CVE-2021-42142

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

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
https://github.com/contiki-ng/tinydtls/issues/24	Issue Tracking Patch
https://seclists.org/fulldisclosure/2024/Jan/15	Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2024/Jan/15
https://github.com/contiki-ng/tinydtls/issues/24	Issue Tracking Patch
https://seclists.org/fulldisclosure/2024/Jan/15	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2024-01-23 22:15

Updated : 2024-11-21 06:27

NVD link : CVE-2021-42142

Mitre link : CVE-2021-42142

CVE.ORG link : CVE-2021-42142

JSON object : View

Products Affected

contiki-ng

tinydtls

CWE

CWE-755

Improper Handling of Exceptional Conditions

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2021-42142", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2024-01-23T22:15:16.270", "references": [{"url": "https://github.com/contiki-ng/tinydtls/issues/24", "tags": ["Issue Tracking", "Patch"], "source": "cve@mitre.org"}, {"url": "https://seclists.org/fulldisclosure/2024/Jan/15", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://seclists.org/fulldisclosure/2024/Jan/15", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/contiki-ng/tinydtls/issues/24", "tags": ["Issue Tracking", "Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://seclists.org/fulldisclosure/2024/Jan/15", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-755"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en Contiki-NG tinyDTLS a trav\u00e9s de la rama maestra 53a0d97. Los servidores DTLS manejan mal el uso inicial de un n\u00famero de \u00e9poca grande. Esta vulnerabilidad permite a atacantes remotos provocar una denegaci\u00f3n de servicio y ca\u00eddas de paquetes falsos positivos."}], "lastModified": "2024-11-21T06:27:20.907", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:contiki-ng:tinydtls:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E938DF84-2663-4516-87E3-B7E46789F6A1", "versionEndIncluding": "2018-08-30"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}