CVE-2021-25933 Cross-site Scripting in OpenNMS Horizon
An authenticated attacker can inject malicious scripts via group parameters, potentially compromising admin accounts and systems in OpenNMS.
- 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-2021-25933?
CVE-2021-25933 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 the function `validateFormInput()` performs improper validation checks on the input sent to the `groupName` and `groupComment` parameters. Due to this flaw, an authenticated attacker could inject arbitrary script and trick other admin users into downloading malicious files which can cause severe damage to the organization using opennms.
Weakness: CWE-79
Which versions are affected by CVE-2021-25933?
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-2021-25933?
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-2021-25933 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-25933 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-jjhw-5mxp-2g2q.