30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
There is no reason to have a ``++main++`` method in a web application. It may have been useful for debugging during application development, but such a method should never make it into production. Having a ``++main++`` method in a web application opens a door to the application logic that an attacker may never be able to reach (but watch out if one does!), but it is a sloppy practice and indicates that other problems may be present.
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This rule raises an issue when a ``++main++`` method is found in a servlet or an EJB.
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== Noncompliant Code Example
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----
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public class MyServlet extends HttpServlet {
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public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
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if (userIsAuthorized(req)) {
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updatePrices(req);
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}
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}
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public static void main(String[] args) { // Noncompliant
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updatePrices(req);
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}
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}
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----
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== See
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* https://www.owasp.org/index.php/Top_10-2017_A3-Sensitive_Data_Exposure[OWASP Top 10 2017 Category A3] - Sensitive Data Exposure
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* https://cwe.mitre.org/data/definitions/489.html[MITRE, CWE-489] - Leftover Debug Code
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* https://wiki.sei.cmu.edu/confluence/x/qzVGBQ[CERT, ENV06-J.] - Production code must not contain debugging entry points
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