#VU58242 Improper Authorization in Mendix Applications using Mendix 8 and Mendix Applications using Mendix 9 - CVE-2021-42026

Vulnerability identifier: #VU58242

Vulnerability risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-42026

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 read access for certain client actions. A remote authenticated attacker can retrieve specific attributes of arbitrary objects, regardless of whether they have read 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.