Java配置47-Spring Eureka 未授权访问漏洞修复

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

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

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>

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。

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