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Best Heartbleed Explanation Ever

Best Heartbleed explanation ever by xkcd:

HeartBleed explanation


The Heartbleed Bug:

The Heartbleed bug allows anyone on the Internet to read the memory of the systems protected by the vulnerable versions of the OpenSSL software. This compromises the secret keys used to identify the service providers and to encrypt the traffic, the names and passwords of the users and the actual content. This allows attackers to eavesdrop on communications, steal data directly from the services and users and to impersonate services and users.

Answering the Critical Question: Can You Get Private SSL Keys Using Heartbleed?: TL;DR Yes.

The Heartbleed Challenge:

We confirmed that both of these individuals have the private key and that it was obtained through Heartbleed exploits.

Test your server for Heartbleed (CVE-2014-0160)

Heartbleed by Bruce Schneier:

"Catastrophic" is the right word. On the scale of 1 to 10, this is an 11.

What Heartbleed Can Teach The OSS Community About Marketing:

I want to take a moment to point at the marketing aspects of it: how the knowledge about Heartbleed managed to spread within a day and move, literally, hundreds of thousands of people to remediate the problem.

Heartbleed is much better marketed than typical for the OSS community, principally because it has a name, a logo, and a dedicated web presence.

Critical crypto bug exposes Yahoo Mail, other passwords Russian roulette-style:

All of this means that applying the OpenSSL patch is only the starting point on the multi-step path of Heartbleed recovery. Website operators should strongly consider replacing their X.509 certificates after applying the update and getting all users and administrators to change passwords as well. While it’s possible that none of this data has been compromised, there’s no way to rule it out, either.

Wild at Heart: Were Intelligence Agencies Using Heartbleed in November 2013?:

A lot of the narratives around Heartbleed have viewed this bug through a worst-case lens, supposing that it might have been used for some time, and that there might be tricks to obtain private keys somewhat reliably with it. At least the first half of that scenario is starting to look likely.

Using Heartbleed PoC for Hijacking User Sessions En Masse:

Matthew Sullivan posted a blog post earlier today about using CVE-2014-0160 to hijack user sessions from vulnerable servers. I altered the proof of concept code written by Jared Stafford to continuously query a given server for memory chunks and parse those chunks for session ids.

Critical crypto bug in OpenSSL opens two-thirds of the Web to eavesdropping:

The researchers who discovered the vulnerability, however, were less optimistic about the risks, saying the bug makes it possible for attackers to surreptitiously bypass virtually all TLS protections and to retrieve sensitive data residing in the memory of computers or servers running OpenSSL-powered software.

"We attacked ourselves from outside, without leaving a trace," they wrote. "Without using any privileged information or credentials we were able steal from ourselves the secret keys used for our X.509 certificates, user names and passwords, instant messages, emails and business critical documents and communication."

Heartbleed Bug: What Can You Do?:

Finally, given the growing public awareness of this bug, it’s probable that phishers and other scam artists will take full advantage of the situation. Avoid responding to emailed invitations to reset your password; rather, visit the site manually, either using a trusted bookmark or searching for the site in question.

How to protect yourself from Heartbleed:

The Heartbleed vulnerability is one of the worst Internet security problems we have seen. I’ll be writing more about what we can learn from Heartbleed and the response to it.

For now, here is a quick checklist of what you can do to protect yourself.

From jc.

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