libs/iksemel/patches/002-secure_gnutls_options.patch

   1 Last-Update: 2015-10-28
   2 Bug-Upstream: https://github.com/meduketto/iksemel/issues/48
   3 Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=803204
   4 From: Marc Dequènes (duck) <duck@duckcorp.org>
   5 Description: fix security problem (and compatibility problem with servers rejecting low grade ciphers).
   6
   7 --- a/src/stream.c
   8 +++ b/src/stream.c
   9 @@ -62,13 +62,9 @@
  10
  11  static int
  12  handshake (struct stream_data *data)
  13  {
  14 -       const int protocol_priority[] = { GNUTLS_TLS1, GNUTLS_SSL3, 0 };
  15 -       const int kx_priority[] = { GNUTLS_KX_RSA, 0 };
  16 -       const int cipher_priority[] = { GNUTLS_CIPHER_3DES_CBC, GNUTLS_CIPHER_ARCFOUR, 0};
  17 -       const int comp_priority[] = { GNUTLS_COMP_ZLIB, GNUTLS_COMP_NULL, 0 };
  18 -       const int mac_priority[] = { GNUTLS_MAC_SHA, GNUTLS_MAC_MD5, 0 };
  19 +       const char *priority_string = "SECURE256:+SECURE192:-VERS-TLS-ALL:+VERS-TLS1.2";
  20         int ret;
  21
  22         if (gnutls_global_init () != 0)
  23                 return IKS_NOMEM;
  24 @@ -79,13 +75,9 @@
  25         if (gnutls_init (&data->sess, GNUTLS_CLIENT) != 0) {
  26                 gnutls_certificate_free_credentials (data->cred);
  27                 return IKS_NOMEM;
  28         }
  29 -       gnutls_protocol_set_priority (data->sess, protocol_priority);
  30 -       gnutls_cipher_set_priority(data->sess, cipher_priority);
  31 -       gnutls_compression_set_priority(data->sess, comp_priority);
  32 -       gnutls_kx_set_priority(data->sess, kx_priority);
  33 -       gnutls_mac_set_priority(data->sess, mac_priority);
  34 +       gnutls_priority_set_direct(data->sess, priority_string, NULL);
  35         gnutls_credentials_set (data->sess, GNUTLS_CRD_CERTIFICATE, data->cred);
  36
  37         gnutls_transport_set_push_function (data->sess, (gnutls_push_func) tls_push);
  38         gnutls_transport_set_pull_function (data->sess, (gnutls_pull_func) tls_pull);