SUSE-SU-2018:2683-1

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SUSE-SU-2018:2683-1

Summary: Security update for compat-openssl098

Details: This update for compat-openssl098 fixes the following security issues: - 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) - 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-2018-0739: Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could have resulted in DoS (bsc#1087102).

References: https://www.suse.com/support/update/announcement/2018/suse-su-20182683-1/, https://bugzilla.suse.com/1087102, https://bugzilla.suse.com/1089039, https://bugzilla.suse.com/1097158, https://bugzilla.suse.com/1097624, https://bugzilla.suse.com/1098592, https://www.suse.com/security/cve/CVE-2018-0732, https://www.suse.com/security/cve/CVE-2018-0737, https://www.suse.com/security/cve/CVE-2018-0739