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VULNERABILITIES

CVE-2021-42146 Details

Description

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://seclists.org/fulldisclosure/2024/Jan/19 CVE
https://seclists.org/fulldisclosure/2024/Jan/19 CVEMailing ListThird Party Advisory
https://seclists.org/fulldisclosure/2024/Jan/19 [email protected]Mailing ListThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-755Improper Handling of Exceptional Conditions[email protected]
CWE-303Incorrect Implementation of Authentication AlgorithmCISA-ADP

Affected Products

ProductVersions
contiki-ng tinydtls
2018-08-30

CPE

  • cpe:2.3:a:contiki-ng:tinydtls:2018-08-30:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

7 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-42146
NVD Published Date:
Jan 24, 2024
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]