CVE-2021-42142

Published Jan 23, 2024

Last updated 5 months ago

CVSS critical 9.8

Overview

Description: 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.
Source: cve@mitre.org
NVD status: Modified

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Weaknesses

nvd@nist.gov: CWE-755
134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-770

Hype score: Not currently trending

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"
      }
    ]
  }
]

References