vendor/openssl/3.0.17vendor/openssl-3.0

1 files changed, 12 insertions, 1 deletions

diff --git a/ssl/record/rec_layer_d1.c b/ssl/record/rec_layer_d1.c
index 79de0219ec7b..3e5ec6aec4dd 100644
--- a/ssl/record/rec_layer_d1.c
+++ b/ssl/record/rec_layer_d1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2023 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2005-2025 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -606,6 +606,17 @@ int dtls1_read_bytes(SSL *s, int type, int *recvd_type, unsigned char *buf,
 #endif
                 s->shutdown |= SSL_RECEIVED_SHUTDOWN;
                 return 0;
+            } else if (alert_descr == SSL_AD_NO_RENEGOTIATION) {
+                /*
+                 * This is a warning but we receive it if we requested
+                 * renegotiation and the peer denied it. Terminate with a fatal
+                 * alert because if the application tried to renegotiate it
+                 * presumably had a good reason and expects it to succeed. In
+                 * the future we might have a renegotiation where we don't care
+                 * if the peer refused it where we carry on.
+                 */
+                SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_NO_RENEGOTIATION);
+                return -1;
             }
         } else if (alert_level == SSL3_AL_FATAL) {
             s->rwstate = SSL_NOTHING;