CVE-2022-0576: Cross-site Scripting in librenms
Summary
CVE-2022-0576: Cross-site Scripting in librenms. Affects librenms/librenms versions < 22.1.0. Fixed in 22.1.0. How to fix ↓
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Background
LibreNMS is an open-source network monitoring tool that provides comprehensive monitoring and alerting for networks of all sizes. It offers features such as automatic discovery, device polling, and graphing of network metrics. However, prior to version 22.1.0, LibreNMS is vulnerable to a Cross-site Scripting (XSS) attack.
Vulnerability Detail
The vulnerability allows an attacker to inject malicious scripts into web pages viewed by users of the affected LibreNMS instance. This can lead to various consequences, including unauthorized access to sensitive information, session hijacking, and the execution of arbitrary code in the context of the user's browser. The vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
How To Fix
Minimum fixed version
22.1.0
This is the first release that contains the fix.
composer require librenms/librenms:22.1.0
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Workaround
If upgrading to the latest version is not immediately feasible, a temporary workaround is to implement input validation and output encoding to prevent the execution of malicious scripts. This can be achieved by using security libraries or frameworks that provide built-in protection against XSS attacks.
Conclusion
In conclusion, LibreNMS prior to version 22.1.0 is vulnerable to a Cross-site Scripting (XSS) attack. To mitigate this vulnerability, it is crucial to upgrade to version 22.1.0 or later. Implementing input validation and output encoding can serve as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to execute arbitrary scripts in the context of the user's browser, potentially leading to unauthorized access to sensitive information and other malicious activities.
At the time of this report, there are no known public exploits targeting this specific vulnerability. However, it is important to promptly apply the recommended fix to mitigate the risk.
No, only versions prior to 22.1.0 are affected. It is crucial to upgrade to the latest version to ensure the vulnerability is addressed.
Yes, this vulnerability can be exploited remotely by an attacker who can trick a user into visiting a malicious website or clicking on a specially crafted link.
While this vulnerability can be difficult to detect, monitoring network traffic and analyzing logs for suspicious activities can help identify potential compromises. It is also recommended to regularly update and patch LibreNMS to minimize the risk of exploitation.
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