).*|t[\"\^]*s[\"\^]*h[\"\^]*a[\"\^]*r[\"\^]*e)|o[\"\^]*(?:u[\"\^]*t[\"\^]*e[\"\^]*(?:[\s,;]|\.|/|<|>).*|b[\"\^]*o[\"\^]*c[\"\^]*o[\"\^]*p[\"\^]*y)|s[\"\^]*(?:t[\"\^]*r[\"\^]*u[\"\^]*i|y[\"\^]*n[\"\^]*c)|d[\"\^]*(?:[\s,;]|\.|/|<|>).*)|t[\"\^]*(?:a[\"\^]*(?:s[\"\^]*k[\"\^]*(?:k[\"\^]*i[\"\^]*l[\"\^]*l|l[\"\^]*i[\"\^]*s[\"\^]*t|s[\"\^]*c[\"\^]*h[\"\^]*d|m[\"\^]*g[\"\^]*r)|k[\"\^]*e[\"\^]*o[\"\^]*w[\"\^]*n)|(?:i[\"\^]*m[\"\^]*e[\"\^]*o[\"\^]*u|p[\"\^]*m[\"\^]*i[\"\^]*n[\"\^]*i|e[\"\^]*l[\"\^]*n[\"\^]*e|l[\"\^]*i[\"\^]*s)[\"\^]*t|s[\"\^]*(?:d[\"\^]*i[\"\^]*s[\"\^]*c[\"\^]*o|s[\"\^]*h[\"\^]*u[\"\^]*t[\"\^]*d)[\"\^]*n|y[\"\^]*p[\"\^]*e[\"\^]*(?:p[\"\^]*e[\"\^]*r[\"\^]*f|(?:[\s,;]|\.|/|<|>).*)|r[\"\^]*(?:a[\"\^]*c[\"\^]*e[\"\^]*r[\"\^]*t|e[\"\^]*e))|w[\"\^]*(?:i[\"\^]*n[\"\^]*(?:d[\"\^]*i[\"\^]*f[\"\^]*f|m[\"\^]*s[\"\^]*d[\"\^]*p|v[\"\^]*a[\"\^]*r|r[\"\^]*[ms])|u[\"\^]*(?:a[\"\^]*(?:u[\"\^]*c[\"\^]*l[\"\^]*t|p[\"\^]*p)|s[\"\^]*a)|s[\"\^]*c[\"\^]*(?:r[\"\^]*i[\"\^]*p[\"\^]*t|u[\"\^]*i)|e[\"\^]*v[\"\^]*t[\"\^]*u[\"\^]*t[\"\^]*i[\"\^]*l|m[\"\^]*i[\"\^]*(?:m[\"\^]*g[\"\^]*m[\"\^]*t|c)|a[\"\^]*i[\"\^]*t[\"\^]*f[\"\^]*o[\"\^]*r|h[\"\^]*o[\"\^]*a[\"\^]*m[\"\^]*i|g[\"\^]*e[\"\^]*t)|u[\"\^]*(?:s[\"\^]*(?:e[\"\^]*r[\"\^]*a[\"\^]*c[\"\^]*c[\"\^]*o[\"\^]*u[\"\^]*n[\"\^]*t[\"\^]*c[\"\^]*o[\"\^]*n[\"\^]*t[\"\^]*r[\"\^]*o[\"\^]*l[\"\^]*s[\"\^]*e[\"\^]*t[\"\^]*t[\"\^]*i[\"\^]*n[\"\^]*g[\"\^]*s|r[\"\^]*s[\"\^]*t[\"\^]*a[\"\^]*t)|n[\"\^]*(?:r[\"\^]*a[\"\^]*r|z[\"\^]*i[\"\^]*p))|q[\"\^]*(?:u[\"\^]*e[\"\^]*r[\"\^]*y[\"\^]*(?:[\s,;]|\.|/|<|>).*|p[\"\^]*r[\"\^]*o[\"\^]*c[\"\^]*e[\"\^]*s[\"\^]*s|w[\"\^]*i[\"\^]*n[\"\^]*s[\"\^]*t[\"\^]*a|g[\"\^]*r[\"\^]*e[\"\^]*p)|o[\"\^]*(?:d[\"\^]*b[\"\^]*c[\"\^]*(?:a[\"\^]*d[\"\^]*3[\"\^]*2|c[\"\^]*o[\"\^]*n[\"\^]*f)|p[\"\^]*e[\"\^]*n[\"\^]*f[\"\^]*i[\"\^]*l[\"\^]*e[\"\^]*s)|v[\"\^]*(?:o[\"\^]*l[\"\^]*(?:[\s,;]|\.|/|<|>).*|e[\"\^]*r[\"\^]*i[\"\^]*f[\"\^]*y)|x[\"\^]*c[\"\^]*(?:a[\"\^]*c[\"\^]*l[\"\^]*s|o[\"\^]*p[\"\^]*y)|z[\"\^]*i[\"\^]*p[\"\^]*(?:[\s,;]|\.|/|<|>).*)(?:\.[\"\^]*\w+)?\b" \ "msg:'Remote Command Execution: Windows Command Injection',\ phase:request,\ rev:'4',\ ver:'OWASP_CRS/3.0.0',\ maturity:'9',\ accuracy:'8',\ capture,\ t:none,\ ctl:auditLogParts=+E,\ block,\ id:932115,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-windows',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Windows PowerShell, cmdlets and options ] # # Detect some common PowerShell commands, cmdlets and options. # These commands should be relatively uncommon in normal text, but # potentially useful for code injection. # # If you are not running Windows, it is safe to disable this rule. # # https://technet.microsoft.com/en-us/magazine/ff714569.aspx # https://msdn.microsoft.com/en-us/powershell/scripting/core-powershell/console/powershell.exe-command-line-help # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@pmf windows-powershell-commands.data" \ "msg:'Remote Command Execution: Windows PowerShell Command Found',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'7',\ capture,\ t:none,t:urlDecodeUni,t:cmdLine,t:lowercase,\ ctl:auditLogParts=+E,\ block,\ id:932120,\ tag:'application-multi',\ tag:'language-shell',\ tag:'language-powershell',\ tag:'platform-windows',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Unix shell expressions ] # # Detects the following patterns which are common in Unix shell scripts # and oneliners: # # $(foo) Command substitution # ${foo} Parameter expansion # <(foo) Process substitution # >(foo) Process substitution # $((foo)) Arithmetic expansion # # Regexp generated from util/regexp-assemble/regexp-932130.data using Regexp::Assemble. # See http://blog.modsecurity.org/2007/06/optimizing-regu.html for usage. # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?:\$(?:\((?:\(.*\)|.*)\)|\{.*\})|[<>]\(.*\))" \ "msg:'Remote Command Execution: Unix Shell Expression Found',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'7',\ capture,\ t:none,t:urlDecodeUni,t:cmdLine,\ ctl:auditLogParts=+E,\ block,\ id:932130,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Windows FOR, IF commands ] # # This rule detects Windows command shell FOR and IF commands. # If you are not running Windows, it is safe to disable this rule. # # Examples: # # FOR %a IN (set) DO # FOR /D %a IN (dirs) DO # FOR /F "options" %a IN (text|"text") DO # FOR /L %a IN (start,step,end) DO # FOR /R C:\dir %A IN (set) DO # # IF [/I] [NOT] EXIST filename | DEFINED define | ERRORLEVEL n | CMDEXTVERSION n # IF [/I] [NOT] item1 [==|EQU|NEQ|LSS|LEQ|GTR|GEQ] item2 # IF [/I] [NOT] (item1) [==|EQU|NEQ|LSS|LEQ|GTR|GEQ] (item2) # # http://ss64.com/nt/if.html # http://ss64.com/nt/for.html # # Regexp generated from util/regexp-assemble/regexp-932140.data using Regexp::Assemble. # See http://blog.modsecurity.org/2007/06/optimizing-regu.html for usage. # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx \b(?:if(?:/i)?(?: not)?(?: exist\b| defined\b| errorlevel\b| cmdextversion\b|(?: |\().*(?:\bgeq\b|\bequ\b|\bneq\b|\bleq\b|\bgtr\b|\blss\b|==))|for(/[dflr].*)* %+[^ ]+ in\(.*\)\s?do)" \ "msg:'Remote Command Execution: Windows FOR/IF Command Found',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'7',\ capture,\ t:none,t:urlDecodeUni,t:cmdLine,\ ctl:auditLogParts=+E,\ block,\ id:932140,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-windows',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Unix direct remote command execution ] # # Detects Unix commands at the start of a parameter (direct RCE). # Example: foo=wget%20www.example.com # # This case is different from command injection (rule 932100), where a # command string is appended (injected) to a regular parameter, and then # passed to a shell unescaped. # # Due to a higher risk of false positives, the following changes have been # made relative to rule 932100: # 1) the set of commands is smaller # 2) we require a trailing space (denoting command parameters) or command # separator character after the command # # To rebuild the word list regexp: # cd util/regexp-assemble # cat regexp-932150.txt | ./regexp-cmdline.py unix | ./regexp-assemble.pl # # Then insert the assembled regexp into this template: # # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?:^|=)\s*(?:{|\s*\(\s*|\w+=(?:[^\s]*|\$.*|\$.*|<.*|>.*|\'.*\'|\".*\")\s+|!\s*|\$)*\s*(?:'|\")*(?:[\?\*\[\]\(\)\-\|+\w'\"\./\\\\]+/)?[\\\\'\"]* # [regexp assembled from util/regexp-assemble/regexp-932150.txt] # [\\\\'\"]*(?:\s|;|\||&|<|>)" \ # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?:^|=)\s*(?:{|\s*\(\s*|\w+=(?:[^\s]*|\$.*|\$.*|<.*|>.*|\'.*\'|\".*\")\s+|!\s*|\$)*\s*(?:'|\")*(?:[\?\*\[\]\(\)\-\|+\w'\"\./\\\\]+/)?[\\\\'\"]*(?:l[\\\\'\"]*(?:s(?:[\\\\'\"]*(?:b[\\\\'\"]*_[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*l[\\\\'\"]*e[\\\\'\"]*a[\\\\'\"]*s[\\\\'\"]*e|c[\\\\'\"]*p[\\\\'\"]*u|m[\\\\'\"]*o[\\\\'\"]*d|p[\\\\'\"]*c[\\\\'\"]*i|u[\\\\'\"]*s[\\\\'\"]*b|-[\\\\'\"]*F|o[\\\\'\"]*f))?|z[\\\\'\"]*(?:(?:[ef][\\\\'\"]*)?g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p|c[\\\\'\"]*(?:a[\\\\'\"]*t|m[\\\\'\"]*p)|m[\\\\'\"]*(?:o[\\\\'\"]*r[\\\\'\"]*e|a)|d[\\\\'\"]*i[\\\\'\"]*f[\\\\'\"]*f|l[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*s)|e[\\\\'\"]*s[\\\\'\"]*s[\\\\'\"]*(?:(?:f[\\\\'\"]*i[\\\\'\"]*l|p[\\\\'\"]*i[\\\\'\"]*p)[\\\\'\"]*e|e[\\\\'\"]*c[\\\\'\"]*h[\\\\'\"]*o)|a[\\\\'\"]*s[\\\\'\"]*t[\\\\'\"]*(?:l[\\\\'\"]*o[\\\\'\"]*g(?:[\\\\'\"]*i[\\\\'\"]*n)?|c[\\\\'\"]*o[\\\\'\"]*m[\\\\'\"]*m)|w[\\\\'\"]*p(?:[\\\\'\"]*-[\\\\'\"]*d[\\\\'\"]*o[\\\\'\"]*w[\\\\'\"]*n[\\\\'\"]*l[\\\\'\"]*o[\\\\'\"]*a[\\\\'\"]*d)?|f[\\\\'\"]*t[\\\\'\"]*p(?:[\\\\'\"]*g[\\\\'\"]*e[\\\\'\"]*t)?|y[\\\\'\"]*n[\\\\'\"]*x)|s[\\\\'\"]*(?:e[\\\\'\"]*(?:t[\\\\'\"]*(?:e[\\\\'\"]*n[\\\\'\"]*v|s[\\\\'\"]*i[\\\\'\"]*d)|n[\\\\'\"]*d[\\\\'\"]*m[\\\\'\"]*a[\\\\'\"]*i[\\\\'\"]*l|d)|h(?:[\\\\'\"]*\.[\\\\'\"]*d[\\\\'\"]*i[\\\\'\"]*s[\\\\'\"]*t[\\\\'\"]*r[\\\\'\"]*i[\\\\'\"]*b)?|o[\\\\'\"]*(?:u[\\\\'\"]*r[\\\\'\"]*c[\\\\'\"]*e|c[\\\\'\"]*a[\\\\'\"]*t)|t[\\\\'\"]*r[\\\\'\"]*i[\\\\'\"]*n[\\\\'\"]*g[\\\\'\"]*s|y[\\\\'\"]*s[\\\\'\"]*c[\\\\'\"]*t[\\\\'\"]*l|c[\\\\'\"]*(?:h[\\\\'\"]*e[\\\\'\"]*d|p)|d[\\\\'\"]*i[\\\\'\"]*f[\\\\'\"]*f|f[\\\\'\"]*t[\\\\'\"]*p|u[\\\\'\"]*d[\\\\'\"]*o|s[\\\\'\"]*h|v[\\\\'\"]*n)|p[\\\\'\"]*(?:t[\\\\'\"]*a[\\\\'\"]*r(?:[\\\\'\"]*(?:d[\\\\'\"]*i[\\\\'\"]*f[\\\\'\"]*f|g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p))?|y[\\\\'\"]*t[\\\\'\"]*h[\\\\'\"]*o[\\\\'\"]*n(?:[\\\\'\"]*(?:3(?:[\\\\'\"]*m)?|2))?|k[\\\\'\"]*(?:e[\\\\'\"]*x[\\\\'\"]*e[\\\\'\"]*c|i[\\\\'\"]*l[\\\\'\"]*l)|r[\\\\'\"]*i[\\\\'\"]*n[\\\\'\"]*t[\\\\'\"]*e[\\\\'\"]*n[\\\\'\"]*v|(?:g[\\\\'\"]*r[\\\\'\"]*e|f[\\\\'\"]*t)[\\\\'\"]*p|e[\\\\'\"]*r[\\\\'\"]*l(?:[\\\\'\"]*5)?|h[\\\\'\"]*p(?:[\\\\'\"]*[57])?|i[\\\\'\"]*n[\\\\'\"]*g)|n[\\\\'\"]*(?:c(?:[\\\\'\"]*(?:\.[\\\\'\"]*(?:t[\\\\'\"]*r[\\\\'\"]*a[\\\\'\"]*d[\\\\'\"]*i[\\\\'\"]*t[\\\\'\"]*i[\\\\'\"]*o[\\\\'\"]*n[\\\\'\"]*a[\\\\'\"]*l|o[\\\\'\"]*p[\\\\'\"]*e[\\\\'\"]*n[\\\\'\"]*b[\\\\'\"]*s[\\\\'\"]*d)|a[\\\\'\"]*t))?|e[\\\\'\"]*t[\\\\'\"]*(?:k[\\\\'\"]*i[\\\\'\"]*t[\\\\'\"]*-[\\\\'\"]*f[\\\\'\"]*t[\\\\'\"]*p|(?:s[\\\\'\"]*t|c)[\\\\'\"]*a[\\\\'\"]*t)|o[\\\\'\"]*h[\\\\'\"]*u[\\\\'\"]*p|p[\\\\'\"]*i[\\\\'\"]*n[\\\\'\"]*g|s[\\\\'\"]*t[\\\\'\"]*a[\\\\'\"]*t)|t[\\\\'\"]*(?:c[\\\\'\"]*(?:p[\\\\'\"]*(?:t[\\\\'\"]*r[\\\\'\"]*a[\\\\'\"]*c[\\\\'\"]*e[\\\\'\"]*r[\\\\'\"]*o[\\\\'\"]*u[\\\\'\"]*t[\\\\'\"]*e|i[\\\\'\"]*n[\\\\'\"]*g)|s[\\\\'\"]*h)|r[\\\\'\"]*a[\\\\'\"]*c[\\\\'\"]*e[\\\\'\"]*r[\\\\'\"]*o[\\\\'\"]*u[\\\\'\"]*t[\\\\'\"]*e(?:[\\\\'\"]*6)?|i[\\\\'\"]*m[\\\\'\"]*e(?:[\\\\'\"]*o[\\\\'\"]*u[\\\\'\"]*t)?|a[\\\\'\"]*(?:i[\\\\'\"]*l(?:[\\\\'\"]*f)?|r)|e[\\\\'\"]*l[\\\\'\"]*n[\\\\'\"]*e[\\\\'\"]*t)|r[\\\\'\"]*(?:e[\\\\'\"]*(?:p[\\\\'\"]*(?:l[\\\\'\"]*a[\\\\'\"]*c[\\\\'\"]*e|e[\\\\'\"]*a[\\\\'\"]*t)|a[\\\\'\"]*l[\\\\'\"]*p[\\\\'\"]*a[\\\\'\"]*t[\\\\'\"]*h|n[\\\\'\"]*a[\\\\'\"]*m[\\\\'\"]*e)|u[\\\\'\"]*b[\\\\'\"]*y(?:[\\\\'\"]*(?:1(?:[\\\\'\"]*[89])?|2[\\\\'\"]*[012]))?|m[\\\\'\"]*(?:u[\\\\'\"]*s[\\\\'\"]*e|d[\\\\'\"]*i)[\\\\'\"]*r|n[\\\\'\"]*a[\\\\'\"]*n[\\\\'\"]*o|s[\\\\'\"]*y[\\\\'\"]*n[\\\\'\"]*c|c[\\\\'\"]*p)|b[\\\\'\"]*(?:z[\\\\'\"]*(?:(?:[ef][\\\\'\"]*)?g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p|d[\\\\'\"]*i[\\\\'\"]*f[\\\\'\"]*f|l[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*s|m[\\\\'\"]*o[\\\\'\"]*r[\\\\'\"]*e|c[\\\\'\"]*a[\\\\'\"]*t)|s[\\\\'\"]*d[\\\\'\"]*(?:c[\\\\'\"]*a[\\\\'\"]*t|i[\\\\'\"]*f[\\\\'\"]*f|t[\\\\'\"]*a[\\\\'\"]*r)|u[\\\\'\"]*i[\\\\'\"]*l[\\\\'\"]*t[\\\\'\"]*i[\\\\'\"]*n|a[\\\\'\"]*s[\\\\'\"]*h)|m[\\\\'\"]*(?:y[\\\\'\"]*s[\\\\'\"]*q[\\\\'\"]*l[\\\\'\"]*(?:d[\\\\'\"]*u[\\\\'\"]*m[\\\\'\"]*p(?:[\\\\'\"]*s[\\\\'\"]*l[\\\\'\"]*o[\\\\'\"]*w)?|h[\\\\'\"]*o[\\\\'\"]*t[\\\\'\"]*c[\\\\'\"]*o[\\\\'\"]*p[\\\\'\"]*y|a[\\\\'\"]*d[\\\\'\"]*m[\\\\'\"]*i[\\\\'\"]*n|s[\\\\'\"]*h[\\\\'\"]*o[\\\\'\"]*w)|l[\\\\'\"]*o[\\\\'\"]*c[\\\\'\"]*a[\\\\'\"]*t[\\\\'\"]*e|a[\\\\'\"]*i[\\\\'\"]*l[\\\\'\"]*q)|u[\\\\'\"]*(?:n[\\\\'\"]*(?:c[\\\\'\"]*o[\\\\'\"]*m[\\\\'\"]*p[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*s|l[\\\\'\"]*z[\\\\'\"]*m[\\\\'\"]*a|a[\\\\'\"]*m[\\\\'\"]*e|r[\\\\'\"]*a[\\\\'\"]*r|s[\\\\'\"]*e[\\\\'\"]*t|z[\\\\'\"]*i[\\\\'\"]*p|x[\\\\'\"]*z)|s[\\\\'\"]*e[\\\\'\"]*r[\\\\'\"]*(?:(?:a[\\\\'\"]*d|m[\\\\'\"]*o)[\\\\'\"]*d|d[\\\\'\"]*e[\\\\'\"]*l))|x[\\\\'\"]*(?:z(?:[\\\\'\"]*(?:(?:[ef][\\\\'\"]*)?g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p|d[\\\\'\"]*(?:i[\\\\'\"]*f[\\\\'\"]*f|e[\\\\'\"]*c)|c[\\\\'\"]*(?:a[\\\\'\"]*t|m[\\\\'\"]*p)|l[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*s|m[\\\\'\"]*o[\\\\'\"]*r[\\\\'\"]*e))?|a[\\\\'\"]*r[\\\\'\"]*g[\\\\'\"]*s)|z[\\\\'\"]*(?:(?:(?:[ef][\\\\'\"]*)?g[\\\\'\"]*r[\\\\'\"]*e|i)[\\\\'\"]*p|c[\\\\'\"]*(?:a[\\\\'\"]*t|m[\\\\'\"]*p)|d[\\\\'\"]*i[\\\\'\"]*f[\\\\'\"]*f|l[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*s|m[\\\\'\"]*o[\\\\'\"]*r[\\\\'\"]*e|r[\\\\'\"]*u[\\\\'\"]*n|s[\\\\'\"]*h)|f[\\\\'\"]*(?:t[\\\\'\"]*p[\\\\'\"]*(?:s[\\\\'\"]*t[\\\\'\"]*a[\\\\'\"]*t[\\\\'\"]*s|w[\\\\'\"]*h[\\\\'\"]*o)|i[\\\\'\"]*l[\\\\'\"]*e[\\\\'\"]*t[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*t|e[\\\\'\"]*t[\\\\'\"]*c[\\\\'\"]*h|g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p)|c[\\\\'\"]*(?:o[\\\\'\"]*(?:m[\\\\'\"]*m[\\\\'\"]*a[\\\\'\"]*n[\\\\'\"]*d|p[\\\\'\"]*r[\\\\'\"]*o[\\\\'\"]*c)|u[\\\\'\"]*r[\\\\'\"]*l|s[\\\\'\"]*h|c)|e[\\\\'\"]*(?:g[\\\\'\"]*r[\\\\'\"]*e[\\\\'\"]*p|c[\\\\'\"]*h[\\\\'\"]*o|v[\\\\'\"]*a[\\\\'\"]*l|x[\\\\'\"]*e[\\\\'\"]*c|n[\\\\'\"]*v)|d[\\\\'\"]*(?:m[\\\\'\"]*e[\\\\'\"]*s[\\\\'\"]*g|a[\\\\'\"]*s[\\\\'\"]*h|i[\\\\'\"]*f[\\\\'\"]*f|o[\\\\'\"]*a[\\\\'\"]*s)|g[\\\\'\"]*(?:z[\\\\'\"]*(?:c[\\\\'\"]*a[\\\\'\"]*t|i[\\\\'\"]*p)|r[\\\\'\"]*e[\\\\'\"]*p|c[\\\\'\"]*c)|w[\\\\'\"]*(?:h[\\\\'\"]*o[\\\\'\"]*a[\\\\'\"]*m[\\\\'\"]*i|g[\\\\'\"]*e[\\\\'\"]*t|3[\\\\'\"]*m)|j[\\\\'\"]*(?:o[\\\\'\"]*b[\\\\'\"]*s[\\\\'\"]*\s[\\\\'\"]*-[\\\\'\"]*x|a[\\\\'\"]*v[\\\\'\"]*a)|i[\\\\'\"]*r[\\\\'\"]*b(?:[\\\\'\"]*(?:1(?:[\\\\'\"]*[89])?|2[\\\\'\"]*[012]))?|o[\\\\'\"]*n[\\\\'\"]*i[\\\\'\"]*n[\\\\'\"]*t[\\\\'\"]*r|h[\\\\'\"]*(?:e[\\\\'\"]*a[\\\\'\"]*d|u[\\\\'\"]*p)|v[\\\\'\"]*i[\\\\'\"]*(?:g[\\\\'\"]*r|p[\\\\'\"]*w)|G[\\\\'\"]*E[\\\\'\"]*T)[\\\\'\"]*(?:\s|;|\||&|<|>)" \ "msg:'Remote Command Execution: Direct Unix Command Execution',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'7',\ capture,\ t:none,\ ctl:auditLogParts=+E,\ block,\ id:932150,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Unix shell snippets ] # # Detect some common sequences found in shell commands and scripts. # # Some commands which were restricted in earlier rules due to FP, # have been added here with their full path, in order to catch some # cases where the full path is sent. # SecRule REQUEST_COOKIES|!REQUEST_COOKIES:/__utm/|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@pmf unix-shell.data" \ "msg:'Remote Command Execution: Unix Shell Code Found',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'8',\ capture,\ t:none,t:urlDecodeUni,t:cmdLine,t:normalizePath,t:lowercase,\ ctl:auditLogParts=+E,\ block,\ id:932160,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" # [ Shellshock vulnerability (CVE-2014-6271 and CVE-2014-7169) ] # # Detect exploitation of "Shellshock" GNU Bash RCE vulnerability. # # Based on ModSecurity rules created by Red Hat. # Permission for use was granted by Martin Prpic <secalert@redhat.com> # # https://access.redhat.com/articles/1212303 # SecRule REQUEST_HEADERS|REQUEST_LINE "^\(\s*\)\s+{" \ "msg:'Remote Command Execution: Shellshock (CVE-2014-6271)',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'9',\ capture,\ t:none,t:urlDecode,\ ctl:auditLogParts=+E,\ block,\ id:932170,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" SecRule ARGS_NAMES|ARGS|FILES_NAMES "^\(\s*\)\s+{" \ "msg:'Remote Command Execution: Shellshock (CVE-2014-6271)',\ phase:request,\ rev:'1',\ ver:'OWASP_CRS/3.0.0',\ maturity:'1',\ accuracy:'9',\ capture,\ t:none,t:urlDecode,t:urlDecodeUni,\ ctl:auditLogParts=+E,\ block,\ id:932171,\ tag:'application-multi',\ tag:'language-shell',\ tag:'platform-unix',\ tag:'attack-rce',\ tag:'OWASP_CRS/WEB_ATTACK/COMMAND_INJECTION',\ tag:'WASCTC/WASC-31',\ tag:'OWASP_TOP_10/A1',\ tag:'PCI/6.5.2',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ severity:'CRITICAL',\ setvar:'tx.msg=%{rule.msg}',\ setvar:tx.rce_score=+%{tx.critical_anomaly_score},\ setvar:tx.anomaly_score=+%{tx.critical_anomaly_score},\ setvar:tx.%{rule.id}-OWASP_CRS/WEB_ATTACK/RCE-%{matched_var_name}=%{tx.0}" SecRule TX:PARANOIA_LEVEL "@lt 2" "phase:1,id:932013,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" SecRule TX:PARANOIA_LEVEL "@lt 2" "phase:2,id:932014,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" # # -= Paranoia Level 2 =- (apply only when tx.paranoia_level is sufficiently high: 2 or higher) # SecRule TX:PARANOIA_LEVEL "@lt 3" "phase:1,id:932015,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" SecRule TX:PARANOIA_LEVEL "@lt 3" "phase:2,id:932016,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" # # -= Paranoia Level 3 =- (apply only when tx.paranoia_level is sufficiently high: 3 or higher) # SecRule TX:PARANOIA_LEVEL "@lt 4" "phase:1,id:932017,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" SecRule TX:PARANOIA_LEVEL "@lt 4" "phase:2,id:932018,nolog,pass,skipAfter:END-REQUEST-932-APPLICATION-ATTACK-RCE" # # -= Paranoia Level 4 =- (apply only when tx.paranoia_level is sufficiently high: 4 or higher) # # # -= Paranoia Levels Finished =- # SecMarker "END-REQUEST-932-APPLICATION-ATTACK-RCE"
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