CVE-2019-6486

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

A DoS vulnerability in the crypto/elliptic implementations of the P-521 and P-384 elliptic curves may let an attacker craft inputs that consume excessive amounts of CPU. These inputs might be delivered via TLS handshakes, X.509 certificates, JWT tokens, ECDH shares or ECDSA signatures. In some cases, if an ECDH private key is reused more than once, the attack can also lead to key recovery.

Go, en versiones anteriores a la 1.10.8 y las versiones 1.11.x anteriores a la 1.11.5, gestionan de manera incorrecta las curvas elípticas P-521 y P-384, que permiten que los atacantes provoquen una denegación de servicio (consumo de CPU) o lleven a cabo ataques de recuperación de la clave privada ECDH.