tests/cve-2009-1415.c

   1 /*
   2  * Copyright (C) 2009-2012 Free Software Foundation, Inc.
   3  *
   4  * Author: Simon Josefsson
   5  *
   6  * This file is part of GnuTLS.
   7  *
   8  * GnuTLS is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * GnuTLS is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with GnuTLS; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 /*
  28  * Small code to reproduce the CVE-2009-1415 double-free problem.
  29  *
  30  * Build it using:
  31  *
  32  *  gcc -o cve-2009-1415 cve-2009-1415.c -lgnutls
  33  *
  34  * If your gnutls library is OK then running it will just print 'success!'.
  35  *
  36  * If your gnutls library is buggy, then running it will crash like this:
  37  *
  38  * ** glibc detected *** ./cve-2009-1415: munmap_chunk(): invalid pointer: 0xb7f80a9c ***
  39  * ======= Backtrace: =========
  40  * ...
  41  */
  42
  43 #include <stdio.h>
  44 #include <stdarg.h>
  45 #include <stdlib.h>
  46 #include <utils.h>
  47
  48 #include <gnutls/gnutls.h>
  49 #include <gnutls/x509.h>
  50 #include <gnutls/abstract.h>
  51
  52 static char dsa_cert[] =
  53     "-----BEGIN CERTIFICATE-----\n"
  54     "MIIDbzCCAtqgAwIBAgIERiYdRTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
  55     "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTQxWhcNMDgwNDE3MTMyOTQxWjA3MRsw\n"
  56     "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
  57     "Lm9yZzCCAbQwggEpBgcqhkjOOAQBMIIBHAKBgLmE9VqBvhoNxYpzjwybL5u2DkvD\n"
  58     "dBp/ZK2d8yjFoEe8m1dW8ZfVfjcD6fJM9OOLfzCjXS+7oaI3wuo1jx+xX6aiXwHx\n"
  59     "IzYr5E8vLd2d1TqmOa96UXzSJY6XdM8exXtLdkOBBx8GFLhuWBLhkOI3b9Ib7GjF\n"
  60     "WOLmMOBqXixjeOwHAhSfVoxIZC/+jap6bZbbBF0W7wilcQKBgGIGfuRcdgi3Rhpd\n"
  61     "15fUKiH7HzHJ0vT6Odgn0Zv8J12nCqca/FPBL0PCN8iFfz1Mq12BMvsdXh5UERYg\n"
  62     "xoBa2YybQ/Dda6D0w/KKnDnSHHsP7/ook4/SoSLr3OCKi60oDs/vCYXpNr2LelDV\n"
  63     "e/clDWxgEcTvcJDP1hvru47GPjqXA4GEAAKBgA+Kh1fy0cLcrN9Liw+Luin34QPk\n"
  64     "VfqymAfW/RKxgLz1urRQ1H+gDkPnn8l4EV/l5Awsa2qkNdy9VOVgNpox0YpZbmsc\n"
  65     "ur0uuut8h+/ayN2h66SD5out+vqOW9c3yDI+lsI+9EPafZECD7e8+O+P90EAXpbf\n"
  66     "DwiW3Oqy6QaCr9Ivo4GTMIGQMAwGA1UdEwEB/wQCMAAwGgYDVR0RBBMwEYIPdGVz\n"
  67     "dC5nbnV0bHMub3JnMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdDwEB/wQFAwMH\n"
  68     "gAAwHQYDVR0OBBYEFL/su87Y6HtwVuzz0SuS1tSZClvzMB8GA1UdIwQYMBaAFOk8\n"
  69     "HPutkm7mBqRWLKLhwFMnyPKVMAsGCSqGSIb3DQEBBQOBgQBCsrnfD1xzh8/Eih1f\n"
  70     "x+M0lPoX1Re5L2ElHI6DJpHYOBPwf9glwxnet2+avzgUQDUFwUSxOhodpyeaACXD\n"
  71     "o0gGVpcH8sOBTQ+aTdM37hGkPxoXjtIkR/LgG5nP2H2JRd5TkW8l13JdM4MJFB4W\n"
  72     "QcDzQ8REwidsfh9uKAluk1c/KQ==\n" "-----END CERTIFICATE-----\n";
  73
  74 const gnutls_datum_t dsa_cert_dat = {
  75         (void *) dsa_cert, sizeof(dsa_cert)
  76 };
  77
  78 int main(void)
  79 {
  80         gnutls_x509_crt_t crt;
  81         gnutls_pubkey_t pubkey;
  82         gnutls_datum_t data = { (void *) "foo", 3 };
  83         gnutls_datum_t sig = { (void *) "bar", 3 };
  84         int ret;
  85
  86         global_init();
  87
  88         ret = gnutls_x509_crt_init(&crt);
  89         if (ret < 0)
  90                 return 1;
  91
  92         ret = gnutls_pubkey_init(&pubkey);
  93         if (ret < 0)
  94                 return 1;
  95
  96         ret =
  97             gnutls_x509_crt_import(crt, &dsa_cert_dat,
  98                                    GNUTLS_X509_FMT_PEM);
  99         if (ret < 0)
 100                 return 1;
 101
 102         ret = gnutls_pubkey_import_x509(pubkey, crt, 0);
 103         if (ret < 0)
 104                 return 1;
 105
 106         ret = gnutls_pubkey_verify_data2(pubkey, GNUTLS_SIGN_DSA_SHA1, 0, &data, &sig);
 107         if (ret < 0 && ret != GNUTLS_E_PK_SIG_VERIFY_FAILED)
 108                 return 1;
 109
 110         //printf ("success!\n");
 111
 112         gnutls_x509_crt_deinit(crt);
 113         gnutls_pubkey_deinit(pubkey);
 114         gnutls_global_deinit();
 115
 116         return 0;
 117 }