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GHSA-72m9-7c8x-pmmw: LibreNMS uses Improper Sanitization on Service template name leads to Stored XSS

Summary

There is improper sanitization on Service template name which is reflecting in delete button onclick event. This value can be modified and crafted as any other javascript code.

Vulnerable Code

https://github.com/librenms/librenms/blob/a61c11db7e8ef6a437ab55741658be2be7d14d34/app/Http/Controllers/ServiceTemplateController.php#L67C23-L67C23

Above is vulnerable code line which needs to be properly sanitized

PoC

  1. Go to /services/templates
  2. Enter name as testing', '14', 'http://172.105.62.194:8000/services/templates/14');alert(1);//
  3. Submit it and try to delete it, you will see popup

If you inspect element on delete button, you will notice this:- <img width="748" alt="Screenshot 2023-11-23 at 9 30 24 PM" src="https://user-images.githubusercontent.com/31764504/285260018-7672a93d-e29b-4444-8057-e6ffcb8dabfc.png">

Impact

Cross site scripting can lead to cookie stealing or an attacker can execute any other feature using this feature.

ghsa
#xss#vulnerability#git#java#php#perl

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  1. GitHub Advisory Database
  2. GitHub Reviewed
  3. CVE-2024-32479

LibreNMS uses Improper Sanitization on Service template name leads to Stored XSS

High severity GitHub Reviewed Published Apr 20, 2024 in librenms/librenms • Updated Apr 22, 2024

Package

composer librenms/librenms (Composer)

Affected versions

< 24.4.0

Description

Published to the GitHub Advisory Database

Apr 22, 2024

Last updated

Apr 22, 2024

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