Vulnerability Details : CVE-2021-42147
Buffer over-read vulnerability in the dtls_sha256_update function in Contiki-NG tinyDTLS through master branch 53a0d97 allows remote attackers to cause a denial of service via crafted data packet.
Vulnerability category: Denial of service
Products affected by CVE-2021-42147
- cpe:2.3:a:contiki-ng:tinydtls:2018-08-30:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42147
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42147
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
3.9
|
5.2
|
NIST | 2024-02-01 |
CWE ids for CVE-2021-42147
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-42147
-
https://seclists.org/fulldisclosure/2024/Jan/20
Full Disclosure: Buffer over-read in dtls_sha256_update of TinyDTLSMailing List;Third Party Advisory
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