Merge two bug fixes from the OpenSSL 1.1.1 branch, which is still

under a free license:

1. If the three X509_load_*(3) functions are called with a NULL
file argument, do not return 1 to the caller because the return
value 1 means "i loaded one certificate or CRL into the store".

2. When calling PEM load functions, do not ask the user for a
password in an interactive manner.

This includes parts of the following commits:

  commit   c0452248ea1a59a41023a4765ef7d9825e80a62b
  Author:  Rich Salz <rsalz@openssl.org>
  Date:    Thu Apr 20 15:33:42 2017 -0400
  Message: [...] Remove NULL checks and allow a segv to occur. [...]

  commit   db854bb14a7010712cfc02861731399b1b587474
  Author:  Bernd Edlinger <bernd.edlinger@hotmail.de>
  Date:    Mon Aug 7 18:02:53 2017 +0200
  Message: Avoid surpising password dialog in X509 file lookup.

OK tb@

1 files changed, 4 insertions, 8 deletions

diff --git a/src/lib/libcrypto/x509/by_file.c b/src/lib/libcrypto/x509/by_file.c
index f719636412..db66617d2b 100644
--- a/src/lib/libcrypto/x509/by_file.c
+++ b/src/lib/libcrypto/x509/by_file.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: by_file.c,v 1.22 2021/11/01 20:53:08 tb Exp $ */
+/* $OpenBSD: by_file.c,v 1.23 2021/11/10 09:00:21 schwarze Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -127,8 +127,6 @@ X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
         int i, count = 0;
         X509 *x = NULL;
 
-        if (file == NULL)
-                return (1);
         in = BIO_new(BIO_s_file_internal());
 
         if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
@@ -138,7 +136,7 @@ X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type)
 
         if (type == X509_FILETYPE_PEM) {
                 for (;;) {
-                        x = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
+                        x = PEM_read_bio_X509_AUX(in, NULL, NULL, "");
                         if (x == NULL) {
                                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
                                     PEM_R_NO_START_LINE) && (count > 0)) {
@@ -185,8 +183,6 @@ X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
         int i, count = 0;
         X509_CRL *x = NULL;
 
-        if (file == NULL)
-                return (1);
         in = BIO_new(BIO_s_file_internal());
 
         if ((in == NULL) || (BIO_read_filename(in, file) <= 0)) {
@@ -196,7 +192,7 @@ X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type)
 
         if (type == X509_FILETYPE_PEM) {
                 for (;;) {
-                        x = PEM_read_bio_X509_CRL(in, NULL, NULL, NULL);
+                        x = PEM_read_bio_X509_CRL(in, NULL, NULL, "");
                         if (x == NULL) {
                                 if ((ERR_GET_REASON(ERR_peek_last_error()) ==
                                     PEM_R_NO_START_LINE) && (count > 0)) {
@@ -250,7 +246,7 @@ X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type)
                 X509error(ERR_R_SYS_LIB);
                 return 0;
         }
-        inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL);
+        inf = PEM_X509_INFO_read_bio(in, NULL, NULL, "");
         BIO_free(in);
         if (!inf) {
                 X509error(ERR_R_PEM_LIB);