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diff --git a/modules/ssl/ssl_engine_config.c b/modules/ssl/ssl_engine_config.c
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index 979489c..3d6443b 100644
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--- a/modules/ssl/ssl_engine_config.c
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+++ b/modules/ssl/ssl_engine_config.c
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@@ -1485,6 +1485,10 @@ static const char *ssl_cmd_protocol_parse(cmd_parms *parms,
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#endif
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else if (strcEQ(w, "all")) {
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thisopt = SSL_PROTOCOL_ALL;
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+#ifndef OPENSSL_NO_SSL3
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+ /* by default, ALL kw doesn't turn on SSLv3 */
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+ thisopt &= ~SSL_PROTOCOL_SSLV3;
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+#endif
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}
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else {
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return apr_pstrcat(parms->temp_pool,
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diff --git a/modules/ssl/ssl_engine_init.c b/modules/ssl/ssl_engine_init.c
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index b0fcf81..ab6f263 100644
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--- a/modules/ssl/ssl_engine_init.c
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+++ b/modules/ssl/ssl_engine_init.c
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@@ -568,6 +568,28 @@ static apr_status_t ssl_init_ctx_tls_extensions(server_rec *s,
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}
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#endif
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+/*
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+ * Enable/disable SSLProtocol. If the mod_ssl enables protocol
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+ * which is disabled by default by OpenSSL, show a warning.
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+ * "option" is for example SSL_OP_NO_SSLv3.
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+ */
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+static void ssl_set_ctx_protocol_option(server_rec *s,
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+ SSL_CTX *ctx,
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+ long option,
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+ int enabled,
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+ const char *name)
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+{
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+ if (!enabled) {
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+ SSL_CTX_set_options(ctx, option);
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+ }
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+ else if (SSL_CTX_get_options(ctx) & option) {
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+ SSL_CTX_clear_options(ctx, option);
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+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(02904)
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+ "Allowing SSLProtocol %s even though it is disabled "
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+ "by OpenSSL by default on this system", name);
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+ }
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+}
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+
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static apr_status_t ssl_init_ctx_protocol(server_rec *s,
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apr_pool_t *p,
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apr_pool_t *ptemp,
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@@ -735,9 +757,13 @@ static apr_status_t ssl_init_ctx_protocol(server_rec *s,
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}
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if (prot == TLS1_1_VERSION && protocol & SSL_PROTOCOL_TLSV1) {
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prot = TLS1_VERSION;
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+ ssl_set_ctx_protocol_option(s, ctx, SSL_OP_NO_TLSv1,
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+ protocol & SSL_PROTOCOL_TLSV1, "TLSv1");
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}
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#ifndef OPENSSL_NO_SSL3
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if (prot == TLS1_VERSION && protocol & SSL_PROTOCOL_SSLV3) {
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+ ssl_set_ctx_protocol_option(s, ctx, SSL_OP_NO_SSLv3,
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+ protocol & SSL_PROTOCOL_SSLV3, "SSLv3");
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prot = SSL3_VERSION;
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}
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#endif
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