CVE-2021-25929 Cross-site Scripting in OpenNMS Horizon
An authenticated attacker can inject malicious scripts via the noticeWizard endpoint, potentially tricking admin users into executing code or downloading malicious files.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-25929?
CVE-2021-25929 is a medium-severity cross-site scripting vulnerability in OpenNMS, published on 20 May 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to Stored Cross-Site Scripting since there is no validation on the input being sent to the `name` parameter in `noticeWizard` endpoint. Due to this flaw an authenticated attacker could inject arbitrary script and trick other admin users into downloading malicious files.
Weakness: CWE-79
Which versions are affected by CVE-2021-25929?
2 open source packages ship an affected version, including org.opennms:opennms. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
org.opennms:opennms Maven | From 1.0.0 | 27.1.1 |
org.opennms:opennms Maven | From 1.0.0 | 27.1.1 |
Products include Opennms Horizon, Opennms Meridian.
How do I fix CVE-2021-25929?
Upgrade org.opennms:opennms to 27.1.1 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-2021-25929 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25929 exists.
Other vulnerabilities in OpenNMS
- CVE-2021-25931 Cross-Site Request Forgery in OpenNMS Horizon
- CVE-2021-3396 OpenNMS Horizon RCE via JEXL2 expression
- CVE-2023-0872 ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users
- CVE-2023-0870 Form Can Be Manipulated with Cross-Site Request Forgery (CSRF)
- CVE-2020-11886 SQL injection in n/a
Sources
Also known as GHSA-jmv4-73v2-pvgc.