CVE-2016-6556

Public Exploit

OpenNMS Stored XSS via SNMP Agent Data

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.

References

Link	Tags
https://www.rapid7.com/blog/post/2016/11/15/r7-2016-24-opennms-stored-xss-via-snmp-cve-2016-6555-cve-2016-6556/	third party advisory exploit
https://github.com/OpenNMS/opennms/pull/1019	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2016-6556?: CVE-2016-6556 has been scored as a high severity vulnerability.
How to fix CVE-2016-6556?: To fix CVE-2016-6556, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6556 being actively exploited in the wild?: It is possible that CVE-2016-6556 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-6556?: CVE-2016-6556 affects OpenNMS OpenNMS.

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Description

Category

CWE-79 – Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

Frequently Asked Questions