#VU65669 Incorrect default permissions in Checkmk - CVE-2021-40904

Vulnerability identifier: #VU65669

Vulnerability risk: Low

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-40904

CWE-ID: CWE-276

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Checkmk
Server applications / Other server solutions

Vendor: tribe29 GmbH

Description

The vulnerability allows a remote user to execute arbitrary PHP code on the system.

The vulnerability exists due to insecure configuration of Dokuwiki. A remote user with access to the web management interface can execute arbitrary PHP code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Checkmk: 1.5.0 i1 - 1.5.0

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External links
https://github.com/Edgarloyola/CVE-2021-40904

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.