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CVE-2021-40344

HIGHCVSS 7.2/10EPSS 66.19%

Last modified

CVE-2021-40344 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 66.19% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
66.19%

99.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NagiosNagios Xi5.8.5

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-40344?
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.
How severe is CVE-2021-40344?
CVE-2021-40344 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 66.19% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40344?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40344?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST