Propagate record overflows to the record layer and alert.

ok beck@ tb@

1 files changed, 2 insertions, 3 deletions

diff --git a/src/lib/libssl/tls13_record.c b/src/lib/libssl/tls13_record.c
index ca61a94ff1..c856932b40 100644
--- a/src/lib/libssl/tls13_record.c
+++ b/src/lib/libssl/tls13_record.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tls13_record.c,v 1.5 2020/05/11 18:03:51 jsing Exp $ */
+/* $OpenBSD: tls13_record.c,v 1.6 2020/05/11 18:08:11 jsing Exp $ */
 /*
  * Copyright (c) 2018, 2019 Joel Sing <jsing@openbsd.org>
  *
@@ -145,11 +145,10 @@ tls13_record_recv(struct tls13_record *rec, tls13_read_cb wire_read,
                 if (!CBS_get_u16(&cbs, &rec_len))
                         return TLS13_IO_FAILURE;
 
-                /* XXX - record overflow alert. */
                 if ((rec_version >> 8) != SSL3_VERSION_MAJOR)
                         return TLS13_IO_RECORD_VERSION;
                 if (rec_len > TLS13_RECORD_MAX_CIPHERTEXT_LEN)
-                        return TLS13_IO_FAILURE;
+                        return TLS13_IO_RECORD_OVERFLOW;
 
                 rec->content_type = content_type;
                 rec->version = rec_version;