代刷网站推广全网最便宜,视频直播怎么做,wordpress 资源下载主题,wordpress主题之家错误信息如下#xff1a; 解决方案#xff1a;
原因#xff1a;未对用户输入正确执行危险字符清理 未检查用户输入中是否包含“…”#xff08;两个点#xff09;字符串#xff0c;比如 url 为 /login?action…/webapps/RTJEKSWTN26635typerandomCode cookie为Coo…错误信息如下 解决方案
原因未对用户输入正确执行危险字符清理 未检查用户输入中是否包含“…”两个点字符串比如 url 为 /login?action…/webapps/RTJEKSWTN26635typerandomCode cookie为Cookie: JSESSIONID…/webapps/RTJEKSWTN26241; 测试返回为200
解决办法通过建立过滤器方法增加对所有用户输入信息中是否包含“..”两个点字符串进行清理过滤。
使用AppScan扫描之后可以通过这样的方式进行指定问题手动测试
使用过滤器过滤参数以及cookie中的…/
web.xml 配置拦截器 filterfilter-nameInjectFilter/filter-namefilter-classcom.fh.filter.InjectFilter/filter-class/filter 创建拦截器
package com.fh.filter;import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;public class InjectFilter implements Filter {private static Logger log LoggerFactory.getLogger(InjectFilter.class);private static final String REG_EXP \\.\\./;Overridepublic void init(FilterConfig filterConfig) throws ServletException {}public void doFilter(ServletRequest request, ServletResponse response,FilterChain filterchain) throws IOException, ServletException {//判断是否有注入攻击字符HttpServletRequest req (HttpServletRequest) request;boolean flag injectInput(req, response);if (!flag) {return;} else {filterchain.doFilter(request, response);}}Overridepublic void destroy() {}/*** 判断request中是否含有注入攻击字符** param request* return*/public boolean injectInput(ServletRequest request, ServletResponse response) throws IOException {Enumeration e request.getParameterNames();String attributeName;String attributeValues[];HttpServletRequest req (HttpServletRequest) request;String cookie req.getHeader(Cookie);if (!isSpecialChar(cookie, response)){return false;}while (e.hasMoreElements()) {attributeName (String) e.nextElement();//不对密码信息进行过滤一般密码中可以包含特殊字符if (attributeName.equals(username) || attributeName.equals(password)) {continue;}attributeValues request.getParameterValues(attributeName);for (int i 0; i attributeValues.length; i) {if (attributeValues[i] null || attributeValues[i].equals())continue;boolean flag isSpecialChar(attributeValues[i], response);if (!flag){return flag;}}}return true;}/*** 判断字符串中是否含有注入攻击字符*/private boolean isSpecialChar(String value, ServletResponse servletResponse) throws IOException {Pattern pattern Pattern.compile(REG_EXP);if (value null) {return true;}Matcher matcher pattern.matcher(value);if (matcher.find()) {log.info(入参中有非法字符: value);HttpServletResponse response (HttpServletResponse) servletResponse;MapString, Object responseMap new HashMap();// 匹配到非法字符,立即返回responseMap.put(code, 500);responseMap.put(msg, 入参中有非法字符);response.setContentType(application/json;charsetUTF-8);response.setStatus(HttpStatus.OK.value());PrintWriter writer response.getWriter();writer.write(JSON.toJSONString(responseMap));writer.flush();writer.close();return false;}return true;}
}
