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HTTP Fragmentation Attack

In an HTTP Fragmentation Attack, an attacker establishes a valid connection with a server, and then proceeds to send all of his or her HTTP traffic to the server in small fragments as slowly as possible. Some web servers (such as Apache) have improper timeout mechanisms, and therefore allow for this behavior. The web server is essentially allowing legitimate users with slow or intermittent connections to send their data fragmented to multiple packets. Waiting to receive such malicious user data causes the server to maintain long-lasting sessions and the attackers can cause exhaustion to the server’s connection table, resulting in a denial-of-service condition.

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