java.lang.security.audit.tainted-ldapi-from-http-request.tainted-ldapi-from-http-request

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Detected input from a HTTPServletRequest going into an LDAP query. This could lead to LDAP injection if the input is not properly sanitized, which could result in attackers modifying objects in the LDAP tree structure. Ensure data passed to an LDAP query is not controllable or properly sanitize the data.

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Defintion

rules:
  - id: tainted-ldapi-from-http-request
    message: Detected input from a HTTPServletRequest going into an LDAP query. This
      could lead to LDAP injection if the input is not properly sanitized, which
      could result in attackers modifying objects in the LDAP tree structure.
      Ensure data passed to an LDAP query is not controllable or properly
      sanitize the data.
    metadata:
      cwe:
        - "CWE-90: Improper Neutralization of Special Elements used in an LDAP
          Query ('LDAP Injection')"
      owasp:
        - A01:2017 - Injection
        - A03:2021 - Injection
      references:
        - https://sensei.securecodewarrior.com/recipes/scw%3Ajava%3ALDAP-injection
      category: security
      technology:
        - java
      subcategory:
        - vuln
      impact: MEDIUM
      likelihood: MEDIUM
      confidence: MEDIUM
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
    severity: WARNING
    languages:
      - java
    mode: taint
    pattern-sources:
      - patterns:
          - pattern: (HttpServletRequest $REQ)
    pattern-sinks:
      - patterns:
          - pattern-either:
              - pattern: |
                  (javax.naming.directory.InitialDirContext $IDC).search(...)
              - pattern: |
                  (javax.naming.directory.DirContext $CTX).search(...)
          - pattern-not: >
              (javax.naming.directory.InitialDirContext $IDC).search($Y, "...",
              ...)
          - pattern-not: |
              (javax.naming.directory.DirContext $CTX).search($Y, "...", ...)

Examples

tainted-ldapi-from-http-request.java

/**
 * OWASP Benchmark v1.2
 *
 * <p>This file is part of the Open Web Application Security Project (OWASP) Benchmark Project. For
 * details, please see <a
 * href="https://owasp.org/www-project-benchmark/">https://owasp.org/www-project-benchmark/</a>.
 *
 * <p>The OWASP Benchmark is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation, version 2.
 *
 * <p>The OWASP Benchmark is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.
 *
 * @author Dave Wichers
 * @created 2015
 */
package org.owasp.benchmark.testcode;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(value = "/ldapi-00/BenchmarkTest00012")
public class BenchmarkTest00012 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // some code
        response.setContentType("text/html;charset=UTF-8");

        String param = "";
        java.util.Enumeration<String> headers = request.getHeaders("BenchmarkTest00012");

        if (headers != null && headers.hasMoreElements()) {
            param = headers.nextElement(); // just grab first element
        }

        // URL Decode the header value since req.getHeaders() doesn't. Unlike req.getParameters().
        param = java.net.URLDecoder.decode(param, "UTF-8");

        org.owasp.benchmark.helpers.LDAPManager ads = new org.owasp.benchmark.helpers.LDAPManager();
        try {
            response.setContentType("text/html;charset=UTF-8");
            String base = "ou=users,ou=system";
            javax.naming.directory.SearchControls sc = new javax.naming.directory.SearchControls();
            sc.setSearchScope(javax.naming.directory.SearchControls.SUBTREE_SCOPE);
            String filter = "(&(objectclass=person))(|(uid=" + param + ")(street={0}))";
            Object[] filters = new Object[] {"The streetz 4 Ms bar"};

            javax.naming.directory.DirContext ctx = ads.getDirContext();
            javax.naming.directory.InitialDirContext idc =
                    (javax.naming.directory.InitialDirContext) ctx;
            boolean found = false;
            javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
                    // ruleid: tainted-ldapi-from-http-request
                    idc.search(base, filter, filters, sc);
            while (results.hasMore()) {
                javax.naming.directory.SearchResult sr =
                        (javax.naming.directory.SearchResult) results.next();
                javax.naming.directory.Attributes attrs = sr.getAttributes();

                javax.naming.directory.Attribute attr = attrs.get("uid");
                javax.naming.directory.Attribute attr2 = attrs.get("street");
                if (attr != null) {
                    response.getWriter()
                            .println(
                                    "LDAP query results:<br>"
                                            + "Record found with name "
                                            + attr.get()
                                            + "<br>"
                                            + "Address: "
                                            + attr2.get()
                                            + "<br>");
                    // System.out.println("record found " + attr.get());
                    found = true;
                }
            }
            if (!found) {
                response.getWriter()
                        .println(
                                "LDAP query results: nothing found for query: "
                                        + org.owasp.esapi.ESAPI.encoder().encodeForHTML(filter));
            }
        } catch (javax.naming.NamingException e) {
            throw new ServletException(e);
        } finally {
            try {
                ads.closeDirContext();
            } catch (Exception e) {
                throw new ServletException(e);
            }
        }
    }
}

/**
 * OWASP Benchmark v1.2
 *
 * <p>This file is part of the Open Web Application Security Project (OWASP) Benchmark Project. For
 * details, please see <a
 * href="https://owasp.org/www-project-benchmark/">https://owasp.org/www-project-benchmark/</a>.
 *
 * <p>The OWASP Benchmark is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation, version 2.
 *
 * <p>The OWASP Benchmark is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU General Public License for more details.
 *
 * @author Dave Wichers
 * @created 2015
 */
package org.owasp.benchmark.testcode;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(value = "/ldapi-00/BenchmarkTest00021")
public class BenchmarkTest00021 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // some code
        response.setContentType("text/html;charset=UTF-8");

        String param = request.getParameter("BenchmarkTest00021");
        if (param == null) param = "";

        org.owasp.benchmark.helpers.LDAPManager ads = new org.owasp.benchmark.helpers.LDAPManager();
        try {
            response.setContentType("text/html;charset=UTF-8");
            javax.naming.directory.DirContext ctx = ads.getDirContext();
            String base = "ou=users,ou=system";
            javax.naming.directory.SearchControls sc = new javax.naming.directory.SearchControls();
            sc.setSearchScope(javax.naming.directory.SearchControls.SUBTREE_SCOPE);
            String filter = "(&(objectclass=person))(|(uid=" + param + ")(street={0}))";
            Object[] filters = new Object[] {"The streetz 4 Ms bar"};
            // System.out.println("Filter " + filter);
            boolean found = false;
            javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
                    // ruleid: tainted-ldapi-from-http-request
                    ctx.search(base, filter, filters, sc);
            while (results.hasMore()) {
                javax.naming.directory.SearchResult sr =
                        (javax.naming.directory.SearchResult) results.next();
                javax.naming.directory.Attributes attrs = sr.getAttributes();

                javax.naming.directory.Attribute attr = attrs.get("uid");
                javax.naming.directory.Attribute attr2 = attrs.get("street");
                if (attr != null) {
                    response.getWriter()
                            .println(
                                    "LDAP query results:<br>"
                                            + "Record found with name "
                                            + attr.get()
                                            + "<br>"
                                            + "Address: "
                                            + attr2.get()
                                            + "<br>");
                    // System.out.println("record found " + attr.get());
                    found = true;
                }
            }
            if (!found) {
                response.getWriter()
                        .println(
                                "LDAP query results: nothing found for query: "
                                        + org.owasp.esapi.ESAPI.encoder().encodeForHTML(filter));
            }
        } catch (javax.naming.NamingException e) {
            throw new ServletException(e);
        } finally {
            try {
                ads.closeDirContext();
            } catch (Exception e) {
                throw new ServletException(e);
            }
        }
    }
}

@WebServlet(value = "/ldapi-00/BenchmarkTest00630")
public class BenchmarkTest00630 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        org.owasp.benchmark.helpers.SeparateClassRequest scr =
                new org.owasp.benchmark.helpers.SeparateClassRequest(request);
        String param = scr.getTheParameter("BenchmarkTest00630");
        if (param == null) param = "";

        String bar;
        String guess = "ABC";
        char switchTarget = guess.charAt(2);

        // Simple case statement that assigns param to bar on conditions 'A', 'C', or 'D'
        switch (switchTarget) {
            case 'A':
                bar = param;
                break;
            case 'B':
                bar = "bobs_your_uncle";
                break;
            case 'C':
            case 'D':
                bar = param;
                break;
            default:
                bar = "bobs_your_uncle";
                break;
        }

        org.owasp.benchmark.helpers.LDAPManager ads = new org.owasp.benchmark.helpers.LDAPManager();
        try {
            response.setContentType("text/html;charset=UTF-8");
            String base = "ou=users,ou=system";
            javax.naming.directory.SearchControls sc = new javax.naming.directory.SearchControls();
            sc.setSearchScope(javax.naming.directory.SearchControls.SUBTREE_SCOPE);
            String filter = "(&(objectclass=person)(uid=" + bar + "))";

            javax.naming.directory.DirContext ctx = ads.getDirContext();
            javax.naming.directory.InitialDirContext idc =
                    (javax.naming.directory.InitialDirContext) ctx;
            boolean found = false;
            javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
                    // ruleid: tainted-ldapi-from-http-request
                    idc.search(base, filter, sc);

            while (results.hasMore()) {
                javax.naming.directory.SearchResult sr =
                        (javax.naming.directory.SearchResult) results.next();
                javax.naming.directory.Attributes attrs = sr.getAttributes();

                javax.naming.directory.Attribute attr = attrs.get("uid");
                javax.naming.directory.Attribute attr2 = attrs.get("street");
                if (attr != null) {
                    response.getWriter()
                            .println(
                                    "LDAP query results:<br>"
                                            + "Record found with name "
                                            + attr.get()
                                            + "<br>"
                                            + "Address: "
                                            + attr2.get()
                                            + "<br>");
                    // System.out.println("record found " + attr.get());
                    found = true;
                }
            }
            if (!found) {
                response.getWriter()
                        .println(
                                "LDAP query results: nothing found for query: "
                                        + org.owasp.esapi.ESAPI.encoder().encodeForHTML(filter));
            }
        } catch (javax.naming.NamingException e) {
            throw new ServletException(e);
        } finally {
            try {
                ads.closeDirContext();
            } catch (Exception e) {
                throw new ServletException(e);
            }
        }
    }
}

@WebServlet(value = "/ldapi-00/BenchmarkTest00021")
public class BenchmarkTest00021 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // some code
        response.setContentType("text/html;charset=UTF-8");

        String param = request.getParameter("BenchmarkTest00021");
        if (param == null) param = "";

        org.owasp.benchmark.helpers.LDAPManager ads = new org.owasp.benchmark.helpers.LDAPManager();
        try {
            response.setContentType("text/html;charset=UTF-8");
            javax.naming.directory.DirContext ctx = ads.getDirContext();
            String base = "ou=users,ou=system";
            javax.naming.directory.SearchControls sc = new javax.naming.directory.SearchControls();
            sc.setSearchScope(javax.naming.directory.SearchControls.SUBTREE_SCOPE);
            String filter = "(&(objectclass=person))(|(uid=" + "param" + ")(street={0}))";
            Object[] filters = new Object[] {"The streetz 4 Ms bar"};
            // System.out.println("Filter " + filter);
            boolean found = false;
            javax.naming.NamingEnumeration<javax.naming.directory.SearchResult> results =
                    // ok: tainted-ldapi-from-http-request
                    ctx.search(base, filter, filters, sc);
            while (results.hasMore()) {
                javax.naming.directory.SearchResult sr =
                        (javax.naming.directory.SearchResult) results.next();
                javax.naming.directory.Attributes attrs = sr.getAttributes();

                javax.naming.directory.Attribute attr = attrs.get("uid");
                javax.naming.directory.Attribute attr2 = attrs.get("street");
                if (attr != null) {
                    response.getWriter()
                            .println(
                                    "LDAP query results:<br>"
                                            + "Record found with name "
                                            + attr.get()
                                            + "<br>"
                                            + "Address: "
                                            + attr2.get()
                                            + "<br>");
                    // System.out.println("record found " + attr.get());
                    found = true;
                }
            }
            if (!found) {
                response.getWriter()
                        .println(
                                "LDAP query results: nothing found for query: "
                                        + org.owasp.esapi.ESAPI.encoder().encodeForHTML(filter));
            }
        } catch (javax.naming.NamingException e) {
            throw new ServletException(e);
        } finally {
            try {
                ads.closeDirContext();
            } catch (Exception e) {
                throw new ServletException(e);
            }
        }
    }
}