RHSA-2016:0008: openssl security update

Description

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)and Transport Layer Security (TLS v1) protocols, as well as afull-strength, general purpose cryptography library.A flaw was found in the way TLS 1.2 could use the MD5 hash function forsigning ServerKeyExchange and Client Authentication packets during a TLShandshake. A man-in-the-middle attacker able to force a TLS connection touse the MD5 hash function could use this flaw to conduct collision attacksto impersonate a TLS server or an authenticated TLS client. (CVE-2015-7575)All openssl users are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue. For the update to takeeffect, all services linked to the OpenSSL library must be restarted, orthe system rebooted.