Spring Eureka 未授权访问漏洞修复问题小结
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。
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