Rating:

## Challenge
> It lead to memory leakage between servers and clients rending large number of private keys accessible. (one word)

## Solution
The answer is the Heartbleed vulnerability ([CVE-2014-0160](https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2014-0160)).

The flag is **Heartbleed**.

Original writeup (https://github.com/R3dCr3sc3nt/AlexCTF/blob/master/TR2-SSL_0day/README.md).