Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-42141

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.

Published

2024-01-22T23:15:08.120

Last Modified

2025-06-20T19:15:21.277

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

Weaknesses

Type: Primary
CWE-755
Type: Secondary
CWE-755

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	contiki-ng	tinydtls	≤ 2018-08-30	Yes

References

http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html Third Party Advisory, VDB Entry ([email protected])
https://github.com/contiki-ng/tinydtls/issues/27 Patch ([email protected])
https://seclists.org/fulldisclosure/2024/Jan/14 Mailing List, Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html Third Party Advisory, VDB Entry (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 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/fulldisclosure/2024/Jan/14 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)