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Allow empty anchored variable to use #2024

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Allow empty anchored variable to use #2024

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5 changes: 1 addition & 4 deletions src/anchored_variable.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -110,7 +110,7 @@ void AnchoredVariable::append(const std::string &a, size_t offset,


void AnchoredVariable::evaluate(std::vector<const VariableValue *> *l) {
if (m_name.empty() || m_value.empty()) {
if (m_name.empty()) {
return;
}

Expand All @@ -121,9 +121,6 @@ void AnchoredVariable::evaluate(std::vector<const VariableValue *> *l) {


std::string * AnchoredVariable::evaluate() {
if (m_value.empty() == true) {
return NULL;
}
return &m_value;
}

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47 changes: 47 additions & 0 deletions test/test-cases/regression/rule-920200.json
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@@ -0,0 +1,47 @@
[
{
"enabled":1,
"version_min":300000,
"title":"Testing Byte ranges :: OWASP CRS id:920200",
"client":{
"ip":"200.249.12.31",
"port":123
},
"server":{
"ip":"200.249.12.31",
"port":80
},
"request":{
"headers":{
"Host":"localhost",
"User-Agent":"curl/7.38.0",
"Accept-Language":"en-us,en;q=0.5",
"Accept":"*/*",
"Keep-Alive":"300",
"Range": "bytes=1-10,11-20,21-30,31-40,41-50,51-60"
},
"uri":"/",
"method":"GET"
},
"response":{
"headers":{
"Date":"Mon, 13 Jul 2015 20:02:41 GMT",
"Last-Modified":"Sun, 26 Oct 2014 22:33:37 GMT",
"Content-Type":"text/html"
},
"body":[
"no need."
]
},
"expected":{
"http_code":400
},
"rules":[
"SecRuleEngine On",
"SecDefaultAction \"phase:2,deny,block,status:400,log\"",
"SecRule REQUEST_HEADERS:Range|REQUEST_HEADERS:Request-Range \"@rx ^bytes=(?:(?:\\d+)?\\-(?:\\d+)?\\s*,?\\s*){6}\" \"id:920200,phase:2,block,t:none,msg:'Range: Too many fields (6 or more)',logdata:'%{MATCHED_VAR}',tag:'application-multi',tag:'language-multi',tag:'platform-multi',tag:'attack-protocol',tag:'OWASP_CRS/PROTOCOL_VIOLATION/INVALID_HREQ',tag:'paranoia-level/2',ver:'OWASP_CRS/3.1.0',severity:'WARNING',chain",
"SecRule REQUEST_BASENAME \"!@endsWith .pdf\" \"setvar:'tx.msg=%{rule.msg}',setvar:'tx.anomaly_score_pl2=+%{tx.warning_anomaly_score}',setvar:'tx.%{rule.id}-OWASP_CRS/PROTOCOL_VIOLATION/INVALID_HREQ-%{MATCHED_VAR_NAME}=%{MATCHED_VAR}'\""
]
}
]