cve-2008-4989.c

[Simon Josefsson]

Here is a self-test that detects whether the installed libgnutls is
vulnerable or not.

Build it:

gcc -o cve-2008-4989 cve-2008-4989.c -lgnutls

Output for vulnerable libraries:

address@hidden:~/src/gnutls/tests master$ LD_PRELOAD=/usr/lib/libgnutls.so 
./cve-2008-4989 ; echo $?
./cve-2008-4989: verify_status: 0
1
address@hidden:~/src/gnutls/tests master$

Output for fixed libraries:

address@hidden:~/src/gnutls/tests master$ ./cve-2008-4989 ; echo $?
0
address@hidden:~/src/gnutls/tests master$

This will part of future releases to test regressions:

http://git.savannah.gnu.org/gitweb/?p=gnutls.git;a=commitdiff;h=4d0486baaf9d65d965ecefd38647f4518bf0d0d7

/Simon

/*
 * Copyright (C) 2008 Free Software Foundation
 *
 * Author: Simon Josefsson
 *
 * This file is part of GNUTLS.
 *
 * GNUTLS is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * GNUTLS is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNUTLS; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <error.h>
#include <string.h>

#include <gnutls/gnutls.h>
#include <gnutls/x509.h>

static const char *pem_certs[] = {
  "-----BEGIN CERTIFICATE-----\n"
  "MIIB6zCCAVQCCQCgwnB/k0WZrDANBgkqhkiG9w0BAQUFADA9MQswCQYDVQQGEwJE\n"
  "RTEXMBUGA1UEChMOR05VIFRMUyBBdHRhY2sxFTATBgNVBAMTDGludGVybWVkaWF0\n"
  "ZTAeFw0wODExMDMxMjA1MDRaFw0wODEyMDMxMjA1MDRaMDcxCzAJBgNVBAYTAkRF\n"
  "MRcwFQYDVQQKEw5HTlUgVExTIEF0dGFjazEPMA0GA1UEAxMGc2VydmVyMIGfMA0G\n"
  "CSqGSIb3DQEBAQUAA4GNADCBiQKBgQDKdL9g5ErMLOLRCjiomZlNLhy0moWGaKIW\n"
  "aX6vyUIfh8d6FcArHoKoqhmX7ckvod50sOYPojQesDpl7gVaQNA6Ntr1VCcuNPef\n"
  "UKWtEwL0Qu9JbPnUoIYd7mAaqVQgFp6W6yzV/dp63LH4XSdzBMhpZ/EU6vZoE8Sv\n"
  "VLdqj5r6jwIDAQABMA0GCSqGSIb3DQEBBQUAA4GBAH4QRR7sZEbjW00tXYk/3O/Z\n"
  "96AxJNg0F78W5B68gaJrLJ7DTE2RTglscuEq1+2Jyb4AIziwXpYqxgwcP91QpH97\n"
  "XfwdXIcyjYvVLHiKmkQj2zJTY7MeyiEQQ2it8VstZG2fYmi2EiMZIEnyJ2JJ7bA7\n"
  "bF7pG7Cg3oEHUM0H5KUU\n"
  "-----END CERTIFICATE-----\n",
  "-----BEGIN CERTIFICATE-----\n"
  "MIICADCCAWmgAwIBAgIJAIZ4nkHQAqTFMA0GCSqGSIb3DQEBBQUAMDUxCzAJBgNV\n"
  "BAYTAkRFMRcwFQYDVQQKEw5HTlUgVExTIEF0dGFjazENMAsGA1UEAxMEcm9vdDAe\n"
  "Fw0wODExMDMxMjA0NDVaFw0wODEyMDMxMjA0NDVaMD0xCzAJBgNVBAYTAkRFMRcw\n"
  "FQYDVQQKEw5HTlUgVExTIEF0dGFjazEVMBMGA1UEAxMMaW50ZXJtZWRpYXRlMIGf\n"
  "MA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDvBpW8sAhIuUmNvcBE6wv/q7MtM1Z9\n"
  "2I1SDL8eJ8I2nPg6BlCX+OIqNruynj8J7uPEQ04ZLwLxNXoyZa8057YFyrKLOvoj\n"
  "5IfBtidsLWYv6PO3qqHJXVvwGdS7PKMuUlsjucCRyXVgQ07ODF7piqoVFi9KD99w\n"
  "AU5+9plGrZNP/wIDAQABoxAwDjAMBgNVHRMEBTADAQH/MA0GCSqGSIb3DQEBBQUA\n"
  "A4GBAGPg+M+8MsB6zHN2o+jAtyqovrTTwmzVWEgfEH/aHC9+imGZRQ5lFNc2vdny\n"
  "AgaJ9/izO5S6Ibb5zUowN2WhoUJOVipuQa2m9AviOgheoU7tmANC9ylm/pRkKy/0\n"
  "n5UVzlKxDhRp/xBb7MWOw3KEQjiAf2Z3wCLcCPUqcJUdJC4v\n"
  "-----END CERTIFICATE-----\n",
  "-----BEGIN CERTIFICATE-----\n"
  "MIIEIDCCAwigAwIBAgIQNE7VVyDV7exJ9C/ON9srbTANBgkqhkiG9w0BAQUF\n"
  "ADCBqTELMAkGA1UEBhMCVVMxFTATBgNVBAoTDHRoYXd0ZSwgSW5jLjEoMCYG\n"
  "A1UECxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZpc2lvbjE4MDYGA1UE\n"
  "CxMvKGMpIDIwMDYgdGhhd3RlLCBJbmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNl\n"
  "IG9ubHkxHzAdBgNVBAMTFnRoYXd0ZSBQcmltYXJ5IFJvb3QgQ0EwHhcNMDYx\n"
  "MTE3MDAwMDAwWhcNMzYwNzE2MjM1OTU5WjCBqTELMAkGA1UEBhMCVVMxFTAT\n"
  "BgNVBAoTDHRoYXd0ZSwgSW5jLjEoMCYGA1UECxMfQ2VydGlmaWNhdGlvbiBT\n"
  "ZXJ2aWNlcyBEaXZpc2lvbjE4MDYGA1UECxMvKGMpIDIwMDYgdGhhd3RlLCBJ\n"
  "bmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNlIG9ubHkxHzAdBgNVBAMTFnRoYXd0\n"
  "ZSBQcmltYXJ5IFJvb3QgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK\n"
  "AoIBAQCsoPD7gFnUnMekz52hWXMJEEUMDSxuaPFsW0hoSVk3/AszGcJ3f8wQ\n"
  "LZU0HObrTQmnHNK4yZc2AreJ1CRfBsDMRJSUjQJib+ta3RGNKJpchJAQeg29\n"
  "dGYvajig4tVUROsdB58Hum/u6f1OCyn1PoSgAfGcq/gcfomk6KHYcWUNo1F7\n"
  "7rzSImANuVud37r8UVsLr5iy6S7pBOhih94ryNdOwUxkHt3Ph1i6Sk/KaAcd\n"
  "HJ1KxtUvkcx8cXIcxcBn6zL9yZJclNqFwJu/U30rCfSMnZEfl2pSy94JNqR3\n"
  "2HuHUETVPm4pafs5SSYeCaWAe0At6+gnhcn+Yf1+5nyXHdWdAgMBAAGjQjBA\n"
  "MA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBR7\n"
  "W0XPr87Lev0xkhpqtvNG61dIUDANBgkqhkiG9w0BAQUFAAOCAQEAeRHAS7OR\n"
  "tvzw6WfUDW5FvlXok9LOAz/t2iWwHVfLHjp2oEzsUHboZHIMpKnxuIvW1oeE\n"
  "uzLlQRHAd9mzYJ3rG9XRbkREqaYB7FViHXe4XI5ISXycO1cRrK1zN44veFyQ\n"
  "aEfZYGDm/Ac9IiAXxPcW6cTYcvnIc3zfFi8VqT79aie2oetaupgf1eNNZAqd\n"
  "E8hhuvU5HIe6uL17In/2/qxAeeWsEG89jxt5dovEN7MhGITlNgDrYyCZuen+\n"
  "MwS7QcjBAvlEYyCegc5C09Y/LHbTY5xZ3Y+m4Q6gLkH3LpVHz7z9M/P2C2F+\n"
  "fpErgUfCJzDupxBdN49cOSvkBPB7jVaMaA==\n"
  "-----END CERTIFICATE-----\n"
};

static const char *pem_ca = {
  "-----BEGIN CERTIFICATE-----\n"
  "MIIEIDCCAwigAwIBAgIQNE7VVyDV7exJ9C/ON9srbTANBgkqhkiG9w0BAQUF\n"
  "ADCBqTELMAkGA1UEBhMCVVMxFTATBgNVBAoTDHRoYXd0ZSwgSW5jLjEoMCYG\n"
  "A1UECxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZpc2lvbjE4MDYGA1UE\n"
  "CxMvKGMpIDIwMDYgdGhhd3RlLCBJbmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNl\n"
  "IG9ubHkxHzAdBgNVBAMTFnRoYXd0ZSBQcmltYXJ5IFJvb3QgQ0EwHhcNMDYx\n"
  "MTE3MDAwMDAwWhcNMzYwNzE2MjM1OTU5WjCBqTELMAkGA1UEBhMCVVMxFTAT\n"
  "BgNVBAoTDHRoYXd0ZSwgSW5jLjEoMCYGA1UECxMfQ2VydGlmaWNhdGlvbiBT\n"
  "ZXJ2aWNlcyBEaXZpc2lvbjE4MDYGA1UECxMvKGMpIDIwMDYgdGhhd3RlLCBJ\n"
  "bmMuIC0gRm9yIGF1dGhvcml6ZWQgdXNlIG9ubHkxHzAdBgNVBAMTFnRoYXd0\n"
  "ZSBQcmltYXJ5IFJvb3QgQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK\n"
  "AoIBAQCsoPD7gFnUnMekz52hWXMJEEUMDSxuaPFsW0hoSVk3/AszGcJ3f8wQ\n"
  "LZU0HObrTQmnHNK4yZc2AreJ1CRfBsDMRJSUjQJib+ta3RGNKJpchJAQeg29\n"
  "dGYvajig4tVUROsdB58Hum/u6f1OCyn1PoSgAfGcq/gcfomk6KHYcWUNo1F7\n"
  "7rzSImANuVud37r8UVsLr5iy6S7pBOhih94ryNdOwUxkHt3Ph1i6Sk/KaAcd\n"
  "HJ1KxtUvkcx8cXIcxcBn6zL9yZJclNqFwJu/U30rCfSMnZEfl2pSy94JNqR3\n"
  "2HuHUETVPm4pafs5SSYeCaWAe0At6+gnhcn+Yf1+5nyXHdWdAgMBAAGjQjBA\n"
  "MA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBR7\n"
  "W0XPr87Lev0xkhpqtvNG61dIUDANBgkqhkiG9w0BAQUFAAOCAQEAeRHAS7OR\n"
  "tvzw6WfUDW5FvlXok9LOAz/t2iWwHVfLHjp2oEzsUHboZHIMpKnxuIvW1oeE\n"
  "uzLlQRHAd9mzYJ3rG9XRbkREqaYB7FViHXe4XI5ISXycO1cRrK1zN44veFyQ\n"
  "aEfZYGDm/Ac9IiAXxPcW6cTYcvnIc3zfFi8VqT79aie2oetaupgf1eNNZAqd\n"
  "E8hhuvU5HIe6uL17In/2/qxAeeWsEG89jxt5dovEN7MhGITlNgDrYyCZuen+\n"
  "MwS7QcjBAvlEYyCegc5C09Y/LHbTY5xZ3Y+m4Q6gLkH3LpVHz7z9M/P2C2F+\n"
  "fpErgUfCJzDupxBdN49cOSvkBPB7jVaMaA==\n"
  "-----END CERTIFICATE-----\n"
};

#define CHAIN_LENGTH (sizeof (pem_certs) / sizeof (pem_certs[0]))

int
main (int argc, char *argv[])
{
  int ret;
  gnutls_x509_crt_t certs[3];
  gnutls_x509_crt_t ca;
  gnutls_datum_t tmp;
  size_t i;
  unsigned int verify_status;

  ret = gnutls_global_init ();
  if (ret != 0)
    {
      printf ("%d: %s\n", ret, gnutls_strerror (ret));
      return EXIT_FAILURE;
    }

  for (i = 0; i < CHAIN_LENGTH; i++)
    {
      ret = gnutls_x509_crt_init (&certs[i]);
      if (ret < 0)
        error (EXIT_FAILURE, 0, "gnutls_x509_crt_init[%d]: %s", i,
               gnutls_strerror (ret));

      tmp.data = pem_certs[i];
      tmp.size = strlen (pem_certs[i]);

      ret = gnutls_x509_crt_import (certs[i], &tmp, GNUTLS_X509_FMT_PEM);
      if (ret < 0)
        error (EXIT_FAILURE, 0, "gnutls_x509_crt_import[%d]: %s", i,
               gnutls_strerror (ret));
    }

  ret = gnutls_x509_crt_init (&ca);
  if (ret < 0)
    error (EXIT_FAILURE, 0, "gnutls_x509_crt_init: %s", gnutls_strerror (ret));

  tmp.data = pem_ca;
  tmp.size = strlen (pem_ca);

  ret = gnutls_x509_crt_import (ca, &tmp, GNUTLS_X509_FMT_PEM);
  if (ret < 0)
    error (EXIT_FAILURE, 0, "gnutls_x509_crt_import: %s",
           gnutls_strerror (ret));

  ret = gnutls_x509_crt_list_verify (certs, CHAIN_LENGTH,
                                     &ca, 1,
                                     NULL, 0,
                                     0, &verify_status);
  if (ret < 0)
    error (EXIT_FAILURE, 0, "gnutls_x509_crt_list_verify[%d]: %s", i,
           gnutls_strerror (ret));

  if (verify_status != (GNUTLS_CERT_INVALID | GNUTLS_CERT_SIGNER_NOT_FOUND))
    error (EXIT_FAILURE, 0, "verify_status: %d", verify_status);

  gnutls_global_deinit ();

  return 0;
}