#VU25260 Protection Mechanism Failure in Siemens products - CVE-2019-13924

Vulnerability identifier: #VU25260

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-13924

CWE-ID: CWE-693

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SCALANCE X-200
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X-200 IRT
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X-300
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Siemens

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to the affected device does not send the X-Frame-Option header in the administrative web interface. A remote attacker can perform a click-jacking attack, bypass implemented security restrictions and elevate privileges on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SCALANCE X-200: before 5.2.4

SCALANCE X-200 IRT: All versions

SCALANCE X-300: before 4.1.3

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External links
https://cert-portal.siemens.com/productcert/pdf/ssa-951513.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.