Protection of sensitive business information from unauthorized access
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class AnalyticsServlet extends HttpServlet {
private static final String API_KEY = "1234567890"; // This should be securely stored and not exposed.
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String apiKey = req.getParameter("apiKey");
if (API_KEY.equals(apiKey)) {
// Return analytics data
String analyticsData = getAnalyticsData();
resp.getWriter().write(analyticsData);
} else {
resp.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Invalid API Key");
}
}
private String getAnalyticsData() {
// Fetch analytics data from database
return "Analytics Data";
}
}
In the above code, a
doGet method is defined in
AnalyticsServlet, which is a subclass of
HttpServlet. This method is intended to return analytics data when provided with a valid API key as a parameter.
The API key is hardcoded as a static final variable
API_KEY in the class. The
doGet method retrieves the API key from the request parameter and compares it with the hardcoded API key. If they match, the analytics data is fetched and returned in the response.
However, this design poses a significant security vulnerability. The API key is exposed in the code, making it susceptible to unauthorized access. An attacker can easily obtain the API key from the Swagger URL and use it to access the analytics data.
Moreover, the analytics data is sensitive business information and should not be exposed without proper authorization and authentication mechanisms. In this case, the API key is the only layer of security, and it is poorly implemented. Therefore, the business information leak vulnerability exists in this code.
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.security.Principal;
public class AnalyticsServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
Principal userPrincipal = req.getUserPrincipal();
if (userPrincipal == null) {
resp.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized access");
return;
}
// Check if the user has the right role to access the analytics data
if (req.isUserInRole("analytics")) {
// Fetch analytics data securely from the database
String analyticsData = getSecureAnalyticsData();
resp.getWriter().write(analyticsData);
} else {
resp.sendError(HttpServletResponse.SC_FORBIDDEN, "You don't have permission to access this resource");
}
}
private String getSecureAnalyticsData() {
// Fetch analytics data securely from the database
return "Secure Analytics Data";
}
}
The updated code removes the API key from the code and implements an authentication and authorization mechanism to protect the analytics data.
The
doGet method now checks if the user is authenticated by calling
req.getUserPrincipal(). If the user is not authenticated, it sends an HTTP 401 Unauthorized error.
Next, it checks if the authenticated user has the "analytics" role by calling
req.isUserInRole("analytics"). If the user does not have the required role, it sends an HTTP 403 Forbidden error.
If the user is authenticated and has the required role, it fetches the analytics data securely from the database by calling
getSecureAnalyticsData().
This code assumes that you have set up authentication and role-based access control in your web application.
To further enhance the security of your analytics endpoint, consider implementing rate limiting or throttling to prevent abuse. Regularly review and update your code to address any new vulnerabilities or security risks.