CVE-2021-42142

CRITICAL

Contiki-ng Tinydtls < 2018-08-30 - Improper Exception Handling

Title source: rule
STIX 2.1

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.

References (3)

Scores

CVSS v3 9.8
EPSS 0.0204
EPSS Percentile 83.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-755 CWE-770
Status published
Products (1)
contiki-ng/tinydtls < 2018-08-30
Published Jan 23, 2024
Tracked Since Feb 18, 2026