tests: added reproducer for the MD5 acceptance issue

Reported by Karthikeyan Bhargavan.
http://lists.gnutls.org/pipermail/gnutls-devel/2015-April/007572.html
parent 0e3fc788
Pipeline #18766 failed with stage
......@@ -90,7 +90,8 @@ ctests = mini-record-2 simple gc set_pkcs12_cred certder certuniqueid \
mini-dtls-record-asym openpgp-callback key-import-export \
mini-dtls-fork mini-dtls-pthread mini-key-material x509cert-invalid \
strict-der mini-extension mini-supplementaldata mini-dtls0-9 \
mini-record-retvals mini-server-name mini-etm mini-x509-cert-callback
mini-record-retvals mini-server-name mini-etm mini-x509-cert-callback \
sign-md5-rep
mini_dtls_pthread_LDADD = $(LDADD) -lpthread
......
/*
* Copyright (C) 2015 Nikos Mavrogiannopoulos
*
* Author: Nikos Mavrogiannopoulos
*
* 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>
#if defined(_WIN32)
int main()
{
exit(77);
}
#else
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <gnutls/gnutls.h>
#include <gnutls/dtls.h>
#include <signal.h>
#include "utils.h"
static void terminate(void);
/* This program tests whether EtM is negotiated as expected.
*/
static void server_log_func(int level, const char *str)
{
fprintf(stderr, "server|<%d>| %s", level, str);
}
static void client_log_func(int level, const char *str)
{
fprintf(stderr, "client|<%d>| %s", level, str);
}
static unsigned char server_cert_pem[] =
"-----BEGIN CERTIFICATE-----\n"
"MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n"
"VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n"
"GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n"
"Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n"
"dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n"
"DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n"
"tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n"
"MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n"
"Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n"
"GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n"
"bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n"
"AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n"
"rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n";
const gnutls_datum_t server_cert = { server_cert_pem,
sizeof(server_cert_pem)
};
static unsigned char server_key_pem[] =
"-----BEGIN RSA PRIVATE KEY-----\n"
"MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n"
"TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n"
"fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n"
"AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n"
"8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n"
"iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n"
"Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n"
"oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n"
"XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n"
"qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n"
"tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n"
"hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n"
"LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n"
"-----END RSA PRIVATE KEY-----\n";
const gnutls_datum_t server_key = { server_key_pem,
sizeof(server_key_pem)
};
static int handshake_callback(gnutls_session_t session, unsigned int htype,
unsigned post, unsigned int incoming, const gnutls_datum_t *msg)
{
gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-RSA", NULL);
return 0;
}
/* A very basic TLS client, with anonymous authentication.
*/
#define MAX_BUF 1024
static void client(int fd)
{
int ret;
char buffer[MAX_BUF + 1];
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
/* Need to enable anonymous KX specifically. */
global_init();
if (debug) {
gnutls_global_set_log_function(client_log_func);
gnutls_global_set_log_level(7);
}
gnutls_certificate_allocate_credentials(&x509_cred);
/* Initialize TLS session
*/
gnutls_init(&session, GNUTLS_CLIENT);
/* Use default priorities */
gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-RSA:-SIGN-ALL:+SIGN-RSA-MD5", NULL);
/* put the anonymous credentials to the current session
*/
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_int(session, fd);
gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_SERVER_KEY_EXCHANGE,
GNUTLS_HOOK_PRE,
handshake_callback);
/* Perform the TLS handshake
*/
do {
ret = gnutls_handshake(session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret == GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM) {
/* success */
goto end;
}
if (ret < 0) {
fail("client: Handshake failed: %s\n", gnutls_strerror(ret));
exit(1);
} else {
if (debug)
success("client: Handshake was completed\n");
}
if (gnutls_sign_algorithm_get(session) == GNUTLS_SIGN_RSA_MD5) {
fail("client: MD5 was negotiated\n");
exit(1);
}
success("client: %s was negotiated\n", gnutls_sign_get_name(gnutls_sign_algorithm_get(session)));
if (debug)
success("client: TLS version is: %s\n",
gnutls_protocol_get_name
(gnutls_protocol_get_version(session)));
do {
do {
ret = gnutls_record_recv(session, buffer, MAX_BUF);
} while (ret == GNUTLS_E_AGAIN
|| ret == GNUTLS_E_INTERRUPTED);
} while (ret > 0);
if (ret == 0) {
if (debug)
success
("client: Peer has closed the TLS connection\n");
goto end;
} else if (ret < 0) {
if (ret != 0) {
fail("client: Error: %s\n", gnutls_strerror(ret));
exit(1);
}
}
gnutls_bye(session, GNUTLS_SHUT_WR);
end:
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
}
/* These are global */
pid_t child;
static void terminate(void)
{
kill(child, SIGTERM);
exit(1);
}
static void server(int fd)
{
int ret;
char buffer[MAX_BUF + 1];
gnutls_session_t session;
gnutls_certificate_credentials_t x509_cred;
unsigned to_send = sizeof(buffer)/4;
/* this must be called once in the program
*/
global_init();
memset(buffer, 0, sizeof(buffer));
if (debug) {
gnutls_global_set_log_function(server_log_func);
gnutls_global_set_log_level(4711);
}
gnutls_certificate_allocate_credentials(&x509_cred);
gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert,
&server_key,
GNUTLS_X509_FMT_PEM);
gnutls_init(&session, GNUTLS_SERVER);
/* avoid calling all the priority functions, since the defaults
* are adequate.
*/
gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-RSA:-SIGN-ALL:+SIGN-RSA-MD5", NULL);
gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_int(session, fd);
do {
ret = gnutls_handshake(session);
} while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret < 0) {
close(fd);
gnutls_deinit(session);
fail("server: Handshake has failed (%s)\n\n",
gnutls_strerror(ret));
terminate();
}
if (debug) {
success("server: Handshake was completed\n");
success("server: %s was negotiated\n", gnutls_sign_get_name(gnutls_sign_algorithm_get(session)));
}
if (debug)
success("server: TLS version is: %s\n",
gnutls_protocol_get_name
(gnutls_protocol_get_version(session)));
do {
do {
ret =
gnutls_record_send(session, buffer,
sizeof(buffer));
} while (ret == GNUTLS_E_AGAIN
|| ret == GNUTLS_E_INTERRUPTED);
if (ret < 0) {
fail("Error sending %d byte packet: %s\n", to_send,
gnutls_strerror(ret));
terminate();
}
to_send++;
}
while (to_send < 64);
to_send = -1;
/* do not wait for the peer to close the connection.
*/
gnutls_bye(session, GNUTLS_SHUT_WR);
close(fd);
gnutls_deinit(session);
gnutls_certificate_free_credentials(x509_cred);
gnutls_global_deinit();
if (debug)
success("server: finished\n");
}
static void ch_handler(int sig)
{
int status;
wait(&status);
if (WEXITSTATUS(status) != 0 ||
(WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) {
if (WIFSIGNALED(status))
fail("Child died with sigsegv\n");
else
fail("Child died with status %d\n",
WEXITSTATUS(status));
terminate();
}
return;
}
void doit(void)
{
int fd[2];
int ret;
signal(SIGCHLD, ch_handler);
ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd);
if (ret < 0) {
perror("socketpair");
exit(1);
}
child = fork();
if (child < 0) {
perror("fork");
fail("fork");
exit(1);
}
if (child) {
/* parent */
close(fd[1]);
client(fd[0]);
kill(child, SIGTERM);
} else {
close(fd[0]);
server(fd[1]);
exit(0);
}
}
#endif /* _WIN32 */
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