Rule Definition
When several validation form have the same name, the Struts Validator framework will choose one of the form validation to check input values. This means that the behavior is not controlled and that wrong input pass the validation check. This may lead to SQL injection, cross-site scripting...
Remediation
Find the right validator and remove the others.
Violation Code Sample
----> validation.xml:
<form-validation>
<formset>
<form name="logonBean">
...
</form>
<form name="logonBean"> // VIOLATION
...
</form>
</formset>
</form-validation>
Fixed Code Sample
----> validation.xml:
<form-validation>
<formset>
<form name="logonBean"> // FIXED
...
</form>
</formset>
</form-validation>
Reference
http://cwe.mitre.org/data/definitions/102.html
http://www.owasp.org/index.php/Struts:_Duplicate_Validation_Forms
Related Technologies
JEE
Technical Criterion
Secure Coding - Input Validation
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