CVE-2016-6556 OpenNMS Stored XSS via SNMP Agent Data
Attackers can inject malicious scripts via SNMP responses that execute in the OpenNMS web UI, potentially compromising user accounts.
- 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
- None listed
What is CVE-2016-6556?
CVE-2016-6556 is a high-severity cross-site scripting vulnerability in OpenNMS, published on 15 Jun 2022. 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
OpenNMS version 18.0.1 and prior are vulnerable to a stored XSS issue due to insufficient filtering of SNMP agent supplied data. By creating a malicious SNMP 'sysName' or 'sysContact' response, an attacker can store an XSS payload which will trigger when a user of the web UI views the data. This issue was fixed in version 18.0.2, released on September 20, 2016.
Weakness: CWE-79
Which versions are affected by CVE-2016-6556?
It affects 1 product.
Products include Opennms Opennms.
How do I fix CVE-2016-6556?
No fix has been published for CVE-2016-6556 yet. Limit exposure of the affected software until one is available.
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-2016-6556 being exploited?
There is no known exploitation of CVE-2016-6556 in the wild and no public exploit code.
Other vulnerabilities in OpenNMS
Sources
Also known as GHSA-gg9p-hvqm-vj23.