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Move to experimental and review feedback
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@@ -0,0 +1,7 @@
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edges
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| UnvalidatedCors.java:21:22:21:48 | getHeader(...) : String | UnvalidatedCors.java:27:67:27:69 | url |
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nodes
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| UnvalidatedCors.java:21:22:21:48 | getHeader(...) : String | semmle.label | getHeader(...) : String |
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| UnvalidatedCors.java:27:67:27:69 | url | semmle.label | url |
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#select
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| UnvalidatedCors.java:27:67:27:69 | url | UnvalidatedCors.java:21:22:21:48 | getHeader(...) : String | UnvalidatedCors.java:27:67:27:69 | url | CORS header is being set using user controlled value $@. | UnvalidatedCors.java:21:22:21:48 | getHeader(...) | user-provided value |
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@@ -0,0 +1,37 @@
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import java.io.IOException;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.commons.lang3.StringUtils;
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public class UnvalidatedCors implements Filter {
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public void init(FilterConfig filterConfig) throws ServletException {}
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public void doFilter(ServletRequest req, ServletResponse res,
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FilterChain chain) throws IOException, ServletException {
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HttpServletRequest request = (HttpServletRequest) req;
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HttpServletResponse response = (HttpServletResponse) res;
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String url = request.getHeader("Origin");
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if (!StringUtils.isEmpty(url)) {
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String val = response.getHeader("Access-Control-Allow-Origin");
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if (StringUtils.isEmpty(val)) {
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response.addHeader("Access-Control-Allow-Origin", url);
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response.addHeader("Access-Control-Allow-Credentials", "true");
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}
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}
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chain.doFilter(req, res);
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}
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public void destroy() {}
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}
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@@ -0,0 +1 @@
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experimental/Security/CWE/CWE-346/UnvalidatedCors.ql
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@@ -0,0 +1 @@
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//semmle-extractor-options: --javac-args -cp ${testdir}/../../../../stubs/servlet-api-2.4:${testdir}/../../../../stubs/apache-commons-lang3-3.7
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