Denial of service in SIemens PROFINET Stack Integrated on Interniche Stack

1) Resource exhaustion

EUVDB-ID: #VU62458

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-25622

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to the PROFINET (PNIO) stack, when integrated with the Interniche IP stack does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SIMATIC CFU DIQ: All versions

SIMATIC CFU PA: All versions

SIMATIC S7-300: All versions

SIMATIC S7-400 H V6: All versions

SIMATIC S7-400 PN/DP V7: All versions

SIMATIC S7-410 V8: All versions

SIMATIC S7-410 V10: All versions

SIMATIC TDC CP51M1: All versions

SIMATIC TDC CPU555: All versions

SIMATIC WinAC RTX: All versions

SIMIT Simulation Platform: All versions

SIMATIC S7-1500: before 2.0.0

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-446448.pdf

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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