Vulnerability in Contiki-Ng Tinydtls
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 · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/contiki-ng/tinydtls/issues/27 (Patch)
- packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html (VDB Entry, Third Party Advisory)
- seclists.org/fulldisclosure/2024/Jan/14 (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-42141?
- CVE-2021-42141 is a critical-severity vulnerability in Contiki-Ng Tinydtls, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2024-01-22.
- How severe is CVE-2021-42141?
- Critical severity. CVSS v3 base score is 9.8 out of 10.