CVE-2021-40344

Public Exploit

Description

An issue was discovered in Nagios XI 5.8.5. In the Custom Includes section of the Admin panel, an administrator can upload files with arbitrary extensions as long as the MIME type corresponds to an image. Therefore it is possible to upload a crafted PHP script to achieve remote command execution.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 67.21% Top 5%
Vendor Advisory nagios.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT release notes vendor advisory
https://synacktiv.com not applicable
https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-40344?
CVE-2021-40344 has been scored as a high severity vulnerability.
How to fix CVE-2021-40344?
To fix CVE-2021-40344, 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-2021-40344 being actively exploited in the wild?
It is possible that CVE-2021-40344 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~67% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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