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medium advisory

Hitachi Energy GMS600 Vulnerable to Bleichenbacher Attack via CVE-2022-4304

Hitachi Energy GMS600 versions 1.3.0 and 1.3.1 are affected by CVE-2022-4304, a vulnerability in the OpenSSL RSA Decryption implementation; an attacker could exploit this timing-based side channel to recover plaintext across a network in a Bleichenbacher-style attack by sending trial messages to the server and recording processing times, eventually decrypting application data.

GMS600 versions 1.3.0 and 1.3.1 bleichenbacher timing attack openssl critical infrastructure
2r 1t 1c