This is errata/6.8/013_libressl.patch.siglibressl-v3.2.4

Various interoperability issues and memory leaks were discovered in
libcrypto and libssl.

The new verifier is not bug compatible with the old verifier and caused
many issues by failing to propagate errors correctly, returning different
error codes than some software was trained to expect and otherwise failing
when it shouldn't. While much of this is fixed in -current, it's still not
perfect, so switching back to the legacy verifier is preferable at this
point.

Other included fixes:

* Unbreak DTLS retransmissions for flights that include a CCS
* Only check BIO_should_read() on read and BIO_should_write() on write
* Implement autochain for the TLSv1.3 server
* Use the legacy verifier for AUTO_CHAIN
* Implement exporter for TLSv1.3
* Free alert_data and phh_data in tls13_record_layer_free()
* Plug leak in x509_verify_chain_dup()
* Free the policy tree in x509_vfy_check_policy()

Original commits by jsing and tb

ok inoguchi jsing

1 files changed, 12 insertions, 3 deletions

diff --git a/src/lib/libssl/ssl_lib.c b/src/lib/libssl/ssl_lib.c
index 6e375e1c09..1cf64d1301 100644
--- a/src/lib/libssl/ssl_lib.c
+++ b/src/lib/libssl/ssl_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssl_lib.c,v 1.234 2020/09/24 18:12:00 jsing Exp $ */
+/* $OpenBSD: ssl_lib.c,v 1.234.4.1 2021/02/03 07:06:13 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -1710,8 +1710,17 @@ SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
     const char *label, size_t llen, const unsigned char *p, size_t plen,
     int use_context)
 {
-        return (tls1_export_keying_material(s, out, olen,
-            label, llen, p, plen, use_context));
+        if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) {
+                if (!use_context) {
+                        p = NULL;
+                        plen = 0;
+                }
+                return tls13_exporter(s->internal->tls13, label, llen, p, plen,
+                    out, olen);
+        }
+
+        return (tls1_export_keying_material(s, out, olen, label, llen, p, plen,
+            use_context));
 }
 
 static unsigned long