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目标URL存在跨站漏洞和目标URL存在http host头攻击漏洞处理方案

启示号
教育
2年前
201

package com.iss.itim.console.common;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang.StringUtils;

public class SessionFilter implements Filter
{
public void destroy()
{
}

public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
throws IOException, ServletException
{
HttpServletRequest request = (HttpServletRequest)servletRequest;

HttpServletResponse response = (HttpServletResponse)servletResponse;
String requestStr = getRequestString(request);
System.out.println("requestStr： ======================== " + requestStr);
System.out.println("完整的地址是===="+request.getRequestURL().toString());
System.out.println("提交的方式是========"+request.getMethod());
if("bingo".equals(guolv2(requestStr))||"bingo".equals(guolv2(request.getRequestURL().toString()))){
System.out.println("======访问地址发现非法字符，已拦截======");
response.sendRedirect(request.getContextPath() + "/login.jsp");
return;
}
//主机ip和端口或域名和端口
String myhosts = request.getHeader("host");
if(!StringUtils.equals(myhosts, "xx.xx.xxx.xxx:xxxx") && !StringUtils.equals(myhosts, "xx.xx.xxx.xxx:xxxx")
&& !StringUtils.equals(myhosts, "xx.xx.xxx.xxx:xxxx")&&!StringUtils.equals(myhosts, "xx.xx.xxx.xxx")
&& !StringUtils.equals(myhosts, "xx.xx.xxx.xxx") && !StringUtils.equals(myhosts, "xx.xx.xxx.xxx") ){
System.out.println("======访问host非法，已拦截======");
response.sendRedirect(request.getContextPath() + "/login.jsp");
return;
}

String currentURL = request.getRequestURI();
//add by wangsk 过滤请求特殊字符，扫描跨站式漏洞
Map parameters = request.getParameterMap();
if (parameters != null && parameters.size() > 0) {
for (Iterator iter = parameters.keySet().iterator(); iter.hasNext();) {
String key = (String) iter.next();
String[] values = (String[]) parameters.get(key);
for (int i = 0; i < values.length; i++) {
values[i]=guolv(values[i]);
System.out.println(values[i]);
}
}
}

public void init(FilterConfig filterConfig)
throws ServletException
{
}
public static String guolv(String a){
a = a.replaceAll("%22","");
a = a.replaceAll("%27","");
a = a.replaceAll("%3E","");
a = a.replaceAll("%3e","");
a = a.replaceAll("%3C","");
a = a.replaceAll("%3c","");
a = a.replaceAll("<","");
a = a.replaceAll(">","");
a = a.replaceAll("\"","");
a = a.replaceAll("'","");
a = a.replaceAll("\\+","");
a = a.replaceAll("\\(","");
a = a.replaceAll("\\)","");
a = a.replaceAll(" and ","");
a = a.replaceAll(" or ","");
a = a.replaceAll(" 1=1 ","");
return a;
}

private String getRequestString(HttpServletRequest req) {
String requestPath = req.getServletPath().toString();
String queryString = req.getQueryString();
if (queryString != null)
return requestPath + "?" + queryString;
else
return requestPath;
}

public String guolv2(String a){
if(StringUtils.isNotEmpty(a)){
if(a.contains("%22") || a.contains("%3E") || a.contains("%3e") || a.contains("%3C") || a.contains("%3c") ||
a.contains("<") || a.contains(">") || a.contains("\"") || a.contains("'") || a.contains("+") || /*a.contains("%27") ||*/
a.contains(" and ") || a.contains(" or ") || a.contains("1=1") ||
a.contains("(") || a.contains(")") ){
return "bingo";
}
}
return a;
}

}