CVE-2021-42141

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.12%
Third-Party Advisory packetstormsecurity.com Third-Party Advisory seclists.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/contiki-ng/tinydtls/issues/27 patch
http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html third party advisory vdb entry
https://seclists.org/fulldisclosure/2024/Jan/14 third party advisory mailing list
http://seclists.org/fulldisclosure/2024/Jan/14

Frequently Asked Questions

What is the severity of CVE-2021-42141?
CVE-2021-42141 has been scored as a critical severity vulnerability.
How to fix CVE-2021-42141?
To fix CVE-2021-42141, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42141 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-42141 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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