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37 lines
1.4 KiB
37 lines
1.4 KiB
7 years ago
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diff -up openssl-1.0.2k/ssl/s3_srvr.c.long-hello openssl-1.0.2k/ssl/s3_srvr.c
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--- openssl-1.0.2k/ssl/s3_srvr.c.long-hello 2017-03-09 17:59:26.000000000 +0100
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+++ openssl-1.0.2k/ssl/s3_srvr.c 2017-03-30 09:11:35.639338753 +0200
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@@ -899,6 +899,23 @@ int ssl3_send_hello_request(SSL *s)
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return ssl_do_write(s);
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}
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+/*
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+ * Maximum size (excluding the Handshake header) of a ClientHello message,
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+ * calculated as follows:
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+ *
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+ * 2 + # client_version
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+ * 32 + # only valid length for random
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+ * 1 + # length of session_id
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+ * 32 + # maximum size for session_id
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+ * 2 + # length of cipher suites
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+ * 2^16-2 + # maximum length of cipher suites array
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+ * 1 + # length of compression_methods
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+ * 2^8-1 + # maximum length of compression methods
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+ * 2 + # length of extensions
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+ * 2^16-1 # maximum length of extensions
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+ */
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+#define CLIENT_HELLO_MAX_LENGTH 131396
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+
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int ssl3_get_client_hello(SSL *s)
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{
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int i, j, ok, al = SSL_AD_INTERNAL_ERROR, ret = -1, cookie_valid = 0;
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@@ -930,7 +947,7 @@ int ssl3_get_client_hello(SSL *s)
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SSL3_ST_SR_CLNT_HELLO_B,
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SSL3_ST_SR_CLNT_HELLO_C,
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SSL3_MT_CLIENT_HELLO,
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- SSL3_RT_MAX_PLAIN_LENGTH, &ok);
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+ CLIENT_HELLO_MAX_LENGTH, &ok);
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if (!ok)
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return ((int)n);
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