CVE-2018-0737

Se ha demostrado que el algoritmo de generación de claves RSA en OpenSSL es vulnerable a un ataque de sincronización de canal lateral de caché. Un atacante con acceso suficiente para montar ataques de sincronización de caché durante el proceso de generación de claves RSA podría recuperar la clave privada. Se ha solucionado en OpenSSL 1.1.0i-dev (afecta a 1.1.0-1.1.0h). Se ha solucionado en OpenSSL 1.0.2p-dev (afecta a 1.0.2b-1.0.2o).

OpenSSL RSA key generation was found to be vulnerable to cache side-channel attacks. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover parts of the private key.

Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. Guido Vranken discovered that OpenSSL incorrectly handled very large prime values during a key agreement. A remote attacker could possibly use this issue to consume resources, leading to a denial of service. Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. Various other issues were also addressed.