1. 问题形容
jeecgboot后盾启动后，在浏览器输出地址
http://localhost:8080/jeecg-boot/jmreport/view/')%22nmusever=alert('hacking')%20%20(弹出对话框
2. 试验环境
jeecgboot 3.0
3. 减少配置类
- 在jeecg-boot-module-system的config包下，新建xss包，并新增几个类
- 类的具体代码如下：
package org.jeecg.config.xss; import javax.servlet.*;import javax.servlet.http.HttpServletRequest;import java.io.IOException; /** * Created by sunh on 2012/12/29. * xss 过滤器只能过滤form表单模式提交的参数 */public class XssFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { System.out.println("***********开始过滤"); XssHttpServletRequestWrapper xssRequest = new XssHttpServletRequestWrapper((HttpServletRequest) servletRequest); filterChain.doFilter(xssRequest, servletResponse); } @Override public void destroy() { }}package org.jeecg.config.xss; import com.fasterxml.jackson.databind.ObjectMapper;import com.fasterxml.jackson.databind.module.SimpleModule;import org.springframework.boot.web.servlet.FilterRegistrationBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.Primary;import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; /** * Created by sunh on 2012/12/29. * xss 主动配置类 */@Configurationpublic class XssFilterAtuoConfig { @Bean public FilterRegistrationBean xssFiltrRegister() { FilterRegistrationBean registration = new FilterRegistrationBean(); registration.setFilter(new XssFilter()); registration.addUrlPatterns("/*"); registration.setName("XssFilter"); registration.setOrder(1); return registration; } @Bean @Primary public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() { SimpleModule module = new SimpleModule(); module.addDeserializer(String.class, new XssStringJsonDeserializer()); ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().build(); objectMapper.registerModule(module); return new MappingJackson2HttpMessageConverter(objectMapper); }}package org.jeecg.config.xss; import org.springframework.web.servlet.HandlerMapping; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletRequestWrapper;import java.util.LinkedHashMap;import java.util.Map;import java.util.Objects; /** * Created by sunh on 2012/12/29. * xss 包装 */public class XssHttpServletRequestWrapper extends HttpServletRequestWrapper { public XssHttpServletRequestWrapper(HttpServletRequest request) { super(request); } @Override public String getHeader(String name) { String value = super.getHeader(name); return XssUtil.cleanXSS(value); } @Override public String getParameter(String name) { String value = super.getParameter(name); return XssUtil.cleanXSS(value); } @Override public String[] getParameterValues(String name) { String[] values = super.getParameterValues(name); if (values != null) { int length = values.length; String[] escapseValues = new String[length]; for (int i = 0; i < length; i++) { escapseValues[i] = XssUtil.cleanXSS(values[i]); } return escapseValues; } return super.getParameterValues(name); } /** * 次要是针对HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE 获取pathvalue的时候把原来的pathvalue通过xss过滤掉 */ @Override public Object getAttribute(String name) { // 获取pathvalue的值 if (HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE.equals(name)) { Map uriTemplateVars = (Map) super.getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE); if (Objects.isNull(uriTemplateVars)) { return uriTemplateVars; } Map newMap = new LinkedHashMap<>(); uriTemplateVars.forEach((key, value) -> { if (value instanceof String) { newMap.put(key, XssUtil.cleanXSS((String) value)); } else { newMap.put(key, value); } }); return newMap; } else { return super.getAttribute(name); } }}package org.jeecg.config.xss; import com.fasterxml.jackson.databind.ObjectMapper;import com.fasterxml.jackson.databind.module.SimpleModule; /** * Created by sunh on 2012/12/29. * 创立xss的json转换器 */public class XssObjectMapper extends ObjectMapper { public XssObjectMapper() { SimpleModule module = new SimpleModule("XSS JsonDeserializer"); module.addDeserializer(String.class, new XssStringJsonDeserializer()); this.registerModule(module); }}package org.jeecg.config.xss; import com.fasterxml.jackson.core.JsonParser;import com.fasterxml.jackson.databind.DeserializationContext;import com.fasterxml.jackson.databind.JsonDeserializer;import org.springframework.web.util.HtmlUtils; import java.io.IOException; /** * Created by sunh on 2012/12/29. * 基于xss的JsonDeserializer */public class XssStringJsonDeserializer extends JsonDeserializer<String> { @Override public Class<String> handledType() { return String.class; } @Override public String deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException { return HtmlUtils.htmlEscape(jsonParser.getValueAsString()); }}package org.jeecg.config.xss; import java.util.Objects; /** * Created by sunh on 2012/12/29 * xss工具类 */public class XssUtil { public static String cleanXSS(String value) { if (Objects.isNull(value)) { return value; } //You'll need to remove the spaces from the html entities below value = value.replaceAll("<", "& lt;").replaceAll(">", "& gt;"); value = value.replaceAll("\\(", "& #40;").replaceAll("\\)", "& #41;"); value = value.replaceAll("'", "& #39;"); value = value.replaceAll("eval\\((.*)\\)", ""); value = value.replaceAll("[\\\"\\\'][\\s]*javascript:(.*)[\\\"\\\']", "\"\""); value = value.replaceAll("script", ""); return value; }}4. 测试后果
启动后端，在浏览器拜访地址
http://localhost:8080/jeecg-boot/jmreport/view/')%22nmusever=alert('hacking')%20%20(未弹出对话框
启动前端，原来的服务能失常拜访。