CVE-2021-25299

Public Exploit

Description

Nagios XI version xi-5.7.5 is affected by cross-site scripting (XSS). The vulnerability exists in the file /usr/local/nagiosxi/html/admin/sshterm.php due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal his/her session cookies or it can be chained with the previous bugs to get one-click remote command execution (RCE) on the Nagios XI server.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 76.37% Top 5%
Third-Party Advisory packetstormsecurity.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://nagios.com product
https://assets.nagios.com/downloads/nagiosxi/versions.php product
https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md third party advisory exploit
http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-25299?
CVE-2021-25299 has been scored as a medium severity vulnerability.
How to fix CVE-2021-25299?
To fix CVE-2021-25299, 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-2021-25299 being actively exploited in the wild?
It is possible that CVE-2021-25299 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~76% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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