How does the Heartbleed attack work?

The Heartbleed attack works by tricking servers into leaking information stored in their memory. So any information handled by web servers is potentially vulnerable. That includes passwords, credit card numbers, medical records, and the contents of private email or social media messages.

How does Heartbleed vulnerability happen?

OpenSSL processes in the machine that are responding to Heartbeat requests don’t verify if the payload size is same as what is specified in length field. Thus, the machine copies extra data residing in memory after the payload into the response. This is how the Heartbleed vulnerability works.

What was the root cause of Heartbleed?

The Heartbleed vulnerability arose because OpenSSL’s implementation of the heartbeat functionality was missing a crucial safeguard: the computer that received the heartbeat request never checked to make sure the request was actually as long as it claimed to be.

What is the Heartbleed virus?

The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet.

Who is responsible for the Heartbleed Bug?

Robin Seggelmann, a programmer based in Germany, submitted the code in an update submitted at 11:59pm on New Year’s Eve, 2011. It was supposed to enable a function called “Heartbeat” in OpenSSL, the software package used by nearly half of all web servers to enable secure connections.

Is Heartbleed still a threat?

The reason why Heartbleed is still out there is by no means due to a lack of patches. Most services relying on OpenSSL will have a patch available to remove the Heartbleed threat. Apply the patch and the Heartbleed threat is gone, as simple as that.

How long did it take to fix Heartbleed?

The Heartbleed vulnerability was discovered and fixed in 2014, yet today—five years later—there are still unpatched systems. The Heartbleed vulnerability was introduced into the OpenSSL crypto library in 2012. It was discovered and fixed in 2014, yet today—five years later—there are still unpatched systems.