Java配置47-Spring Eureka 未授权访问漏洞修复 - 机房托管|北京机房租用|IDC机柜租用租赁|电信联通移动机房机柜|带宽租用-价格及费用咨询

文章目录

- 1. 背景
- 2. 方法
- - 2.1 Eureka Server 添加安全组件
  - 2.2 Eureka Server 添加参数
  - 2.3 重启 Eureka Server
  - 2.4 Eureka Server 升级版本
  - 2.5 Eureka Client 配置
  - 2.6 Eureka Server 添加代码
  - 2.7 其他问题

1. 背景

项目组使用的 Spring Boot 比较老，是 1.5.4.RELEASE 。最近被检测出 Spring Eureka 未授权访问漏洞。

现状是浏览器直接访问 Eureka Server 可以直接进去，看到已经注册的服务信息。

2. 方法

2.1 Eureka Server 添加安全组件

Eureka Server 添加 pom 依赖：

        
            org.springframework.boot
            spring-boot-starter-security

2.2 Eureka Server 添加参数

spring.application.name:demo-eureka
server.port: 8088
eureka.instance.hostname=localhost
#禁用将自己作为客户端注册，禁用客户端注册行为
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
#eureka地址
eureka.client.service-url.defaultZone=http://${spring.security.user.name}:${spring.security.user.password}@${eureka.instance.hostname}:${server.port}/eureka
#eureka.client.service-url.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka
#关闭自我保护 --本地开发环境可以关闭，生产环境
eureka.server.enable-self-preservation = false
#清理节点时间
eureka.server.eviction-interval-timer-in-ms = 60000
spring.security.basic.enabled=true
spring.security.user.name=demo
spring.security.user.password=123abcd

2.3 重启 Eureka Server

重启 Eureka Server ，然后刷新访问页面，显示登录框：

输入配置的用户名和密码。

spring.security.user.name=demo
spring.security.user.password=123abcd

然后就报错了：Reason: Bad credentials。

奇怪，明明是按照配置文件里面输入的，怎么还会报用户名或密码错误呢。

查了一些资料，说跟 security 加密方法有关，整了半天搞不定。

2.4 Eureka Server 升级版本

实在没招了，只能怀疑用的框架版本太低，去重新整一个，eureka 就用了个服务发现，问题不大。

访问：https://start.spring.io/

把项目下载到本地，依赖已经加好了：

	
		
			org.springframework.boot
			spring-boot-starter-security
		
		
			org.springframework.cloud
			spring-cloud-starter-netflix-eureka-server
		

		
			org.springframework.boot
			spring-boot-starter-test
			test
		
		
			org.springframework.security
			spring-security-test
			test
		
	
	
		
			
				org.springframework.cloud
				spring-cloud-dependencies
				${spring-cloud.version}
				pom
				import

在启动类上加上注解：

package com.demo.cloudeurekaserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@EnableEurekaServer
@SpringBootApplication
public class CloudEurekaServerApplication {

	public static void main(String[] args) {
		SpringApplication.run(CloudEurekaServerApplication.class, args);
	}

}

再把 2.2 的参数加到 properties 文件中（最好换个 server.port），然后 run 启动类，访问 eureka ，输入用户名和密码，进去了：

2.5 Eureka Client 配置

eureka client 参数：

eureka.client.enabled=true
eureka.client.eureka-server-port=8089
eureka.client.service-url.defaultZone=http://demo:123abcd@localhost:8089/eureka/

启动 eureka client，报错：

javax.ws.rs.WebApplicationException: null
	at com.netflix.discovery.provider.DiscoveryJerseyProvider.readFrom(DiscoveryJerseyProvider.java:110)
	at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:634)
	at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:586)
	at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.sendHeartBeat(AbstractJerseyEurekaHttpClient.java:105)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92)
	at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92)
	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118)
	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92)
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:119)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92)
	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:824)
	at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1388)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

2023-11-03 14:41:26.339  WARN [test-app-service,,,] 16240 --- [tbeatExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient    : Request execution failed with message: null
2023-11-03 14:41:26.339 ERROR [test-app-service,,,] 16240 --- [tbeatExecutor-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_TEST-APP-SERVICE/10.136.44.122:test-app-service:60000 - was unable to send heartbeat!

com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:111)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92)
	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77)
	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89)
	at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:824)
	at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1388)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

刷新 eureka 页面，也没有服务信息，服务注册失败了。

这是因为从 Spring Boot 2.0 开始，默认情况下会启用CSRF保护，以防止CSRF攻击应用程序，导致服务注册失败。

2.6 Eureka Server 添加代码

修改 Eureka Server ：

package com.demo.cloudeurekaserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableEurekaServer
@SpringBootApplication
public class CloudEurekaServerApplication {

	public static void main(String[] args) {
		SpringApplication.run(CloudEurekaServerApplication.class, args);
	}

	/**
	 * springboot 从 2.0 开始，默认情况下会启用CSRF保护
	 * 需要关闭
	 */
	@EnableWebSecurity
	static class WebSecurityConfig extends WebSecurityConfigurerAdapter {
		@Override
		protected void configure(HttpSecurity http) throws Exception {
			//方法1：关闭csrf
//			http.csrf().disable();
			//方法2：忽略/eureka/** 所有请求
			http.csrf().ignoringAntMatchers("/eureka/**");
			super.configure(http);
		}
	}
}

重启 Eureka Server 和 Eureka Client ，这次没有报错，刷新页面，重新登录后，看到注册的服务信息：

2.7 其他问题

在 Spring Security 5.7.0-M2 中，WebSecurityConfigurerAdapter 被弃用了，Spring 鼓励用户转向基于组件的安全配置。这意味着，现在应该使用基于组件的安全配置来配置 HttpSecurity，而不是继承 WebSecurityConfigurerAdapter。这种方式更加灵活，可以更好地支持 Spring Boot 2.x 和 Spring 5.x。

我试了几个方法，没有替换掉，靠你了，耿小姐。

先这样吧。

（图网，侵删）