CVEvulnerability

CVE-2021-42142

9.8 CRITICAL Published 2024-01-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-01-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weaknesses
CWE-755, CWE-770

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.

Affected configurations

• contiki-ng tinydtls (<= 2018-08-30)

Related

Weakness · CWE (2)

  • CWE-755 Improper Handling of Exceptional Conditions weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References