--- /dev/null
+//
+// ssl-44-crashes.c
+// libsecurity_ssl
+//
+// Created by Fabrice Gautier on 10/1/12.
+//
+//
+
+
+#include <stdbool.h>
+#include <pthread.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include <CoreFoundation/CoreFoundation.h>
+
+#include <AssertMacros.h>
+#include <Security/SecureTransportPriv.h> /* SSLSetOption */
+#include <Security/SecureTransport.h>
+#include <Security/SecPolicy.h>
+#include <Security/SecTrust.h>
+#include <Security/SecIdentity.h>
+#include <Security/SecIdentityPriv.h>
+#include <Security/SecCertificatePriv.h>
+#include <Security/SecKeyPriv.h>
+#include <Security/SecItem.h>
+#include <Security/SecRandom.h>
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <mach/mach_time.h>
+
+#if TARGET_OS_IPHONE
+#include <Security/SecRSAKey.h>
+#endif
+
+#include "ssl_regressions.h"
+#include "ssl-utils.h"
+
+
+typedef struct {
+ SSLContextRef st;
+ bool is_server;
+ int comm;
+ CFArrayRef certs;
+ int test;
+} ssl_test_handle;
+
+
+#pragma mark -
+#pragma mark SecureTransport support
+
+#if 0
+static void hexdump(const uint8_t *bytes, size_t len) {
+ size_t ix;
+ printf("socket write(%p, %lu)\n", bytes, len);
+ for (ix = 0; ix < len; ++ix) {
+ if (!(ix % 16))
+ printf("\n");
+ printf("%02X ", bytes[ix]);
+ }
+ printf("\n");
+}
+#else
+#define hexdump(bytes, len)
+#endif
+
+static OSStatus SocketWrite(SSLConnectionRef h, const void *data, size_t *length)
+{
+ int conn = ((const ssl_test_handle *)h)->comm;
+ size_t len = *length;
+ uint8_t *ptr = (uint8_t *)data;
+
+ do {
+ ssize_t ret;
+ do {
+ hexdump(ptr, len);
+ ret = write((int)conn, ptr, len);
+ } while ((ret < 0) && (errno == EAGAIN || errno == EINTR));
+ if (ret > 0) {
+ len -= ret;
+ ptr += ret;
+ }
+ else
+ return -36;
+ } while (len > 0);
+
+ *length = *length - len;
+ return errSecSuccess;
+}
+
+static int changepad=0;
+
+static OSStatus SocketRead(SSLConnectionRef h, void *data, size_t *length)
+{
+ const ssl_test_handle *handle=h;
+ int conn = handle->comm;
+ size_t len = *length;
+ uint8_t *ptr = (uint8_t *)data;
+
+
+ do {
+ ssize_t ret;
+ do {
+ ret = read((int)conn, ptr, len);
+ } while ((ret < 0) && (errno == EAGAIN || errno == EINTR));
+ if (ret > 0) {
+ len -= ret;
+ ptr += ret;
+ }
+ else
+ return -36;
+ } while (len > 0);
+
+ if(len!=0)
+ printf("Something went wrong here... len=%d\n", (int)len);
+
+ *length = *length - len;
+
+ ptr=data;
+
+ /* change pad in the data */
+ if(changepad==1) {
+ changepad=0;
+ ptr[31]=ptr[31]^0x08^0xff; // expected padding was 8, changing it to 0xff to trigger integer underflow.
+ }
+
+ /* We are reading a data application header */
+ if(*length==5 && ptr[0]==0x17) {
+ switch(handle->test) {
+ case 0:
+ ptr[4]=32; // reduce the size to 2 blocks and trigger integer underflow.
+ break;
+ case 1:
+ ptr[4]=48; // reduce the size to 3 blocks and triggering integer underflow in the padding.
+ break;
+ case 2:
+ changepad=1;
+ break;
+ default:
+ break;
+ }
+ }
+
+
+ return errSecSuccess;
+}
+
+
+
+static void *securetransport_ssl_thread(void *arg)
+{
+ OSStatus ortn;
+ ssl_test_handle * ssl = (ssl_test_handle *)arg;
+ SSLContextRef ctx = ssl->st;
+ bool got_server_auth = false;
+
+ //uint64_t start = mach_absolute_time();
+ do {
+ ortn = SSLHandshake(ctx);
+
+ if (ortn == errSSLServerAuthCompleted)
+ {
+ require_string(!got_server_auth, out, "second server auth");
+ got_server_auth = true;
+ }
+ } while (ortn == errSSLWouldBlock
+ || ortn == errSSLServerAuthCompleted);
+
+ require_noerr_action_quiet(ortn, out,
+ fprintf(stderr, "Fell out of SSLHandshake with error: %d\n", (int)ortn));
+
+ unsigned char ibuf[8], obuf[8];
+ size_t len;
+ if (ssl->is_server) {
+ SecRandomCopyBytes(kSecRandomDefault, sizeof(obuf), obuf);
+ require_noerr_quiet(ortn = SSLWrite(ctx, obuf, sizeof(obuf), &len), out);
+ require_action_quiet(len == sizeof(obuf), out, ortn = -1);
+ } else {
+ require_noerr_quiet(ortn = SSLRead(ctx, ibuf, sizeof(ibuf), &len), out);
+ require_action_quiet(len == sizeof(ibuf), out, ortn = -1);
+ }
+
+out:
+ SSLClose(ctx);
+ CFRelease(ctx);
+ close(ssl->comm);
+ pthread_exit((void *)(intptr_t)ortn);
+ return NULL;
+}
+
+
+static ssl_test_handle *
+ssl_test_handle_create(bool server, int comm, CFArrayRef certs)
+{
+ ssl_test_handle *handle = calloc(1, sizeof(ssl_test_handle));
+ SSLContextRef ctx = SSLCreateContext(kCFAllocatorDefault, server?kSSLServerSide:kSSLClientSide, kSSLStreamType);
+
+ require(handle, out);
+ require(ctx, out);
+
+ require_noerr(SSLSetIOFuncs(ctx,
+ (SSLReadFunc)SocketRead, (SSLWriteFunc)SocketWrite), out);
+ require_noerr(SSLSetConnection(ctx, (SSLConnectionRef)handle), out);
+
+ if (server)
+ require_noerr(SSLSetCertificate(ctx, certs), out);
+
+ require_noerr(SSLSetSessionOption(ctx,
+ kSSLSessionOptionBreakOnServerAuth, true), out);
+
+ /* Tell SecureTransport to not check certs itself: it will break out of the
+ handshake to let us take care of it instead. */
+ require_noerr(SSLSetEnableCertVerify(ctx, false), out);
+
+ handle->is_server = server;
+ handle->comm = comm;
+ handle->certs = certs;
+ handle->st = ctx;
+
+ return handle;
+
+out:
+ if (handle) free(handle);
+ if (ctx) CFRelease(ctx);
+ return NULL;
+}
+
+static void
+tests(void)
+{
+ pthread_t client_thread, server_thread;
+ CFArrayRef server_certs = server_chain();
+ ok(server_certs, "got server certs");
+
+ int i;
+
+ for(i=0; i<3; i++)
+ {
+ int sp[2];
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, sp)) exit(errno);
+ fcntl(sp[0], F_SETNOSIGPIPE, 1);
+ fcntl(sp[1], F_SETNOSIGPIPE, 1);
+
+ ssl_test_handle *server, *client;
+
+ server = ssl_test_handle_create(true /*server*/, sp[0], server_certs);
+ client = ssl_test_handle_create(false/*client*/, sp[1], NULL);
+
+ server->test=i;
+ client->test=i;
+
+ require(client, out);
+ require(server, out);
+
+ SSLCipherSuite cipher = TLS_RSA_WITH_AES_128_CBC_SHA256;
+ require_noerr(SSLSetEnabledCiphers(client->st, &cipher, 1), out);
+
+ pthread_create(&client_thread, NULL, securetransport_ssl_thread, client);
+ pthread_create(&server_thread, NULL, securetransport_ssl_thread, server);
+
+ int server_err, client_err;
+ pthread_join(client_thread, (void*)&client_err);
+ pthread_join(server_thread, (void*)&server_err);
+
+
+ ok(!server_err, "Server error = %d", server_err);
+ /* test i=0 should cause errSSLClosedAbort, 1 & 2 should cause errSSLBadRecordMac */
+ ok(client_err==(i?errSSLBadRecordMac:errSSLClosedAbort), "Client error = %d", client_err);
+
+out:
+ free(client);
+ free(server);
+
+ }
+ CFReleaseNull(server_certs);
+}
+
+int ssl_44_crashes(int argc, char *const *argv)
+{
+
+ plan_tests(3*2 + 1 /*cert*/);
+
+
+ tests();
+
+ return 0;
+}
projects / apple / security.git / blobdiff