CVE-2021-37740
"MDT SCN-IP Series KNXnet/IP Secure Router Denial of Service"
Description
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.
INFO
Published Date :
April 20, 2022, 8:15 p.m.
Last Modified :
Nov. 21, 2024, 6:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-37740 has a 5 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-37740
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-37740.
| URL | Resource |
|---|---|
| https://github.com/robertguetzkow/CVE-2021-37740 | Exploit Release Notes Third Party Advisory |
| https://www.mdt.de/EN_IP_Interface_Router.html | Broken 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 | Exploit Release Notes Third Party Advisory |
| https://www.mdt.de/EN_IP_Interface_Router.html | Broken Link |
| https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
None
None
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.
security poc denial-of-service cve
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-37740 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-37740 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/robertguetzkow/CVE-2021-37740 Added Reference https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf Added Reference https://www.mdt.de/EN_IP_Interface_Router.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 03, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/robertguetzkow/CVE-2021-37740 No Types Assigned https://github.com/robertguetzkow/CVE-2021-37740 Exploit, Release Notes, Third Party Advisory Changed Reference Type https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf No Types Assigned https://www.mdt.de/download/MDT_CL_SCN_IP_03_IP_Interface_Router.pdf Release Notes, Vendor Advisory Changed Reference Type https://www.mdt.de/EN_IP_Interface_Router.html No Types Assigned https://www.mdt.de/EN_IP_Interface_Router.html Broken Link Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:mdt:scn-ip000.03_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.0.4 OR cpe:2.3:h:mdt:scn-ip000.03:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:mdt:scn-ip100.03_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 3.0.4 OR cpe:2.3:h:mdt:scn-ip100.03:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-37740 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-37740
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.32 }} -0.31%
score
0.70373
percentile