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/*
* Copyright (C) 2009-2012 Free Software Foundation, Inc.
*
* 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
/*
* Small code to reproduce the CVE-2009-1416 bad DSA key problem.
*
* Build it using:
*
* gcc -o cve-2009-1416 cve-2009-1416.c -lgnutls
*
* If your gnutls library is OK then running it will print 'success!'.
*
* If your gnutls library is buggy then running it will print 'buggy'.
*
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <utils.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
int main(void)
{
gnutls_x509_privkey_t key;
gnutls_datum_t p, q, g, y, x;
int ret;
if (gnutls_fips140_mode_enabled()) {
/* Cannot generate a 512-bit DSA key */
return 77;
}
global_init();
ret = gnutls_x509_privkey_init(&key);
if (ret < 0)
return 1;
ret = gnutls_x509_privkey_generate(key, GNUTLS_PK_DSA, 512, 0);
if (ret < 0)
return 1;
ret = gnutls_x509_privkey_export_dsa_raw(key, &p, &q, &g, &y, &x);
if (ret < 0)
return 1;
if (q.size == 3 && memcmp(q.data, "\x01\x00\x01", 3) == 0) {
printf("buggy\n");
return 1;
}
gnutls_free(p.data);
gnutls_free(q.data);
gnutls_free(g.data);
gnutls_free(y.data);
gnutls_free(x.data);
gnutls_x509_privkey_deinit(key);
gnutls_global_deinit();
return 0;
}
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