CVE-2019-11873

CVE-2019-11873

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, total extensions length, PSK extension length, total identity length, and identity length contain their maximum value which is 2^16. The identity data field of the PSK extension of the packet contains the attack data, to be stored in the undefined memory (RAM) of the server. The size of the data is about 65 kB. Possibly the attacker can perform a remote code execution attack.

CVSS 9.8 · Critique · EPSS 9,2% · Correctif disponible

Publication

2019-05-23T12:54:46.000Z

Mise à jour

2024-08-04T23:03:32.893Z

Pile logicielle: system

Vérifiez votre serveur →