This update for openssl1 fixes the following security issues:
CVE-2018-0737: The RSA Key generation algorithm has been shown to be
vulnerable to a cache timing side channel attack. An attacker with sufficient
access to mount cache timing attacks during the RSA key generation process
could have recovered the private key (bsc#1089039)
CVE-2018-0732: During key agreement in a TLS handshake using a DH(E) based
ciphersuite a malicious server could have sent a very large prime value to the
client. This caused the client to spend an unreasonably long period of time
generating a key for this prime resulting in a hang until the client has
finished. This could be exploited in a Denial Of Service attack (bsc#1097158)
Blinding enhancements for ECDSA and DSA (bsc#1097624, bsc#1098592)