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feat: add support for case sensitive args (#1059)
* feat: add support for case sensitive args Signed-off-by: Felipe Zipitria <felipe.zipitria@owasp.org> * Change args names to be case sensitive tag (#1065) * feat: adds build tag for case sensitive args keys. * chore: updates license year. * Update README with new build tag --------- Signed-off-by: Felipe Zipitria <felipe.zipitria@owasp.org> Co-authored-by: José Carlos Chávez <jcchavezs@gmail.com> Co-authored-by: Matteo Pace <pace.matteo96@gmail.com>
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May 28, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| // Copyright 2024 Juan Pablo Tosso and the OWASP Coraza contributors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| //go:build coraza.rule.case_sensitive_args_keys | ||
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| package corazawaf | ||
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| var shouldUseCaseSensitiveNamedCollection = true |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| // Copyright 2024 Juan Pablo Tosso and the OWASP Coraza contributors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| //go:build !coraza.rule.case_sensitive_args_keys | ||
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| package corazawaf | ||
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| var shouldUseCaseSensitiveNamedCollection = false |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| // Copyright 2024 Juan Pablo Tosso and the OWASP Coraza contributors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| //go:build coraza.rule.case_sensitive_args_keys | ||
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| package corazawaf | ||
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| import ( | ||
| "testing" | ||
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| "github.com/corazawaf/coraza/v3/types/variables" | ||
| ) | ||
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| func TestCaseSensitiveArgsVariableKeys(t *testing.T) { | ||
| rule := NewRule() | ||
| if err := rule.AddVariable(variables.ArgsGet, "Som3ThinG", false); err != nil { | ||
| t.Error(err) | ||
| } | ||
| if rule.variables[0].KeyStr != "Som3ThinG" { | ||
| t.Error("variable key is not case insensitive") | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| // Copyright 2024 Juan Pablo Tosso and the OWASP Coraza contributors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| //go:build coraza.rule.case_sensitive_args_keys | ||
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| package seclang | ||
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| import ( | ||
| "testing" | ||
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| "github.com/corazawaf/coraza/v3/internal/corazawaf" | ||
| ) | ||
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| func TestCaseSensitiveRuleMatchRegex(t *testing.T) { | ||
| waf := corazawaf.NewWAF() | ||
| parser := NewParser(waf) | ||
| err := parser.FromString(` | ||
| SecRuleEngine On | ||
| SecRule ARGS:/^Key/ "@streq my-value" "id:1028,phase:1,deny,status:403,msg:'ARGS:key matched.'" | ||
| `) | ||
| if err != nil { | ||
| t.Error(err.Error()) | ||
| } | ||
| tx := waf.NewTransaction() | ||
| tx.ProcessURI("https://asdf.com/index.php?t1=aaa&T1=zzz&t2=bbb&t3=ccc&Keyless=my-value&a=test&jsessionid=74B0CB414BD77D17B5680A6386EF1666", "GET", "HTTP/1.1") | ||
| tx.ProcessConnection("127.0.0.1", 0, "", 0) | ||
| tx.ProcessRequestHeaders() | ||
| if len(tx.MatchedRules()) != 1 { | ||
| t.Errorf("failed to match rules with %d", len(tx.MatchedRules())) | ||
| } | ||
| if tx.Interruption() == nil { | ||
| t.Fatal("failed to interrupt transaction") | ||
| } | ||
| } | ||
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| func TestCaseSensitiveArguments(t *testing.T) { | ||
| waf := corazawaf.NewWAF() | ||
| rules := `SecRule ARGS:Test1 "Xyz" "id:3, phase:2, log, deny"` | ||
| parser := NewParser(waf) | ||
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| err := parser.FromString(rules) | ||
| if err != nil { | ||
| t.Error() | ||
| return | ||
| } | ||
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| tx := waf.NewTransaction() | ||
| tx.ProcessRequestHeaders() | ||
| tx.AddPostRequestArgument("Test1", "Xyz") | ||
| it, err := tx.ProcessRequestBody() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
| if it == nil { | ||
| t.Errorf("failed to test arguments value match: Same case argument name, %+v\n", tx.MatchedRules()) | ||
| } | ||
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| tx = waf.NewTransaction() | ||
| tx.ProcessRequestHeaders() | ||
| tx.AddPostRequestArgument("TEST1", "Xyz") | ||
| it, err = tx.ProcessRequestBody() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
| if it != nil { | ||
| t.Errorf("failed to test arguments value match: argument is matching a different case, %+v\n", tx.MatchedRules()) | ||
| } | ||
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| tx = waf.NewTransaction() | ||
| tx.ProcessRequestHeaders() | ||
| tx.AddPostRequestArgument("Test1", "XYZ") | ||
| it, err = tx.ProcessRequestBody() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
| if it != nil { | ||
| t.Errorf("failed to test arguments value match: argument is matching a different case, %+v\n", tx.MatchedRules()) | ||
| } | ||
| } | ||
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| func TestCaseSensitiveURIQueryParam(t *testing.T) { | ||
| waf := corazawaf.NewWAF() | ||
| rules := `SecRule ARGS:Test1 "@contains SQLI" "id:3, phase:2, log, pass"` | ||
| parser := NewParser(waf) | ||
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| err := parser.FromString(rules) | ||
| if err != nil { | ||
| t.Error() | ||
| return | ||
| } | ||
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| tx := waf.NewTransaction() | ||
| tx.ProcessURI("/url?Test1='SQLI", "POST", "HTTP/1.1") | ||
| tx.ProcessRequestHeaders() | ||
| _, err = tx.ProcessRequestBody() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
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| if len(tx.MatchedRules()) == 1 { | ||
| if len(tx.MatchedRules()[0].MatchedDatas()) != 1 { | ||
| t.Errorf("failed to test uri query param. Found matches: %d, %+v\n", | ||
| len(tx.MatchedRules()[0].MatchedDatas()), tx.MatchedRules()) | ||
| } | ||
| if !isMatchData(tx.MatchedRules()[0].MatchedDatas(), "Test1") { | ||
| t.Error("Key did not match: Test1 !=", tx.MatchedRules()[0]) | ||
| } | ||
| } else { | ||
| t.Errorf("failed to test uri query param: Same case arg name: %d, %+v\n", | ||
| len(tx.MatchedRules()), tx.MatchedRules()) | ||
| } | ||
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| tx = waf.NewTransaction() | ||
| tx.ProcessURI("/test?test1='SQLI&Test1='SQLI&TEST1='SQLI", "POST", "HTTP/1.1") | ||
| tx.ProcessRequestHeaders() | ||
| _, err = tx.ProcessRequestBody() | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
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| if len(tx.MatchedRules()) == 1 { | ||
| if len(tx.MatchedRules()[0].MatchedDatas()) != 1 { | ||
| t.Errorf("failed to test uri query param. Found matches: %d, %+v\n", | ||
| len(tx.MatchedRules()[0].MatchedDatas()), tx.MatchedRules()) | ||
| } | ||
| if !isMatchData(tx.MatchedRules()[0].MatchedDatas(), "Test1") { | ||
| t.Error("Key did not match: Test1 !=", tx.MatchedRules()[0]) | ||
| } | ||
| } else { | ||
| t.Errorf("failed to test qparam pollution: Multiple arg different case: %d, %+v\n", | ||
| len(tx.MatchedRules()), tx.MatchedRules()) | ||
| } | ||
| } |
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