The Marvin Attack is a new side-channel attack on cryptographic implementations of RSA in which the attacker decrypts previously captured ciphertext by measuring, over a network, server response times to specially crafted messages. The attacker also may forge signatures with the same key as the one used for decryption. Red Hat published the principles and technical background of the Marvin Attack in September of 2023.Since that time, we have identified lots of other vulnerable implementations and have shipped fixes. Note that most of the CVEs in applications that use OpenSSL have only received
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