Denial of service in Siemens EN100 Ethernet Module



Published: 2022-06-15
Risk High
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2022-30937
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
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

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU64401

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 - Memory corruption

Exploit availability: No

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

External links

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


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



###SIDEBAR###