CVE-2021-42142
Contiki-NG tinyDTLS DTLS Denial of Service and False-Positive Packet Drop
Description
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.
INFO
Published Date :
Jan. 23, 2024, 10:15 p.m.
Last Modified :
Oct. 21, 2024, 11:35 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
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-2021-42142.
| URL | Resource |
|---|---|
| https://github.com/contiki-ng/tinydtls/issues/24 | Issue Tracking Patch |
| https://seclists.org/fulldisclosure/2024/Jan/15 | Mailing List Third Party 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-42142 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-42142 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 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-770 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jan. 31, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/contiki-ng/tinydtls/issues/24 No Types Assigned https://github.com/contiki-ng/tinydtls/issues/24 Issue Tracking, Patch Changed Reference Type https://seclists.org/fulldisclosure/2024/Jan/15 No Types Assigned https://seclists.org/fulldisclosure/2024/Jan/15 Mailing List, Third Party Advisory Added CWE NIST CWE-755 Added CPE Configuration OR *cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:* versions up to (including) 2018-08-30 -
CVE Received by [email protected]
Jan. 23, 2024
Action Type Old Value New Value Added Description An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops. Added Reference MITRE https://github.com/contiki-ng/tinydtls/issues/24 [No types assigned] Added Reference MITRE https://seclists.org/fulldisclosure/2024/Jan/15 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-42142 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-2021-42142
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.10%
score
0.50876
percentile