Input validation error in Siemens products - CVE-2022-31766

Vulnerability identifier: #VU68287

CSH Severity: High

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-31766

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The vulnerability exists due to insufficient validation of user-supplied input when TCP Event service is enabled. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

SCALANCE WAM763-1
SCALANCE WAM766-1
SCALANCE WAM766-1 6GHz
SCALANCE WAM766-1 EEC
SCALANCE WAM766-1 EEC 6GHz
SCALANCE WUM763-1
SCALANCE WUM766-1
SCALANCE WUM766-1 6GHz
RUGGEDCOM RM1224 LTE
SCALANCE M804PB
SCALANCE M812-1 ADSL-Router (Annex A)
SCALANCE M812-1 ADSL-Router (Annex B)
SCALANCE M816-1 ADSL-Router (Annex A)
SCALANCE M816-1 ADSL-Router (Annex B)
SCALANCE M826-2 SHDSL-Router
SCALANCE M874-2
SCALANCE M874-3
SCALANCE M876-3
SCALANCE M876-4
SCALANCE MUM853-1
SCALANCE MUM856-1
SCALANCE S615

Install updates from vendor's website.

RUGGEDCOM RM1224 LTE - update to 7.1.2
SCALANCE M804PB - update to 7.1.2
SCALANCE M812-1 ADSL-Router (Annex A) - update to 7.1.2
SCALANCE M812-1 ADSL-Router (Annex B) - update to 7.1.2
SCALANCE M816-1 ADSL-Router (Annex A) - update to 7.1.2
SCALANCE M816-1 ADSL-Router (Annex B) - update to 7.1.2
SCALANCE M826-2 SHDSL-Router - update to 7.1.2
SCALANCE M874-2 - update to 7.1.2
SCALANCE M874-3 - update to 7.1.2
SCALANCE M876-3 - update to 7.1.2
SCALANCE M876-4 - update to 7.1.2
SCALANCE MUM853-1 - update to 7.1.2
SCALANCE MUM856-1 - update to 7.1.2
SCALANCE S615 - update to 7.1.2

• https://cert-portal.siemens.com/productcert/pdf/ssa-697140.pdf

• Denial of service in Siemens SCALANCE and RUGGEDCOM Products