High severity · published Oct 26, 2021
CVE-2021-40344
An issue was discovered in Nagios XI 5.8.5
7.2
CVSS
64.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)64.8% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NX
Nagios XI · Nagios
5.8.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40344
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40344
Release Notes
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
Not Applicable
https://synacktiv.com
Exploit
https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf
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