Fiche vulnérabilité
CVE-2021-42143 : faille critique contiki-ng tinydtls (CVSS 9.1)
Description
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.
En bref
- Sévérité
- Critique (CVSS 9.1)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Exploitation active
- Non signalée par la CISA
- Publication
- 24 janv. 2024
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- contiki-ng tinydtls