Vulnerability identifier: #VU70390

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-46351

CWE-ID: CWE-400

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
SCALANCE X204RNA (HSR)
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X204RNA (PRP)
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X204RNA EEC (HSR)
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X204RNA EEC (PRP)
Hardware solutions / Routers & switches, VoIP, GSM, etc
SCALANCE X204RNA EEC (PRP/HSR)
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor:

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker on the local network can send specially crafted PROFINET DCP packets, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-363821.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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