SEH utnserver Pro 20.1.22 Cross Site Scripting

`St. Pölten UAS 20241118-0  
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title| Multiple Stored Cross-Site Scripting  
product| SEH utnserver Pro  
vulnerable version| 20.1.22  
fixed version| 20.1.35  
CVE number| CVE-2024-11304  
impact| High  
homepage| https://www.seh-technology.com/  
found| 2024-05-24  
by| P. Riedl, J. Springer, P. Chistè, D. Sagl, S. Vogt  
| These vulnerabilities were discovery during research at  
| St.Pölten UAS, supported and coordinated by CyberDanube.  
|  
| https://fhstp.ac.at | https://cyberdanube.com  
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Vendor description  
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"We are SEH from Bielefeld - manufacturer of high-quality network solutions.  
With over 35 years of experience in the fields of printing and networks, we  
offer our customers a broad and high-level expertise in solutions for all types  
of business environments."  
  
Source: https://www.seh-technology.com/us/company/about-us.html  
  
Vulnerable versions  
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utnserver Pro / 20.1.22  
utnserver ProMAX / 20.1.22  
INU-100 / 20.1.22  
  
  
Vulnerability overview  
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1) Multiple Stored Cross-Site Scripting (CVE-2024-11304)  
Different settings on the web interface of the device can be abused to store  
JavaScript code and execute it in the context of a user's browser.  
  
  
Proof of Concept  
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1) Multiple Stored Cross-Site Scripting (CVE-2024-11304)  
The following snippet can be used to demonstrate, that stored cross-site  
scripting is possible in multiple locations on the device:  
"><script>alert(document.location)</script>  
  
Examples are:  
* Users password: "usrMg_pwd"  
This can be displayed in cleartext and executed in the device configuration.  
* Certificate options: "Common name", "Organization name", "Locality name"  
This can be executed in the certificate information.  
* Device description: "Host name", "Contact person", "Description"  
This can be executed in "Device -> Description".  
* USB password via uploading a crafted "_parameters.txt" file: "usbMdg_pwd"  
This can be executed in the "Maintenance -> Content View" tab.  
  
  
Saving this text to the device description leads to a persistent cross-site  
scripting. Therefore, everyone who openes the device description executes the  
injected code in the context of the own browser.  
  
  
The vulnerabilities were manually verified on an emulated device by using the  
MEDUSA scalable firmware runtime (https://medusa.cyberdanube.com).  
  
Solution  
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Install firmware version 20.1.35 to fix the vulnerabilities.  
  
  
Workaround  
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None  
  
  
Recommendation  
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CyberDanube recommends SEH Computertechnik customers to upgrade the firmware to  
the latest version available.  
  
  
Contact Timeline  
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2024-09-23: Contacting SEH Computertechnik and sent advisory to support.  
Support answered, that vulnerabilities are fixed in version  
20.1.35.  
2024-10-21: Closed the issue and scheduled publication for November.  
2024-11-18: Coordinated disclosure of advisory.  
  
Web: https://www.fhstp.ac.at/  
Twitter: https://x.com/fh_stpoelten  
Mail: [email protected]  
  
EOF T. Weber / @2024  
  
  
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