Protocol Downgrade Vulnerability in OpenSSL 1.0.1

CVE-2014-3511 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 1.0.1 before 1.0.1i allows man-in-the-middle attackers to force the use of TLS 1.0 by triggering ClientHello message fragmentation in communication between a client and server that both support later TLS versions, related to a "protocol downgrade" issue.

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