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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 93%
VendorProductVersion
mdtscn-ip000.03_firmware
𝑥
< 3.0.4
mdtscn-ip100.03_firmware
𝑥
< 3.0.4
𝑥
= Vulnerable software versions
References
https://github.com/robertguetzkow/CVE-2021-37740
https://www.mdt.de/EN_IP_Interface_Router.html
https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf
https://github.com/robertguetzkow/CVE-2021-37740
https://www.mdt.de/EN_IP_Interface_Router.html
https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf