#VU80755 Improper access control in QMS Automotive - CVE-2023-40730

Vulnerability identifier: #VU80755

Vulnerability risk: Medium

CVSSv4.0: 5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-40730

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
QMS Automotive
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the QMS.Mobile module. A remote user can access confidential information, perform administrative functions or perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

QMS Automotive: before 12.39

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-147266.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.