Merge r1873888 from trunk:

*) mod_ssl: Disable client verification on ACME ALPN challenges. Fixes github issue mod_md#172 (icing/mod_md#172). [Michael Kaufmann <mail michael-kaufmann.ch>, Stefan Eissing] Submitted by: icing Reviewed by: icing, jim, ylavic git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1874283 13f79535-47bb-0310-9956-ffa450edef68
apache · Feb 21, 2020 · 8604164 · 8604164
1 parent 8b28097
commit 8604164
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diff --git a/CHANGES b/CHANGES
@@ -1,6 +1,10 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.4.42
 
+  *) mod_ssl: Disable client verification on ACME ALPN challenges. Fixes github
+     issue mod_md#172 (https://github.com/icing/mod_md/issues/172).
+     [Michael Kaufmann <mail michael-kaufmann.ch>, Stefan Eissing]
+
   *) mod_ssl: use OPENSSL_init_ssl() to initialise OpenSSL on versions 1.1+.
      [Graham Leggett]
 

diff --git a/modules/ssl/ssl_engine_kernel.c b/modules/ssl/ssl_engine_kernel.c
@@ -2362,6 +2362,7 @@ static apr_status_t init_vhost(conn_rec *c, SSL *ssl, const char *servername)
                 if (set_challenge_creds(c, servername, ssl, cert, key) != APR_SUCCESS) {
                     return APR_EGENERAL;
                 }
+                SSL_set_verify(ssl, SSL_VERIFY_NONE, ssl_callback_SSLVerify);
             }
             else {
                 ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(02044)
@@ -2742,6 +2743,7 @@ int ssl_callback_alpn_select(SSL *ssl,
                 if (set_challenge_creds(c, servername, ssl, cert, key) != APR_SUCCESS) {
                     return SSL_TLSEXT_ERR_ALERT_FATAL;
                 }
+                SSL_set_verify(ssl, SSL_VERIFY_NONE, ssl_callback_SSLVerify);
             }
         }
     }