Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2021-42141
- cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42141
0.20%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42141
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | 2024-01-30 |
CWE ids for CVE-2021-42141
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-42141
-
http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html
Contiki-NG tinyDTLS Denial Of Service ≈ Packet StormThird Party Advisory;VDB Entry
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https://github.com/contiki-ng/tinydtls/issues/27
One incorrect handshake is completed with differenct epoch numbers · Issue #27 · contiki-ng/tinydtls · GitHubPatch
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https://seclists.org/fulldisclosure/2024/Jan/14
Full Disclosure: Incorrect handshake in TinyDTLSMailing List;Third Party Advisory
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