Enforce the minimum TLS version requirement for QUIC.

ok tb@

1 files changed, 9 insertions, 1 deletions

diff --git a/src/lib/libssl/ssl_versions.c b/src/lib/libssl/ssl_versions.c
index 06e26b8059..4a58f14ccd 100644
--- a/src/lib/libssl/ssl_versions.c
+++ b/src/lib/libssl/ssl_versions.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_versions.c,v 1.23 2022/06/30 11:17:50 tb Exp $ */
+/* $OpenBSD: ssl_versions.c,v 1.24 2022/09/11 18:13:30 jsing Exp $ */
 /*
  * Copyright (c) 2016, 2017 Joel Sing <jsing@openbsd.org>
  *
@@ -177,6 +177,14 @@ ssl_enabled_tls_version_range(SSL *s, uint16_t *min_ver, uint16_t *max_ver)
             s->internal->min_tls_version, s->internal->max_tls_version))
                 return 0;
 
+        /* QUIC requires a minimum of TLSv1.3. */
+        if (SSL_is_quic(s)) {
+                if (max_version < TLS1_3_VERSION)
+                        return 0;
+                if (min_version < TLS1_3_VERSION)
+                        min_version = TLS1_3_VERSION;
+        }
+
         if (min_ver != NULL)
                 *min_ver = min_version;
         if (max_ver != NULL)