CVE Vulnerability

CVE-2021-37740

A denial of service vulnerability exists in MDT's firmware for the KNXnet/IP Secure router SCN-IP100.03 and KNX IP interface SCN-IP000.03 before v3.0.4, that allows a remote attacker to turn the device unresponsive to all requests on the KNXnet/IP Secure layer, until the device is rebooted, via a SESSION_REQUEST frame with a modified total length field.

7.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf Release Notes Vendor Advisory
https://github.com/robertguetzkow/CVE-2021-37740 Exploit Release Notes
https://www.mdt.de/EN_IP_Interface_Router.html Broken Link
Configurations

Configuration 1
Information

Published : 2022-04-20 08:15

Updated : 2022-05-03 06:07

NVD link : CVE-2021-37740

Mitre link : CVE-2021-37740

Products Affected
No products.
CWE
NVD-CWE-noinfo