简单web安全框架

 

web安全框架,主要用servlet filter方式覆盖httpServletRequest和HttpServletResponse方式增加一些输入输出的过滤，github地址：https://github.com/zhwj184/webSecurity

主要实现的安全包括：

1. XSS过滤（获取用户输入参数和参数值进行XSS过滤，对Header和cookie value值进行XSS过滤（转码Script标签的< > 符号），

2. 对Response的setStatus(int sc, String sm)方法 sm错误信息进行XSS过滤；

3. 对Header的CLRF进行过滤；

4. 对cookie大小和cookie的白名单进行验证；

5. 对文件上传后缀白名单进行验证；

6. 对只允许POST提交的url进行验证；

7. CSRF攻击 tokenID防御支持；

8. SESSION通过加密存储到cookie支持；

9. 静态资源路径去除../上级目录符号；

使用指南：只需要在web.xml中配置对应的filter即可。

HttpSessionCookitStoreFilter是session存储到cookie的支持，encryKey加密密钥；

DefaultBaseSecurityFilter是默认的安全过滤filter，

securityFilterList可以配置对应的filter；

CookieWhiteListFilter：cookie白名单配置，如果配置这个，则需要配置参数cookieWhiteList；

CsrfTokenCkeckFilter：对post表单提交进行csrf token验证；使用CsrfTokenIdCreator生成csrf tokenid后放入表单还有session中，key名称必须为csrf_开头；为了支持多个form表单；

FileUploadSecurityFilter：文件上传后缀白名单验证,需要配置whitefilePostFixList参数；

FormPostPermitCheckFilter;只允许post提交的url列表，需要配置onlyPostUrlList参数；

redirectWhiteList：是配置重定向白名单url参数；

StaticFilePathSecurityFilter：url的../上级路径过滤；

 

使用在

<filter>    <filter-name>HttpSessionCookitStoreFilter</filter-name>    <filter-class>org.websecurity.filter.HttpSessionCookitStoreFilter</filter-class>    <init-param>            <param-name>encryKey</param-name>        <param-value>1234567887654321</param-value>    </init-param></filter><filter>    <filter-name>DefaultBaseSecurityFilter</filter-name>    <filter-class>org.websecurity.DefaultBaseSecurityFilter</filter-class>    <init-param>        <param-name>securityFilterList</param-name><!-- ,org.websecurity.filter.CsrfTokenCkeckFilter -->        <param-value>org.websecurity.filter.CookieWhiteListFilter,org.websecurity.filter.FormPostPermitCheckFilter</param-value>    </init-param>    <init-param>        <param-name>cookieWhiteList</param-name>        <param-value>id,JESSIONID,name,clrf</param-value>    </init-param>    <init-param>        <param-name>onlyPostUrlList</param-name>        <param-value>/d/sssecurity, /user/aaa/name*</param-value><!-- 支持正则匹配 -->    </init-param>    <init-param>        <param-name>whitefilePostFixList</param-name>        <param-value>jpg,png,doc,xls</param-value>    </init-param>    <init-param>        <param-name>encryKey</param-name>        <param-value>1234567887654321</param-value>    </init-param>    <init-param>        <param-name>redirectWhiteList</param-name>        <param-value>http://localhost:8080/[0-9A-Za-z]*,http://www.taobao.com/[0-9A-Za-z]*</param-value>    </init-param></filter><filter-mapping>    <filter-name>HttpSessionCookitStoreFilter</filter-name>    <url-pattern>/*</url-pattern></filter-mapping><filter-mapping>    <filter-name>DefaultBaseSecurityFilter</filter-name>    <url-pattern>/*</url-pattern></filter-mapping>

 

测试代码：

@WebServlet(urlPatterns={"/security"},initParams={@WebInitParam(name="f", value="valuef"),@WebInitParam(name="g", value="valueg")})public class MySecurityTest extends HttpServlet {private static final long serialVersionUID = 1L;           /**     * @see HttpServlet#HttpServlet()     */    public MySecurityTest() {        super();        // TODO Auto-generated constructor stub    }/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//xss params filter//url:System.out.println(request.getParameter("xssparam")); //output:System.out.println(request.getParameterMap().toString());//cookie white list output filterSystem.out.println(request.getCookies().toString());response.addCookie(new Cookie("name", "valName"));//validresponse.addCookie(new Cookie("clrf", "valName\r\n<script>"));//validtry{response.addCookie(new Cookie("invalidName", "invalidvalName"));//not valid, throw runtimeexception}catch(Exception e){e.printStackTrace();}//cookie maxsize filterresponse.addCookie(new Cookie("id", ByteBuffer.allocate(4 * 1024 + 2).toString()));//valid//head security filterresponse.setHeader("aaa\r\nbbb", "ccc\r\\ddd\n");//session store to cookieSystem.out.println(request.getSession().getAttribute("sescookie"));request.getSession().setAttribute("sescookie", "sessioncookiestoretest");//rediction filter//response.sendRedirect("http://www.163.com");//failed//status filterresponse.setStatus(404, "<script>alert(1)</script>");}/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {response.getWriter().write("hello, world");}}

 

 一些输出：

<script>alert(1)</script>{xssparam=[Ljava.lang.String;@3476a7}[Ljavax.servlet.http.Cookie;@1f5865ajava.lang.RuntimeException: cookie:invalidName is not in whitelist,not valid.at org.websecurity.SecurityHttpServletResponse.addCookie(SecurityHttpServletResponse.java:34)at org.websecurity.test.MySecurityTest.doGet(MySecurityTest.java:44)at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at com.filter.My3Filter2.doFilter(My3Filter2.java:28)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at com.filter.My3Filter.doFilter(My3Filter.java:29)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.websecurity.DefaultBaseSecurityFilter.doFilter(DefaultBaseSecurityFilter.java:44)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)at java.lang.Thread.run(Thread.java:722)