1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
|
diff -up cyrus-sasl-2.1.26/plugins/ntlm.c.openssl110 cyrus-sasl-2.1.26/plugins/ntlm.c
--- cyrus-sasl-2.1.26/plugins/ntlm.c.openssl110 2012-01-28 00:31:36.000000000 +0100
+++ cyrus-sasl-2.1.26/plugins/ntlm.c 2016-11-07 16:15:57.498259304 +0100
@@ -417,6 +417,29 @@ static unsigned char *P24(unsigned char
return P24;
}
+static HMAC_CTX *_plug_HMAC_CTX_new(const sasl_utils_t *utils)
+{
+ utils->log(NULL, SASL_LOG_DEBUG, "_plug_HMAC_CTX_new()");
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ return HMAC_CTX_new();
+#else
+ return utils->malloc(sizeof(HMAC_CTX));
+#endif
+}
+
+static void _plug_HMAC_CTX_free(HMAC_CTX *ctx, const sasl_utils_t *utils)
+{
+ utils->log(NULL, SASL_LOG_DEBUG, "_plug_HMAC_CTX_free()");
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ HMAC_CTX_free(ctx);
+#else
+ HMAC_cleanup(ctx);
+ utils->free(ctx);
+#endif
+}
+
static unsigned char *V2(unsigned char *V2, sasl_secret_t *passwd,
const char *authid, const char *target,
const unsigned char *challenge,
@@ -424,7 +447,7 @@ static unsigned char *V2(unsigned char *
const sasl_utils_t *utils,
char **buf, unsigned *buflen, int *result)
{
- HMAC_CTX ctx;
+ HMAC_CTX *ctx = NULL;
unsigned char hash[EVP_MAX_MD_SIZE];
char *upper;
unsigned int len;
@@ -435,6 +458,10 @@ static unsigned char *V2(unsigned char *
SETERROR(utils, "cannot allocate NTLMv2 hash");
*result = SASL_NOMEM;
}
+ else if ((ctx = _plug_HMAC_CTX_new(utils)) == NULL) {
+ SETERROR(utils, "cannot allocate HMAC CTX");
+ *result = SASL_NOMEM;
+ }
else {
/* NTLMv2hash = HMAC-MD5(NTLMhash, unicode(ucase(authid + domain))) */
P16_nt(hash, passwd, utils, buf, buflen, result);
@@ -449,17 +476,18 @@ static unsigned char *V2(unsigned char *
HMAC(EVP_md5(), hash, MD4_DIGEST_LENGTH, *buf, 2 * len, hash, &len);
/* V2 = HMAC-MD5(NTLMv2hash, challenge + blob) + blob */
- HMAC_Init(&ctx, hash, len, EVP_md5());
- HMAC_Update(&ctx, challenge, NTLM_NONCE_LENGTH);
- HMAC_Update(&ctx, blob, bloblen);
- HMAC_Final(&ctx, V2, &len);
- HMAC_cleanup(&ctx);
+ HMAC_Init_ex(ctx, hash, len, EVP_md5(), NULL);
+ HMAC_Update(ctx, challenge, NTLM_NONCE_LENGTH);
+ HMAC_Update(ctx, blob, bloblen);
+ HMAC_Final(ctx, V2, &len);
/* the blob is concatenated outside of this function */
*result = SASL_OK;
}
+ if (ctx) _plug_HMAC_CTX_free(ctx, utils);
+
return V2;
}
diff -up cyrus-sasl-2.1.26/plugins/otp.c.openssl110 cyrus-sasl-2.1.26/plugins/otp.c
--- cyrus-sasl-2.1.26/plugins/otp.c.openssl110 2012-10-12 16:05:48.000000000 +0200
+++ cyrus-sasl-2.1.26/plugins/otp.c 2016-11-07 16:13:54.374327601 +0100
@@ -96,6 +96,28 @@ static algorithm_option_t algorithm_opti
{NULL, 0, NULL}
};
+static EVP_MD_CTX *_plug_EVP_MD_CTX_new(const sasl_utils_t *utils)
+{
+ utils->log(NULL, SASL_LOG_DEBUG, "_plug_EVP_MD_CTX_new()");
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ return EVP_MD_CTX_new();
+#else
+ return utils->malloc(sizeof(EVP_MD_CTX));
+#endif
+}
+
+static void _plug_EVP_MD_CTX_free(EVP_MD_CTX *ctx, const sasl_utils_t *utils)
+{
+ utils->log(NULL, SASL_LOG_DEBUG, "_plug_EVP_MD_CTX_free()");
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+ EVP_MD_CTX_free(ctx);
+#else
+ utils->free(ctx);
+#endif
+}
+
/* Convert the binary data into ASCII hex */
void bin2hex(unsigned char *bin, int binlen, char *hex)
{
@@ -116,17 +138,16 @@ void bin2hex(unsigned char *bin, int bin
* swabbing bytes if necessary.
*/
static void otp_hash(const EVP_MD *md, char *in, size_t inlen,
- unsigned char *out, int swab)
+ unsigned char *out, int swab, EVP_MD_CTX *mdctx)
{
- EVP_MD_CTX mdctx;
- char hash[EVP_MAX_MD_SIZE];
+ unsigned char hash[EVP_MAX_MD_SIZE];
unsigned int i;
int j;
unsigned hashlen;
- EVP_DigestInit(&mdctx, md);
- EVP_DigestUpdate(&mdctx, in, inlen);
- EVP_DigestFinal(&mdctx, hash, &hashlen);
+ EVP_DigestInit(mdctx, md);
+ EVP_DigestUpdate(mdctx, in, inlen);
+ EVP_DigestFinal(mdctx, hash, &hashlen);
/* Fold the result into 64 bits */
for (i = OTP_HASH_SIZE; i < hashlen; i++) {
@@ -149,7 +170,9 @@ static int generate_otp(const sasl_utils
char *secret, char *otp)
{
const EVP_MD *md;
- char *key;
+ EVP_MD_CTX *mdctx = NULL;
+ char *key = NULL;
+ int r = SASL_OK;
if (!(md = EVP_get_digestbyname(alg->evp_name))) {
utils->seterror(utils->conn, 0,
@@ -157,23 +180,32 @@ static int generate_otp(const sasl_utils
return SASL_FAIL;
}
+ if ((mdctx = _plug_EVP_MD_CTX_new(utils)) == NULL) {
+ SETERROR(utils, "cannot allocate MD CTX");
+ r = SASL_NOMEM;
+ goto done;
+ }
+
if ((key = utils->malloc(strlen(seed) + strlen(secret) + 1)) == NULL) {
SETERROR(utils, "cannot allocate OTP key");
- return SASL_NOMEM;
+ r = SASL_NOMEM;
+ goto done;
}
/* initial step */
strcpy(key, seed);
strcat(key, secret);
- otp_hash(md, key, strlen(key), otp, alg->swab);
+ otp_hash(md, key, strlen(key), otp, alg->swab, mdctx);
/* computation step */
while (seq-- > 0)
- otp_hash(md, otp, OTP_HASH_SIZE, otp, alg->swab);
-
- utils->free(key);
+ otp_hash(md, otp, OTP_HASH_SIZE, otp, alg->swab, mdctx);
+
+ done:
+ if (key) utils->free(key);
+ if (mdctx) _plug_EVP_MD_CTX_free(mdctx, utils);
- return SASL_OK;
+ return r;
}
static int parse_challenge(const sasl_utils_t *utils,
@@ -693,7 +725,8 @@ static int strptrcasecmp(const void *arg
/* Convert the 6 words into binary data */
static int word2bin(const sasl_utils_t *utils,
- char *words, unsigned char *bin, const EVP_MD *md)
+ char *words, unsigned char *bin, const EVP_MD *md,
+ EVP_MD_CTX *mdctx)
{
int i, j;
char *c, *word, buf[OTP_RESPONSE_MAX+1];
@@ -752,13 +785,12 @@ static int word2bin(const sasl_utils_t *
/* alternate dictionary */
if (alt_dict) {
- EVP_MD_CTX mdctx;
- char hash[EVP_MAX_MD_SIZE];
- int hashlen;
+ unsigned char hash[EVP_MAX_MD_SIZE];
+ unsigned hashlen;
- EVP_DigestInit(&mdctx, md);
- EVP_DigestUpdate(&mdctx, word, strlen(word));
- EVP_DigestFinal(&mdctx, hash, &hashlen);
+ EVP_DigestInit(mdctx, md);
+ EVP_DigestUpdate(mdctx, word, strlen(word));
+ EVP_DigestFinal(mdctx, hash, &hashlen);
/* use lowest 11 bits */
x = ((hash[hashlen-2] & 0x7) << 8) | hash[hashlen-1];
@@ -802,6 +834,7 @@ static int verify_response(server_contex
char *response)
{
const EVP_MD *md;
+ EVP_MD_CTX *mdctx = NULL;
char *c;
int do_init = 0;
unsigned char cur_otp[OTP_HASH_SIZE], prev_otp[OTP_HASH_SIZE];
@@ -815,6 +848,11 @@ static int verify_response(server_contex
return SASL_FAIL;
}
+ if ((mdctx = _plug_EVP_MD_CTX_new(utils)) == NULL) {
+ SETERROR(utils, "cannot allocate MD CTX");
+ return SASL_NOMEM;
+ }
+
/* eat leading whitespace */
c = response;
while (isspace((int) *c)) c++;
@@ -824,7 +862,7 @@ static int verify_response(server_contex
r = hex2bin(c+strlen(OTP_HEX_TYPE), cur_otp, OTP_HASH_SIZE);
}
else if (!strncasecmp(c, OTP_WORD_TYPE, strlen(OTP_WORD_TYPE))) {
- r = word2bin(utils, c+strlen(OTP_WORD_TYPE), cur_otp, md);
+ r = word2bin(utils, c+strlen(OTP_WORD_TYPE), cur_otp, md, mdctx);
}
else if (!strncasecmp(c, OTP_INIT_HEX_TYPE,
strlen(OTP_INIT_HEX_TYPE))) {
@@ -834,7 +872,7 @@ static int verify_response(server_contex
else if (!strncasecmp(c, OTP_INIT_WORD_TYPE,
strlen(OTP_INIT_WORD_TYPE))) {
do_init = 1;
- r = word2bin(utils, c+strlen(OTP_INIT_WORD_TYPE), cur_otp, md);
+ r = word2bin(utils, c+strlen(OTP_INIT_WORD_TYPE), cur_otp, md, mdctx);
}
else {
SETERROR(utils, "unknown OTP extended response type");
@@ -843,14 +881,15 @@ static int verify_response(server_contex
}
else {
/* standard response, try word first, and then hex */
- r = word2bin(utils, c, cur_otp, md);
+ r = word2bin(utils, c, cur_otp, md, mdctx);
if (r != SASL_OK)
r = hex2bin(c, cur_otp, OTP_HASH_SIZE);
}
if (r == SASL_OK) {
/* do one more hash (previous otp) and compare to stored otp */
- otp_hash(md, cur_otp, OTP_HASH_SIZE, prev_otp, text->alg->swab);
+ otp_hash(md, (char *) cur_otp, OTP_HASH_SIZE,
+ prev_otp, text->alg->swab, mdctx);
if (!memcmp(prev_otp, text->otp, OTP_HASH_SIZE)) {
/* update the secret with this seq/otp */
@@ -879,23 +918,28 @@ static int verify_response(server_contex
*new_resp++ = '\0';
}
- if (!(new_chal && new_resp))
- return SASL_BADAUTH;
+ if (!(new_chal && new_resp)) {
+ r = SASL_BADAUTH;
+ goto done;
+ }
if ((r = parse_challenge(utils, new_chal, &alg, &seq, seed, 1))
!= SASL_OK) {
- return r;
+ goto done;
}
- if (seq < 1 || !strcasecmp(seed, text->seed))
- return SASL_BADAUTH;
+ if (seq < 1 || !strcasecmp(seed, text->seed)) {
+ r = SASL_BADAUTH;
+ goto done;
+ }
/* find the MDA */
if (!(md = EVP_get_digestbyname(alg->evp_name))) {
utils->seterror(utils->conn, 0,
"OTP algorithm %s is not available",
alg->evp_name);
- return SASL_BADAUTH;
+ r = SASL_BADAUTH;
+ goto done;
}
if (!strncasecmp(c, OTP_INIT_HEX_TYPE, strlen(OTP_INIT_HEX_TYPE))) {
@@ -903,7 +947,7 @@ static int verify_response(server_contex
}
else if (!strncasecmp(c, OTP_INIT_WORD_TYPE,
strlen(OTP_INIT_WORD_TYPE))) {
- r = word2bin(utils, new_resp, new_otp, md);
+ r = word2bin(utils, new_resp, new_otp, md, mdctx);
}
if (r == SASL_OK) {
@@ -914,7 +958,10 @@ static int verify_response(server_contex
memcpy(text->otp, new_otp, OTP_HASH_SIZE);
}
}
-
+
+ done:
+ if (mdctx) _plug_EVP_MD_CTX_free(mdctx, utils);
+
return r;
}
diff -up cyrus-sasl-2.1.26/saslauthd/lak.c.openssl110 cyrus-sasl-2.1.26/saslauthd/lak.c
--- cyrus-sasl-2.1.26/saslauthd/lak.c.openssl110 2016-11-07 16:13:54.347327616 +0100
+++ cyrus-sasl-2.1.26/saslauthd/lak.c 2016-11-07 16:18:42.283167898 +0100
@@ -61,6 +61,35 @@
#include <sasl.h>
#include "lak.h"
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+static EVP_MD_CTX *EVP_MD_CTX_new(void)
+{
+ return EVP_MD_CTX_create();
+}
+static void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
+{
+ if (ctx == NULL)
+ return;
+
+ EVP_MD_CTX_destroy(ctx);
+}
+
+static EVP_ENCODE_CTX *EVP_ENCODE_CTX_new(void)
+{
+ EVP_ENCODE_CTX *ctx = OPENSSL_malloc(sizeof(*ctx));
+
+ if (ctx != NULL) {
+ memset(ctx, 0, sizeof(*ctx));
+ }
+ return ctx;
+}
+static void EVP_ENCODE_CTX_free(EVP_ENCODE_CTX *ctx)
+{
+ OPENSSL_free(ctx);
+ return;
+}
+#endif
+
typedef struct lak_auth_method {
int method;
int (*check) (LAK *lak, const char *user, const char *service, const char *realm, const char *password) ;
@@ -1720,20 +1749,28 @@ static int lak_base64_decode(
int rc, i, tlen = 0;
char *text;
- EVP_ENCODE_CTX EVP_ctx;
+ EVP_ENCODE_CTX *enc_ctx = EVP_ENCODE_CTX_new();
- text = (char *)malloc(((strlen(src)+3)/4 * 3) + 1);
if (text == NULL)
return LAK_NOMEM;
- EVP_DecodeInit(&EVP_ctx);
- rc = EVP_DecodeUpdate(&EVP_ctx, text, &i, (char *)src, strlen(src));
+ text = (char *)malloc(((strlen(src)+3)/4 * 3) + 1);
+ if (text == NULL) {
+ EVP_ENCODE_CTX_free(enc_ctx);
+ return LAK_NOMEM;
+ }
+
+ EVP_DecodeInit(enc_ctx);
+ rc = EVP_DecodeUpdate(enc_ctx, (unsigned char *) text, &i, (const unsigned char *)src, strlen(src));
if (rc < 0) {
+ EVP_ENCODE_CTX_free(enc_ctx);
free(text);
return LAK_FAIL;
}
tlen += i;
- EVP_DecodeFinal(&EVP_ctx, text, &i);
+ EVP_DecodeFinal(enc_ctx, (unsigned char *) text, &i);
+
+ EVP_ENCODE_CTX_free(enc_ctx);
*ret = text;
if (rlen != NULL)
@@ -1749,7 +1786,7 @@ static int lak_check_hashed(
{
int rc, clen;
LAK_HASH_ROCK *hrock = (LAK_HASH_ROCK *) rock;
- EVP_MD_CTX mdctx;
+ EVP_MD_CTX *mdctx;
const EVP_MD *md;
unsigned char digest[EVP_MAX_MD_SIZE];
char *cred;
@@ -1758,17 +1795,24 @@ static int lak_check_hashed(
if (!md)
return LAK_FAIL;
+ mdctx = EVP_MD_CTX_new();
+ if (!mdctx)
+ return LAK_NOMEM;
+
rc = lak_base64_decode(hash, &cred, &clen);
- if (rc != LAK_OK)
+ if (rc != LAK_OK) {
+ EVP_MD_CTX_free(mdctx);
return rc;
+ }
- EVP_DigestInit(&mdctx, md);
- EVP_DigestUpdate(&mdctx, passwd, strlen(passwd));
+ EVP_DigestInit(mdctx, md);
+ EVP_DigestUpdate(mdctx, passwd, strlen(passwd));
if (hrock->salted) {
- EVP_DigestUpdate(&mdctx, &cred[EVP_MD_size(md)],
+ EVP_DigestUpdate(mdctx, &cred[EVP_MD_size(md)],
clen - EVP_MD_size(md));
}
- EVP_DigestFinal(&mdctx, digest, NULL);
+ EVP_DigestFinal(mdctx, digest, NULL);
+ EVP_MD_CTX_free(mdctx);
rc = memcmp((char *)cred, (char *)digest, EVP_MD_size(md));
free(cred);
|