CVE-2021-42142

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/23/2024

Last Modified6/11/2025

Sourcenvd

Honeypot Sightings0

Affected Products

contiki-ng:tinydtls

Weaknesses (CWE)

CWE-755CWE-770

References

https://github.com/contiki-ng/tinydtls/issues/24(cve@mitre.org)

https://seclists.org/fulldisclosure/2024/Jan/15(cve@mitre.org)

http://seclists.org/fulldisclosure/2024/Jan/15(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/contiki-ng/tinydtls/issues/24(af854a3a-2127-422b-91ae-364da2661108)

https://seclists.org/fulldisclosure/2024/Jan/15(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.