CVE-2021-42141

CRITICAL

9.8

Description

An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with different epoch numbers in the packets Client_Hello, Client_key_exchange, and Change_cipher_spec, which may cause denial of service.

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

Published1/22/2024

Last Modified6/20/2025

Sourcenvd

Honeypot Sightings0

Affected Products

contiki-ng:tinydtls

Weaknesses (CWE)

CWE-755CWE-755

References

http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html(cve@mitre.org)

https://github.com/contiki-ng/tinydtls/issues/27(cve@mitre.org)

https://seclists.org/fulldisclosure/2024/Jan/14(cve@mitre.org)

http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html(af854a3a-2127-422b-91ae-364da2661108)

http://seclists.org/fulldisclosure/2024/Jan/14(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/contiki-ng/tinydtls/issues/27(af854a3a-2127-422b-91ae-364da2661108)

https://seclists.org/fulldisclosure/2024/Jan/14(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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