Vulnerability identifier: #VU64401

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2022-30937

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
EN100 Ethernet module DNP3 IP variant
Hardware solutions / Routers & switches, VoIP, GSM, etc
EN100 Ethernet module IEC 104 variant
Hardware solutions / Security hardware applicances
EN100 Ethernet module IEC 61850 variant
Hardware solutions / Security hardware applicances
EN100 Ethernet module Modbus TCP variant
Hardware solutions / Security hardware applicances
EN100 Ethernet module PROFINET IO variant
Hardware solutions / Security hardware applicances

Vendor: Siemens

Description

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

The vulnerability exists due to a boundary error when parsing specially crafted HTTP packets to /txtrace endpoint. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

EN100 Ethernet module DNP3 IP variant: All versions

EN100 Ethernet module IEC 104 variant: All versions

EN100 Ethernet module IEC 61850 variant: All versions

EN100 Ethernet module Modbus TCP variant: All versions

EN100 Ethernet module PROFINET IO variant: All versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-693555.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 Internet.

Is there known malware, which exploits this vulnerability?

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