CVE-2023-48295 – librenms/librenms

Package

Manager: composer
Name: librenms/librenms
Vulnerable Version: >=0 <23.11.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00295 pctl0.52364

Details

LibreNMS Cross-site Scripting at Device groups Deletion feature ### 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

Metadata

Created: 2023-11-17T21:51:24Z
Modified: 2023-11-17T21:51:24Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/11/GHSA-8phr-637g-pxrg/GHSA-8phr-637g-pxrg.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-8phr-637g-pxrg
Finding: F425
Auto approve: 1