|The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 0.9.8zc,
1.0.0o, and 1.0.1j does not properly handle attempts to use
unsupported protocols, which allows remote attackers to cause a denial
of service (NULL pointer dereference and daemon crash) via an
unexpected handshake, as demonstrated by an SSLv3 handshake to a
no-ssl3 application with certain error handling. NOTE: this issue
became relevant after the CVE-2014-3568 fix.