#VU58241 Improper Authorization in Mendix Applications using Mendix 8 and Mendix Applications using Mendix 9 - CVE-2021-42025

Vulnerability identifier: #VU58241

Vulnerability risk: Medium

CVSSv4.0: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-42025

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mendix Applications using Mendix 8
Client/Desktop applications / Other client software
Mendix Applications using Mendix 9
Client/Desktop applications / Other client software

Vendor: Siemens

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to applications built with affected versions of Mendix Studio Pro do not properly control write access for certain client actions. A remote authenticated attacker can manipulate the content of specific objects regardless of whether they have write access.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mendix Applications using Mendix 8: before 8.18.13

Mendix Applications using Mendix 9: before 9.6.2

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-779699.pdf

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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