CVE-2021-43324 Cross-site Scripting in LibreNMS
An attacker can inject malicious scripts via widget titles in LibreNMS, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-43324?
CVE-2021-43324 is a medium-severity cross-site scripting vulnerability in Librenms Librenms, published on 3 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
LibreNMS through 21.10.2 allows XSS via a widget title.
Weakness: CWE-79
Which versions are affected by CVE-2021-43324?
2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
librenms/librenms Packagist | All versions | 21.11.0 |
librenms/librenms Packagist | All versions | 21.11.0 |
Products include Librenms Librenms.
How do I fix CVE-2021-43324?
Upgrade librenms/librenms to 21.11.0 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-43324 being exploited?
There is no known exploitation of CVE-2021-43324 in the wild and no public exploit code.
Other vulnerabilities in Librenms Librenms
Sources
Also known as GHSA-46rx-6jg9-4fh8.