CVE-2021-42141

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html Third Party Advisory VDB Entry
https://github.com/contiki-ng/tinydtls/issues/27 Patch
https://seclists.org/fulldisclosure/2024/Jan/14 Mailing List Third Party Advisory
http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2024/Jan/14
https://github.com/contiki-ng/tinydtls/issues/27 Patch
https://seclists.org/fulldisclosure/2024/Jan/14 Mailing List Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:27

Type Values Removed Values Added
References
  • () http://seclists.org/fulldisclosure/2024/Jan/14 -
References () http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html - Third Party Advisory, VDB Entry () http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html - Third Party Advisory, VDB Entry
References () https://github.com/contiki-ng/tinydtls/issues/27 - Patch () https://github.com/contiki-ng/tinydtls/issues/27 - Patch
References () https://seclists.org/fulldisclosure/2024/Jan/14 - Mailing List, Third Party Advisory () https://seclists.org/fulldisclosure/2024/Jan/14 - Mailing List, Third Party Advisory

30 Jan 2024, 14:30

Type Values Removed Values Added
CWE CWE-755
CPE cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*
First Time Contiki-ng tinydtls
Contiki-ng
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.8
References () https://seclists.org/fulldisclosure/2024/Jan/14 - () https://seclists.org/fulldisclosure/2024/Jan/14 - Mailing List, Third Party Advisory
References () https://github.com/contiki-ng/tinydtls/issues/27 - () https://github.com/contiki-ng/tinydtls/issues/27 - Patch
References () http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html - () http://packetstormsecurity.com/files/176625/Contiki-NG-tinyDTLS-Denial-Of-Service.html - Third Party Advisory, VDB Entry

22 Jan 2024, 23:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-01-22 23:15

Updated : 2025-06-20 19:15

NVD link : CVE-2021-42141

Mitre link : CVE-2021-42141

CVE.ORG link : CVE-2021-42141

JSON object : View

Products Affected

contiki-ng

  • tinydtls
CWE
CWE-755

Improper Handling of Exceptional Conditions