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Question:
The best description of the attack being used if an attacker uses a Metasploit auxiliary exploit to send a series of small messages to a server at regular intervals and the server responds with 64 bytes of data from its memory is the Heartbleed attack.
The Heartbleed vulnerability is a security flaw in the OpenSSL cryptography library that allows an attacker to read sensitive information from the memory of a vulnerable server. The vulnerability is caused by a buffer over-read bug in the OpenSSL code, which can be exploited by sending a specially crafted packet to the server.
In a Heartbleed attack, the attacker sends a series of small messages to the server, each containing a request for a small amount of data from the server's memory. The server responds with the requested data, but also includes an additional 64 bytes of data from its memory. The attacker can use this technique to gradually read sensitive information from the server's memory, including private keys, passwords, and other sensitive data.
Metasploit is a popular framework for developing and executing exploits, including exploits for the Heartbleed vulnerability. The Metasploit auxiliary exploit mentioned in the question is likely designed to automate the process of sending the small messages to the server and capturing the responses, making it easier for an attacker to carry out a Heartbleed attack.
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