Vulnerability Details : CVE-2021-37740
Potential exploit
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-37740
- cpe:2.3:o:mdt:scn-ip000.03_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:mdt:scn-ip100.03_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-37740
13.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 94 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-37740
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
References for CVE-2021-37740
-
https://www.mdt.de/EN_IP_Interface_Router.html
404 - MDT technologiesBroken Link
-
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
GitHub - robertguetzkow/CVE-2021-37740: PoC for DoS vulnerability CVE-2021-37740 in firmware v3.0.3 of SCN-IP100.03 and SCN-IP000.03 by MDT. The bug has been fixed in firmware v3.0.4.Exploit;Release Notes;Third Party Advisory
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