CWE
79
Advisory Published
Advisory Published
Updated

CVE-2023-48295: Cross-site Scripting at Device groups Deletion feature in LibreNMS

First published: Fri Nov 17 2023(Updated: )

### Summary XSS attacks occurs when application is not sanitising inputs properly and rendering the code from user input to browser which could allow an attacker to execute malicious javascript code. ### PoC 1. Login 2. Create a device group in /device-groups 3. Name it as `"><img src=x onerror=alert(1);>` 4. save it 5. Go to services and create a service template and add that device group into that and save it 6. After that go back to device groups and delete that device, you will see XSS payload popup in message <img width="1043" alt="Screenshot 2023-11-08 at 9 15 56 PM" src="https://user-images.githubusercontent.com/31764504/281489434-9beaebd6-b9ce-4098-a8e0-d67b185062b5.png"> ### Vulnerable code: https://github.com/librenms/librenms/blob/63eeeb71722237d1461a37bb6da99fda25e02c91/app/Http/Controllers/DeviceGroupController.php#L173C21-L173C21 Line 173 is not sanitizing device name properly <img width="793" alt="Screenshot 2023-11-08 at 9 26 14 PM" src="https://user-images.githubusercontent.com/31764504/281490570-5ae6e73a-37ce-4683-8bc8-81655abd8d09.png"> ### Impact Cross site scripting can lead to cookie stealing attacks

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
composer/librenms/librenms<23.11.0
23.11.0
Librenms Librenms<23.11.0

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Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-48295.

  • What is the severity of CVE-2023-48295?

    The severity of CVE-2023-48295 is medium with a CVSS score of 6.3.

  • What is the affected software for CVE-2023-48295?

    The affected software for CVE-2023-48295 is LibreNMS version up to and exclusive of 23.11.0.

  • How does the vulnerability occur?

    This vulnerability occurs due to improper sanitization of user inputs and execution of malicious JavaScript code.

  • How can I fix CVE-2023-48295?

    To fix CVE-2023-48295, upgrade LibreNMS to version 23.11.0 or above.

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