CVE-2024-47528: librenms XSS — Exploit & Fix

Description

LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. Stored Cross-Site Scripting (XSS) can be achieved by uploading a new Background for a Custom Map. Users with "admin" role can set background for a custom map, this allow the upload of SVG file that can contain XSS payload which will trigger on load. This led to Stored Cross-Site Scripting (XSS). The vulnerability is fixed in 24.9.0.

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CVSS v3.1 Score

4.8

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-116 CWE-116

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
librenms	librenms	< 24.9.0

References

Advisories & Patches

https://github.com/librenms/librenms/commit/d959bf1b366319eda16e3cd6dfda8a22beb203be https://github.com/librenms/librenms/security/advisories/GHSA-x8gm-j36p-fppf

Exploits

https://github.com/librenms/librenms/security/advisories/GHSA-x8gm-j36p-fppf

Frequently Asked Questions

What is CVE-2024-47528? +

LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. Stored Cross-Site Scripting (XSS) can be achieved by uploading a new Background for a Custom Map. Users with "admin" role can set background for a custom map, this allow the upload of SVG file that can contain XSS payload which will trigger on load. This led to Stored Cross-Site Scripting (XSS). The vulnerability is fixed in 24.9.0. It has a CVSS v3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2024-47528? +

CVE-2024-47528 has a CVSS v3.1 score of 4.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-47528? +

CVE-2024-47528 affects products from librenms, specifically: librenms. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47528? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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