C-MOR Video Surveillance 5.2401 Cross Site Scripting

`Advisory ID: SYSS-2024-020  
Product: C-MOR Video Surveillance  
Manufacturer: za-internet GmbH  
Affected Version(s): 5.2401  
Tested Version(s): 5.2401  
Vulnerability Type: Reflected Cross-Site Scripting (CWE-79)  
Risk Level: Medium  
Solution Status: Fixed  
Manufacturer Notification: 2024-04-05  
Solution Date: 2024-07-31  
Public Disclosure: 2024-09-04  
CVE Reference: CVE-2024-45176  
Authors of Advisory: Chris Beiter, Frederik Beimgraben,  
and Matthias Deeg  
  
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Overview:  
  
The software product C-MOR is an IP video surveillance system.  
  
The manufacturer describes the product as follows:  
  
"With C-MOR video surveillance, it is possible to check your  
surveillance over network and the Internet. You can access the live  
view as well as previous recordings from any PC or mobile device.  
C-MOR is managed and controlled over the C-MOR web interface.  
IP settings, camera recording setup, user rights and so on are set  
over the web without the installation of any software on the  
client."[1]  
  
Due to improper input validation, the C-MOR web interface is vulnerable  
to reflected cross-site scripting attacks.  
  
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Vulnerability Details:  
  
By analyzing the C-MOR web interface, it was found that different  
functions are prone to reflected cross-site scripting attacks due to  
insufficient user input validation.  
  
This kind of attack allows an attacker to send a manipulated link to  
an authenticated victim in order to execute arbitrary JavaScript code  
in the context of the victim's web browser.  
  
Reflected cross-site scripting vulnerabilities were found in the  
following C-MOR scripts and exploited via different URL parameters,  
for instance the parameter "ujava":  
  
* index-de.plm  
* list-timelapse.plm  
* list-motion.plm  
* setdelays.plm  
* show-movies.plm  
* show-movies-f.plm  
* uploadcambackup.plm  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Proof of Concept (PoC):  
  
The following three sample attack vectors exemplarily demonstrate  
the found security issue.  
  
1) index-de.plm  
  
The following URL is an example of an attack vector exploiting a  
reflected cross-site scripting vulnerability via the URL parameter  
"ujava" of the web interface index page "index-de.plm":  
  
https://<HOST>/index-de.pml?ujava="><script>alert("SySS XSS!")</script><z="  
  
  
2) list-timelapse.plm  
  
The following URL is an example of an attack vector exploiting a  
reflected cross-site scripting vulnerability in the page  
"list-timelapse.plm" via the URL parameter "days":  
  
https://<HOST>/list-timelapse.pml?days=1100&cam=cam1"><script>alert("SySS   
XSS!")</script><z="  
  
  
3) show-movies.plm  
  
The following URL is an example of an attack vector exploiting a  
reflected cross-site scripting vulnerability in the page  
"show-movies.plm" via the URL parameter "days":  
  
https://<HOST>/show-movies.pml?cam=cam1&days="><script>alert("SySS   
XSS!")</script><z="  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Solution:  
  
Install C-MOR Video Surveillance version 6.00PL1.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Disclosure Timeline:  
  
2024-04-05: Vulnerability reported to manufacturer  
2024-04-05: Manufacturer acknowledges receipt of security advisories  
2024-04-08: Exchange regarding security updates and disclosure timeline  
2024-05-08: Further exchange concerning security updates and disclosure  
timeline; public release of all security advisories  
scheduled for release of C-MOR Video Surveillance version 6  
2024-05-10: Release of C-MOR software version 5.30 with security updates  
for some reported security issues  
2024-07-19: E-mail to manufacturer concerning release date of C-MOR  
Video Surveillance version 6; response with planned  
release date of 2024-08-01  
2024-07-30: E-mail from manufacturer with further information  
concerning security fixes  
2024-07-31: Release of C-MOR software version 6.00PL1  
2024-09-04: Public release of security advisory  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
References:  
  
[1] Product website for C-MOR Video Surveillance  
https://www.c-mor.com/  
[2] SySS Security Advisory SYSS-2024-020  
  
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2024-020.txt  
[3] SySS Responsible Disclosure Policy  
https://www.syss.de/en/responsible-disclosure-policy/  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Credits:  
  
This security vulnerability was found by Chris Beiter, Frederik  
Beimgraben, and Matthias Deeg.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Disclaimer:  
  
The information provided in this security advisory is provided "as is"  
and without warranty of any kind. Details of this security advisory may  
be updated in order to provide as accurate information as possible. The  
latest version of this security advisory is available on the SySS Web  
site.  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Copyright:  
  
Creative Commons - Attribution (by) - Version 3.0  
URL: http://creativecommons.org/licenses/by/3.0/deed.en  
`