Vulnerability DatabaseCVE-2021-42142
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CVE-2021-42142
Published At:January 23, 2024
Updated At:April 06, 2026
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers mishandle the early use of a large epoch number. This vulnerability allows remote attackers to cause a denial of service and false-positive packet drops.
Related Resources (3)
https://github.com/contiki-ng/tinydtls/issues/24
https://seclists.org/fulldisclosure/2024/Jan/15
http://seclists.org/fulldisclosure/2024/Jan/15
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Handling of Exceptional Conditions
CWE-755
Allocation of Resources Without Limits or Throttling
CWE-770
EPSS
Base Score:
2.04