# The Heartbleed Bug The Heartbleed Bug was a critical OpenSSL flaw announced in April 2014 that let attackers pull private data straight from server memory. Security expert Bruce Schneier called it "catastrophic" and rated it an 11 on a 1-to-10 scale, and the vulnerability was packaged with its own branded website and bleeding-heart logo that turned a dry CVE entry into a mainstream news story. ## Origin On April 7th, 2014, Google security researcher Neel Mehta reported a flaw in every OpenSSL version in the 1.0.1 series that leaked data from the server's host memory[3]. The root cause was a bounds-check mistake in the implementation of the TLS Heartbeat Extension defined in RFC 6520, a protocol meant to keep connections alive by echoing back a small arbitrary payload[4]. By lying about how big the payload was (claiming 64 KiB for a 1 KiB message, for example), an attacker could get the server to pad its reply with whatever happened to be sitting in adjacent memory[2]. The flaw was logged as CVE-2014-0160 and formally announced on April 10th, 2014[3]. Audit logs later suggested the vulnerable code had been live in production builds for roughly two years before the public disclosure, with no reliable way to tell whether anyone had already been exploiting it[1]. - **Platform:** OpenSSL / Heartbleed.com (public disclosure) - **Creator:** Unknown - **Date:** 2014 ## Overview The Heartbleed Bug sat inside OpenSSL's Heartbeat Extension and let an attacker send a crafted request that tricked the server into returning random chunks of memory, up to 64 KiB per hit[2]. Those memory dumps could contain anything the server was handling at the moment: session cookies, usernames and passwords, personal data, or even the private encryption keys that identified the service itself[1]. Roughly two-thirds of websites used OpenSSL for encryption, and around half a million sites were thought to be affected[1]. Part of what made The Heartbleed Bug stick in internet memory was its packaging. A dedicated Heartbleed.com site, complete with a bleeding-heart logo, laid the problem out in plain language and gave journalists an easy visual hook[2]. The branding turned a CVE entry into a cultural reference point, and later high-impact vulnerabilities (Shellshock, POODLE, Logjam) borrowed the same playbook of a catchy name and a landing page[3]. ## Frequently Asked Questions ### What is The Heartbleed Bug? A critical vulnerability in OpenSSL's Heartbeat Extension that let attackers read up to 64 KiB of a server's active memory per request, exposing passwords, session data, and even private encryption keys[2]. ### Where did The Heartbleed Bug come from? Google researcher Neel Mehta reported the flaw on April 7th, 2014; it was caused by a missing bounds check in OpenSSL's implementation of the TLS Heartbeat Extension defined in RFC 6520[4]. ### What does The Heartbleed Bug mean? It was one of the broadest internet security failures to date, with roughly half a million websites affected, and Bruce Schneier publicly rated it an 11 on a 1-to-10 severity scale[1]. ### How do you use The Heartbleed Bug? It is a security vulnerability rather than a meme format, but it is routinely referenced as the archetype for "branded" vulnerabilities with their own logo and landing page[2]. ### Is The Heartbleed Bug still popular? Most affected servers were patched within weeks of the April 2014 disclosure, so the active threat is largely historical, but The Heartbleed Bug is still cited as a landmark moment in internet security coverage[3]. ## References 1. [https://www.bbc.com/news/technology-26969629]() 2. [http://heartbleed.com/]() 3. [https://knowyourmeme.com/memes/the-heartbleed-bug]() 4. [https://tools.ietf.org/html/rfc6520]() --- Source: https://meme.com/memes/the-heartbleed-bug Published by meme.com — The Internet Meme Library