CVE-2024-49758: LibreNMS has a stored XSS in ExamplePlugin with Device's Notes
Summary
The application fail to sanitising inputs properly and rendering the code from user input to browser which allow an attacker to execute malicious javascript code.
Details
User with Admin role can add Notes to a device, the application did not properly sanitize the user input, when the ExamplePlugin enable, if java script code is inside the device's Notes, its will be trigger.
PoC
1. As an admin user, enable the ExamplePlugin.
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2. Add the payload <img src="x" onerror="alert(document.cookie)"> into the device Notes
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3. Once visit the Overview of the Device, a pop-up will show up.
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Impact
It could allow authenticated users to execute arbitrary JavaScript code in the context of other users' sessions. Impacted users could have their accounts compromised, enabling the attacker to perform unauthorized actions on their behalf.
Other sources
LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. User with Admin role can add Notes to a device, the application did not properly sanitize the user input, when the ExamplePlugin enable, if java script code is inside the device's Notes, its will be trigger. This vulnerability is fixed in 24.10.0.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-49758?
The severity of CVE-2024-49758 is classified as high due to its potential for remote code execution via unsanitized input.
How do I fix CVE-2024-49758?
To fix CVE-2024-49758, update LibreNMS to version 24.10.0 or later, which contains the necessary security patches.
Who is affected by CVE-2024-49758?
CVE-2024-49758 affects LibreNMS versions prior to 24.10.0 with the vulnerability arising from improper input sanitization.
What type of vulnerability is CVE-2024-49758?
CVE-2024-49758 is classified as a cross-site scripting (XSS) vulnerability that allows execution of malicious JavaScript code.
Can CVE-2024-49758 lead to data compromise?
Yes, CVE-2024-49758 can lead to data compromise by allowing attackers to execute unauthorized scripts within user sessions.