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Overview
Comment:Fix the client-side SSL connection setup so that it actually verifies the hostname on the certification from the server.
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Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: aaab2a15d1dfc22f5453c2bad8f25ecf518ed3eef9a7fa6f4c5bd69ab4e4b075
User & Date: drh 2021-06-15 00:39:17
Context
2021-06-15
01:30
Update the change log for the TLS security patch. ... (check-in: 3c1a2764 user: drh tags: trunk)
01:00
Fix the client-side SSL connection setup so that it actually verifies the hostname on the certification from the server. ... (check-in: 8126093e user: drh tags: branch-2.14)
00:58
Fix the client-side SSL connection setup so that it actually verifies the hostname on the certification from the server. ... (check-in: 7d85e21f user: drh tags: branch-2.15)
00:39
Fix the client-side SSL connection setup so that it actually verifies the hostname on the certification from the server. ... (check-in: aaab2a15 user: drh tags: trunk)
2021-06-14
20:43
Update the built-in SQLite to the latest 3.36.0 beta, including the bug fix to the authorizer callback such that it uses SQLITE_DROP_INDEX, not SQLITE_DROP_TEMP_INDEX, for attached indexes. ... (check-in: a9917d4f user: drh tags: trunk)
Changes
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Changes to src/http_ssl.c.

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**    g.url.name      Name of the proxy server, if proxying.
**    pUrlData->port  TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int ssl_open(UrlData *pUrlData){
  X509 *cert;


  ssl_global_init();
  if( pUrlData->useProxy ){
    int rc;
    char *connStr = mprintf("%s:%d", g.url.name, pUrlData->port);
    BIO *sBio = BIO_new_connect(connStr);
    free(connStr);







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**    g.url.name      Name of the proxy server, if proxying.
**    pUrlData->port  TCP/IP port to use.  Ex: 80
**
** Return the number of errors.
*/
int ssl_open(UrlData *pUrlData){
  X509 *cert;
  const char *zRemoteHost;

  ssl_global_init();
  if( pUrlData->useProxy ){
    int rc;
    char *connStr = mprintf("%s:%d", g.url.name, pUrlData->port);
    BIO *sBio = BIO_new_connect(connStr);
    free(connStr);
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      return 1;
    }

    pUrlData->path = pUrlData->proxyUrlPath;

    iBio = BIO_new_ssl(sslCtx, 1);
    BIO_push(iBio, sBio);

  }else{
    iBio = BIO_new_ssl_connect(sslCtx);

  }
  if( iBio==NULL ) {
    ssl_set_errmsg("SSL: cannot open SSL (%s)",
                    ERR_reason_error_string(ERR_get_error()));
    return 1;
  }
  BIO_get_ssl(iBio, &ssl);

#if (SSLEAY_VERSION_NUMBER >= 0x00908070) && !defined(OPENSSL_NO_TLSEXT)
  if( !SSL_set_tlsext_host_name(ssl, 
           (pUrlData->useProxy?pUrlData->hostname:pUrlData->name))
  ){
    fossil_warning("WARNING: failed to set server name indication (SNI), "
                  "continuing without it.\n");
  }
#endif

  SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);











  if( !pUrlData->useProxy ){
    char *connStr = mprintf("%s:%d", pUrlData->name, pUrlData->port);
    BIO_set_conn_hostname(iBio, connStr);
    free(connStr);
    if( BIO_do_connect(iBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to host %s:%d (%s)",







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      return 1;
    }

    pUrlData->path = pUrlData->proxyUrlPath;

    iBio = BIO_new_ssl(sslCtx, 1);
    BIO_push(iBio, sBio);
    zRemoteHost = pUrlData->hostname;
  }else{
    iBio = BIO_new_ssl_connect(sslCtx);
    zRemoteHost = pUrlData->name;
  }
  if( iBio==NULL ) {
    ssl_set_errmsg("SSL: cannot open SSL (%s)",
                    ERR_reason_error_string(ERR_get_error()));
    return 1;
  }
  BIO_get_ssl(iBio, &ssl);

#if (SSLEAY_VERSION_NUMBER >= 0x00908070) && !defined(OPENSSL_NO_TLSEXT)
  if( !SSL_set_tlsext_host_name(ssl, zRemoteHost)){


    fossil_warning("WARNING: failed to set server name indication (SNI), "
                  "continuing without it.\n");
  }
#endif

  SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
#if OPENSSL_VERSION_NUMBER >= 0x010002000
  if( !sslNoCertVerify ){
    X509_VERIFY_PARAM *param = 0;
    param = SSL_get0_param(ssl);
    if( !X509_VERIFY_PARAM_set1_host(param, zRemoteHost, strlen(zRemoteHost)) ){
      fossil_fatal("failed to set hostname.");
    }
    /* SSL_set_verify(ssl, SSL_VERIFY_PEER, 0); */
  }
#endif

  if( !pUrlData->useProxy ){
    char *connStr = mprintf("%s:%d", pUrlData->name, pUrlData->port);
    BIO_set_conn_hostname(iBio, connStr);
    free(connStr);
    if( BIO_do_connect(iBio)<=0 ){
      ssl_set_errmsg("SSL: cannot connect to host %s:%d (%s)",