MGASA-2018-0365

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MGASA-2018-0365

Summary: Updated openssl packages fix security vulnerabilities

Details: Updated openssl packages fix security vulnerabilities: During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause 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 (CVE-2018-0732). The OpenSSL 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 recover the private key (CVE-2018-0737).

References: https://advisories.mageia.org/MGASA-2018-0365.html, https://bugs.mageia.org/show_bug.cgi?id=22934, https://www.openssl.org/news/secadv/20180416.txt, https://openwall.com/lists/oss-security/2018/04/16/3, https://usn.ubuntu.com/3692-1/, https://usn.ubuntu.com/3628-1/