StoredXSS-LibreNMS-Display Name 2

Description:

XSS on the parameters (Replace $DEVICE_ID with your specific $DEVICE_ID value):/device/$DEVICE_ID/edit -> param: display

of Librenms versions 24.11.0 (/~https://github.com/librenms/librenms) allows remote attackers to inject malicious scripts. When a user views or interacts with the page displaying the data, the malicious script executes immediately, leading to potential unauthorized actions or data exposure.

Proof of Concept:

1. Add a new device through the LibreNMS interface.
2. Edit the newly created device by going to the "Device Settings" section.
3. In the "Display Name" field, enter the following payload: "><img src onerror="alert(document.cookie)">.
   
4. Save the changes.
5. The XSS payload is triggered when navigating to the path /device/$DEVICE_ID/logs and hovering over a type containing a tag (such as Core 1 in the image).
   

Impact:

Execution of Malicious Code

References

• GHSA-2f4w-6mc7-4w78
• librenms/librenms#16886
• librenms/librenms@c63c912
• https://nvd.nist.gov/vuln/detail/CVE-2024-56144