CVE-2021-42143

First published: Wed Jan 24 2024(Updated: )

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.

Credit: cve@mitre.org

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• vendor/contiki-ng
• canonical/contiki-ng tinydtls
• version/contiki-ng tinydtls/2018-08-30