Updating/Patching OpenSSL First, you need to identify if you are running servers with a vulnerable OpenSSL version, chances are you will be (see the official site for the version list). If you are, you must first patch OpenSSL to fix the main vulnerability (heartbleed).

A missing bounds check in the handling of the TLS heartbeat extension can be used to reveal up to 64kB of memory to a connected client or server (a.k.a. Heartbleed). This issue did not affect versions of OpenSSL prior to 1.0.1. Reported by Neel Mehta. Fixed in OpenSSL 1.0.1g (Affected 1.0.1-1.0.1f) CVE-2014-0076 (OpenSSL advisory) 14 February 2014: Technical Bulletin: Heartbleed - Raritan A critical security issue (CVE-2014-0160) was found in OpenSSL version 1.0.1 through 1.0.1f. Also, variably referred to as the Heartbleed or Heartbeat bug. The Heartbleed bug is in the implementation of the heartbeat TLS extension. /source/index.html - OpenSSL OpenSSL 3.0 is the next major version of OpenSSL that is currently in development and includes the new FIPS Object Module. A pre-release version of this is available below. This is for testing only. It should not be used in production. Information and notes about OpenSSL 3.0 are available on the OpenSSL Wiki The Heartbleed Bug: How a Forgotten Bounds Check Broke the Feb 07, 2020

OpenSSL 'Heartbleed' vulnerability (CVE-2014-0160) | CISA

OpenSSL - Wikipedia OpenSSL is a software library for applications that secure communications over computer networks against eavesdropping or need to identify the party at the other end. It is widely used by Internet servers, including the majority of HTTPS websites.. OpenSSL contains an open-source implementation of the SSL and TLS protocols. The core library, written in the C programming language, implements OpenSSL Heartbleed vulnerability - Bitcoin Apr 11, 2014

[CVE-2014-0160] OpenSSL 1.0.1 Vulnerability (Heartbleed

Bug is in the OpenSSL's implementation of the TLS/DTLS (transport layer security protocols) heartbeat extension (RFC6520). When it is exploited it leads to the leak of memory contents from the server to the client and from the client to the server. What makes the Heartbleed Bug unique? Heartbleed (CVE-2014-0160): An overview of the problem and The version of OpenSSL can be obtained by using the openssl version -a command. Versions of OpenSSL 1.0.1x that were built before April 7, 2014 are vulnerable. Versions of OpenSSL 1.0.1x that were Critical OpenSSL 'Heartbleed' bug puts encrypted Apr 08, 2014 What is Heartbleed? And What You Can Do About It