CVE-2021-42143
CRITICALContiki-ng Tinydtls < 2018-08-30 - Infinite Loop
Title source: ruleDescription
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. An infinite loop bug exists during the handling of a ClientHello handshake message. This bug allows remote attackers to cause a denial of service by sending a malformed ClientHello handshake message with an odd length of cipher suites, which triggers an infinite loop (consuming all resources) and a buffer over-read that can disclose sensitive information.
References (2)
Core 2
Core References
Mailing List, Third Party Advisory
https://seclists.org/fulldisclosure/2024/Jan/16
Mailing List
http://seclists.org/fulldisclosure/2024/Jan/16
Scores
CVSS v3
9.1
EPSS
0.0035
EPSS Percentile
57.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-835
Status
published
Products (1)
contiki-ng/tinydtls
< 2018-08-30
Published
Jan 24, 2024
Tracked Since
Feb 18, 2026