File: | var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp |
Warning: | line 864, column 3 Value stored to 'cursor' is never read |
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1 | /* vim:set ts=2 sw=2 et cindent: */ |
2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
5 | |
6 | #include "nsNTLMAuthModule.h" |
7 | |
8 | #include <time.h> |
9 | |
10 | #include "ScopedNSSTypes.h" |
11 | #include "md4.h" |
12 | #include "mozilla/Assertions.h" |
13 | #include "mozilla/Base64.h" |
14 | #include "mozilla/Casting.h" |
15 | #include "mozilla/CheckedInt.h" |
16 | #include "mozilla/EndianUtils.h" |
17 | #include "mozilla/Likely.h" |
18 | #include "mozilla/Logging.h" |
19 | #include "mozilla/Preferences.h" |
20 | #include "mozilla/Sprintf.h" |
21 | #include "mozilla/StaticPrefs_network.h" |
22 | #include "mozilla/Telemetry.h" |
23 | #include "nsCOMPtr.h" |
24 | #include "nsComponentManagerUtils.h" |
25 | #include "nsICryptoHash.h" |
26 | #include "nsNativeCharsetUtils.h" |
27 | #include "nsNetCID.h" |
28 | #include "nsUnicharUtils.h" |
29 | #include "pk11pub.h" |
30 | #include "prsystem.h" |
31 | |
32 | static mozilla::LazyLogModule sNTLMLog("NTLM"); |
33 | |
34 | #define LOG(x)do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, MOZ_LOG_EXPAND_ARGS x); } } while (0) MOZ_LOG(sNTLMLog, mozilla::LogLevel::Debug, x)do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, MOZ_LOG_EXPAND_ARGS x); } } while (0) |
35 | #define LOG_ENABLED()(__builtin_expect(!!(mozilla::detail::log_test(sNTLMLog, mozilla ::LogLevel::Debug)), 0)) MOZ_LOG_TEST(sNTLMLog, mozilla::LogLevel::Debug)(__builtin_expect(!!(mozilla::detail::log_test(sNTLMLog, mozilla ::LogLevel::Debug)), 0)) |
36 | |
37 | static void des_makekey(const uint8_t* raw, uint8_t* key); |
38 | static void des_encrypt(const uint8_t* key, const uint8_t* src, uint8_t* hash); |
39 | |
40 | //----------------------------------------------------------------------------- |
41 | // this file contains a cross-platform NTLM authentication implementation. it |
42 | // is based on documentation from: http://davenport.sourceforge.net/ntlm.html |
43 | //----------------------------------------------------------------------------- |
44 | |
45 | #define NTLM_NegotiateUnicode0x00000001 0x00000001 |
46 | #define NTLM_NegotiateOEM0x00000002 0x00000002 |
47 | #define NTLM_RequestTarget0x00000004 0x00000004 |
48 | #define NTLM_Unknown10x00000008 0x00000008 |
49 | #define NTLM_NegotiateSign0x00000010 0x00000010 |
50 | #define NTLM_NegotiateSeal0x00000020 0x00000020 |
51 | #define NTLM_NegotiateDatagramStyle0x00000040 0x00000040 |
52 | #define NTLM_NegotiateLanManagerKey0x00000080 0x00000080 |
53 | #define NTLM_NegotiateNetware0x00000100 0x00000100 |
54 | #define NTLM_NegotiateNTLMKey0x00000200 0x00000200 |
55 | #define NTLM_Unknown20x00000400 0x00000400 |
56 | #define NTLM_Unknown30x00000800 0x00000800 |
57 | #define NTLM_NegotiateDomainSupplied0x00001000 0x00001000 |
58 | #define NTLM_NegotiateWorkstationSupplied0x00002000 0x00002000 |
59 | #define NTLM_NegotiateLocalCall0x00004000 0x00004000 |
60 | #define NTLM_NegotiateAlwaysSign0x00008000 0x00008000 |
61 | #define NTLM_TargetTypeDomain0x00010000 0x00010000 |
62 | #define NTLM_TargetTypeServer0x00020000 0x00020000 |
63 | #define NTLM_TargetTypeShare0x00040000 0x00040000 |
64 | #define NTLM_NegotiateNTLM2Key0x00080000 0x00080000 |
65 | #define NTLM_RequestInitResponse0x00100000 0x00100000 |
66 | #define NTLM_RequestAcceptResponse0x00200000 0x00200000 |
67 | #define NTLM_RequestNonNTSessionKey0x00400000 0x00400000 |
68 | #define NTLM_NegotiateTargetInfo0x00800000 0x00800000 |
69 | #define NTLM_Unknown40x01000000 0x01000000 |
70 | #define NTLM_Unknown50x02000000 0x02000000 |
71 | #define NTLM_Unknown60x04000000 0x04000000 |
72 | #define NTLM_Unknown70x08000000 0x08000000 |
73 | #define NTLM_Unknown80x10000000 0x10000000 |
74 | #define NTLM_Negotiate1280x20000000 0x20000000 |
75 | #define NTLM_NegotiateKeyExchange0x40000000 0x40000000 |
76 | #define NTLM_Negotiate560x80000000 0x80000000 |
77 | |
78 | // we send these flags with our type 1 message |
79 | #define NTLM_TYPE1_FLAGS(0x00000001 | 0x00000002 | 0x00000004 | 0x00000200 | 0x00008000 | 0x00080000) \ |
80 | (NTLM_NegotiateUnicode0x00000001 | NTLM_NegotiateOEM0x00000002 | NTLM_RequestTarget0x00000004 | \ |
81 | NTLM_NegotiateNTLMKey0x00000200 | NTLM_NegotiateAlwaysSign0x00008000 | NTLM_NegotiateNTLM2Key0x00080000) |
82 | |
83 | static const char NTLM_SIGNATURE[] = "NTLMSSP"; |
84 | static const char NTLM_TYPE1_MARKER[] = {0x01, 0x00, 0x00, 0x00}; |
85 | static const char NTLM_TYPE2_MARKER[] = {0x02, 0x00, 0x00, 0x00}; |
86 | static const char NTLM_TYPE3_MARKER[] = {0x03, 0x00, 0x00, 0x00}; |
87 | |
88 | #define NTLM_TYPE1_HEADER_LEN32 32 |
89 | #define NTLM_TYPE2_HEADER_LEN48 48 |
90 | #define NTLM_TYPE3_HEADER_LEN64 64 |
91 | |
92 | /** |
93 | * We don't actually send a LM response, but we still have to send something in |
94 | * this spot |
95 | */ |
96 | #define LM_RESP_LEN24 24 |
97 | |
98 | #define NTLM_CHAL_LEN8 8 |
99 | |
100 | #define NTLM_HASH_LEN16 16 |
101 | #define NTLMv2_HASH_LEN16 16 |
102 | #define NTLM_RESP_LEN24 24 |
103 | #define NTLMv2_RESP_LEN16 16 |
104 | #define NTLMv2_BLOB1_LEN28 28 |
105 | |
106 | //----------------------------------------------------------------------------- |
107 | |
108 | /** |
109 | * Prints a description of flags to the NSPR Log, if enabled. |
110 | */ |
111 | static void LogFlags(uint32_t flags) { |
112 | if (!LOG_ENABLED()(__builtin_expect(!!(mozilla::detail::log_test(sNTLMLog, mozilla ::LogLevel::Debug)), 0))) return; |
113 | #define TEST(_flag) \ |
114 | if (flags & NTLM_##_flag) \ |
115 | PR_LogPrint(" 0x%08x (" #_flag ")\n", NTLM_##_flag) |
116 | |
117 | TEST(NegotiateUnicode); |
118 | TEST(NegotiateOEM); |
119 | TEST(RequestTarget); |
120 | TEST(Unknown1); |
121 | TEST(NegotiateSign); |
122 | TEST(NegotiateSeal); |
123 | TEST(NegotiateDatagramStyle); |
124 | TEST(NegotiateLanManagerKey); |
125 | TEST(NegotiateNetware); |
126 | TEST(NegotiateNTLMKey); |
127 | TEST(Unknown2); |
128 | TEST(Unknown3); |
129 | TEST(NegotiateDomainSupplied); |
130 | TEST(NegotiateWorkstationSupplied); |
131 | TEST(NegotiateLocalCall); |
132 | TEST(NegotiateAlwaysSign); |
133 | TEST(TargetTypeDomain); |
134 | TEST(TargetTypeServer); |
135 | TEST(TargetTypeShare); |
136 | TEST(NegotiateNTLM2Key); |
137 | TEST(RequestInitResponse); |
138 | TEST(RequestAcceptResponse); |
139 | TEST(RequestNonNTSessionKey); |
140 | TEST(NegotiateTargetInfo); |
141 | TEST(Unknown4); |
142 | TEST(Unknown5); |
143 | TEST(Unknown6); |
144 | TEST(Unknown7); |
145 | TEST(Unknown8); |
146 | TEST(Negotiate128); |
147 | TEST(NegotiateKeyExchange); |
148 | TEST(Negotiate56); |
149 | |
150 | #undef TEST |
151 | } |
152 | |
153 | /** |
154 | * Prints a hexdump of buf to the NSPR Log, if enabled. |
155 | * @param tag Description of the data, will be printed in front of the data |
156 | * @param buf the data to print |
157 | * @param bufLen length of the data |
158 | */ |
159 | static void LogBuf(const char* tag, const uint8_t* buf, uint32_t bufLen) { |
160 | int i; |
161 | |
162 | if (!LOG_ENABLED()(__builtin_expect(!!(mozilla::detail::log_test(sNTLMLog, mozilla ::LogLevel::Debug)), 0))) return; |
163 | |
164 | PR_LogPrint("%s =\n", tag); |
165 | char line[80]; |
166 | while (bufLen > 0) { |
167 | int count = bufLen; |
168 | if (count > 8) count = 8; |
169 | |
170 | strcpy(line, " "); |
171 | for (i = 0; i < count; ++i) { |
172 | int len = strlen(line); |
173 | snprintf(line + len, sizeof(line) - len, "0x%02x ", int(buf[i])); |
174 | } |
175 | for (; i < 8; ++i) { |
176 | int len = strlen(line); |
177 | snprintf(line + len, sizeof(line) - len, " "); |
178 | } |
179 | |
180 | int len = strlen(line); |
181 | snprintf(line + len, sizeof(line) - len, " "); |
182 | for (i = 0; i < count; ++i) { |
183 | len = strlen(line); |
184 | if (isprint(buf[i])) { |
185 | snprintf(line + len, sizeof(line) - len, "%c", buf[i]); |
186 | } else { |
187 | snprintf(line + len, sizeof(line) - len, "."); |
188 | } |
189 | } |
190 | PR_LogPrint("%s\n", line); |
191 | |
192 | bufLen -= count; |
193 | buf += count; |
194 | } |
195 | } |
196 | |
197 | /** |
198 | * Print base64-encoded token to the NSPR Log. |
199 | * @param name Description of the token, will be printed in front |
200 | * @param token The token to print |
201 | * @param tokenLen length of the data in token |
202 | */ |
203 | static void LogToken(const char* name, const void* token, uint32_t tokenLen) { |
204 | if (!LOG_ENABLED()(__builtin_expect(!!(mozilla::detail::log_test(sNTLMLog, mozilla ::LogLevel::Debug)), 0))) { |
205 | return; |
206 | } |
207 | |
208 | nsDependentCSubstring tokenString(static_cast<const char*>(token), tokenLen); |
209 | nsAutoCString base64Token; |
210 | nsresult rv = mozilla::Base64Encode(tokenString, base64Token); |
211 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
212 | return; |
213 | } |
214 | |
215 | PR_LogPrint("%s: %s\n", name, base64Token.get()); |
216 | } |
217 | |
218 | //----------------------------------------------------------------------------- |
219 | |
220 | // byte order swapping |
221 | #define SWAP16(x)((((x) & 0xff) << 8) | (((x) >> 8) & 0xff )) ((((x) & 0xff) << 8) | (((x) >> 8) & 0xff)) |
222 | #define SWAP32(x)(((((((x) & 0xffff) & 0xff) << 8) | ((((x) & 0xffff) >> 8) & 0xff)) << 16) | ((((((x) >> 16) & 0xff) << 8) | ((((x) >> 16) >> 8 ) & 0xff)))) ((SWAP16((x) & 0xffff)(((((x) & 0xffff) & 0xff) << 8) | ((((x) & 0xffff ) >> 8) & 0xff)) << 16) | (SWAP16((x) >> 16)(((((x) >> 16) & 0xff) << 8) | ((((x) >> 16) >> 8) & 0xff)))) |
223 | |
224 | static void* WriteBytes(void* buf, const void* data, uint32_t dataLen) { |
225 | memcpy(buf, data, dataLen); |
226 | return (uint8_t*)buf + dataLen; |
227 | } |
228 | |
229 | static void* WriteDWORD(void* buf, uint32_t dword) { |
230 | #ifdef IS_BIG_ENDIAN |
231 | // NTLM uses little endian on the wire |
232 | dword = SWAP32(dword)(((((((dword) & 0xffff) & 0xff) << 8) | ((((dword ) & 0xffff) >> 8) & 0xff)) << 16) | ((((( (dword) >> 16) & 0xff) << 8) | ((((dword) >> 16) >> 8) & 0xff)))); |
233 | #endif |
234 | return WriteBytes(buf, &dword, sizeof(dword)); |
235 | } |
236 | |
237 | static void* WriteSecBuf(void* buf, uint16_t length, uint32_t offset) { |
238 | #ifdef IS_BIG_ENDIAN |
239 | length = SWAP16(length)((((length) & 0xff) << 8) | (((length) >> 8) & 0xff)); |
240 | offset = SWAP32(offset)(((((((offset) & 0xffff) & 0xff) << 8) | ((((offset ) & 0xffff) >> 8) & 0xff)) << 16) | ((((( (offset) >> 16) & 0xff) << 8) | ((((offset) >> 16) >> 8) & 0xff)))); |
241 | #endif |
242 | buf = WriteBytes(buf, &length, sizeof(length)); |
243 | buf = WriteBytes(buf, &length, sizeof(length)); |
244 | buf = WriteBytes(buf, &offset, sizeof(offset)); |
245 | return buf; |
246 | } |
247 | |
248 | #ifdef IS_BIG_ENDIAN |
249 | /** |
250 | * WriteUnicodeLE copies a unicode string from one buffer to another. The |
251 | * resulting unicode string is in little-endian format. The input string is |
252 | * assumed to be in the native endianness of the local machine. It is safe |
253 | * to pass the same buffer as both input and output, which is a handy way to |
254 | * convert the unicode buffer to little-endian on big-endian platforms. |
255 | */ |
256 | static void* WriteUnicodeLE(void* buf, const char16_t* str, uint32_t strLen) { |
257 | // convert input string from BE to LE |
258 | uint8_t *cursor = (uint8_t*)buf, *input = (uint8_t*)str; |
259 | for (uint32_t i = 0; i < strLen; ++i, input += 2, cursor += 2) { |
260 | // allow for the case where |buf == str| |
261 | uint8_t temp = input[0]; |
262 | cursor[0] = input[1]; |
263 | cursor[1] = temp; |
264 | } |
265 | return buf; |
266 | } |
267 | #endif |
268 | |
269 | static uint16_t ReadUint16(const uint8_t*& buf) { |
270 | uint16_t x = ((uint16_t)buf[0]) | ((uint16_t)buf[1] << 8); |
271 | buf += sizeof(x); |
272 | return x; |
273 | } |
274 | |
275 | static uint32_t ReadUint32(const uint8_t*& buf) { |
276 | uint32_t x = ((uint32_t)buf[0]) | (((uint32_t)buf[1]) << 8) | |
277 | (((uint32_t)buf[2]) << 16) | (((uint32_t)buf[3]) << 24); |
278 | buf += sizeof(x); |
279 | return x; |
280 | } |
281 | |
282 | //----------------------------------------------------------------------------- |
283 | |
284 | static void ZapBuf(void* buf, size_t bufLen) { memset(buf, 0, bufLen); } |
285 | |
286 | static void ZapString(nsString& s) { ZapBuf(s.BeginWriting(), s.Length() * 2); } |
287 | |
288 | /** |
289 | * NTLM_Hash computes the NTLM hash of the given password. |
290 | * |
291 | * @param password |
292 | * null-terminated unicode password. |
293 | * @param hash |
294 | * 16-byte result buffer |
295 | */ |
296 | static void NTLM_Hash(const nsString& password, unsigned char* hash) { |
297 | uint32_t len = password.Length(); |
298 | uint8_t* passbuf; |
299 | |
300 | #ifdef IS_BIG_ENDIAN |
301 | passbuf = (uint8_t*)malloc(len * 2); |
302 | WriteUnicodeLE(passbuf, password.get(), len); |
303 | #else |
304 | passbuf = (uint8_t*)password.get(); |
305 | #endif |
306 | |
307 | md4sum(passbuf, len * 2, hash); |
308 | |
309 | #ifdef IS_BIG_ENDIAN |
310 | ZapBuf(passbuf, len * 2); |
311 | free(passbuf); |
312 | #endif |
313 | } |
314 | |
315 | //----------------------------------------------------------------------------- |
316 | |
317 | /** |
318 | * LM_Response generates the LM response given a 16-byte password hash and the |
319 | * challenge from the Type-2 message. |
320 | * |
321 | * @param hash |
322 | * 16-byte password hash |
323 | * @param challenge |
324 | * 8-byte challenge from Type-2 message |
325 | * @param response |
326 | * 24-byte buffer to contain the LM response upon return |
327 | */ |
328 | static void LM_Response(const uint8_t* hash, const uint8_t* challenge, |
329 | uint8_t* response) { |
330 | uint8_t keybytes[21], k1[8], k2[8], k3[8]; |
331 | |
332 | memcpy(keybytes, hash, 16); |
333 | ZapBuf(keybytes + 16, 5); |
334 | |
335 | des_makekey(keybytes, k1); |
336 | des_makekey(keybytes + 7, k2); |
337 | des_makekey(keybytes + 14, k3); |
338 | |
339 | des_encrypt(k1, challenge, response); |
340 | des_encrypt(k2, challenge, response + 8); |
341 | des_encrypt(k3, challenge, response + 16); |
342 | } |
343 | |
344 | //----------------------------------------------------------------------------- |
345 | |
346 | static nsresult GenerateType1Msg(void** outBuf, uint32_t* outLen) { |
347 | // |
348 | // verify that bufLen is sufficient |
349 | // |
350 | *outLen = NTLM_TYPE1_HEADER_LEN32; |
351 | *outBuf = moz_xmalloc(*outLen); |
352 | |
353 | // |
354 | // write out type 1 msg |
355 | // |
356 | void* cursor = *outBuf; |
357 | |
358 | // 0 : signature |
359 | cursor = WriteBytes(cursor, NTLM_SIGNATURE, sizeof(NTLM_SIGNATURE)); |
360 | |
361 | // 8 : marker |
362 | cursor = WriteBytes(cursor, NTLM_TYPE1_MARKER, sizeof(NTLM_TYPE1_MARKER)); |
363 | |
364 | // 12 : flags |
365 | cursor = WriteDWORD(cursor, NTLM_TYPE1_FLAGS(0x00000001 | 0x00000002 | 0x00000004 | 0x00000200 | 0x00008000 | 0x00080000)); |
366 | |
367 | // |
368 | // NOTE: it is common for the domain and workstation fields to be empty. |
369 | // this is true of Win2k clients, and my guess is that there is |
370 | // little utility to sending these strings before the charset has |
371 | // been negotiated. we follow suite -- anyways, it doesn't hurt |
372 | // to save some bytes on the wire ;-) |
373 | // |
374 | |
375 | // 16 : supplied domain security buffer (empty) |
376 | cursor = WriteSecBuf(cursor, 0, 0); |
377 | |
378 | // 24 : supplied workstation security buffer (empty) |
379 | cursor = WriteSecBuf(cursor, 0, 0); |
380 | |
381 | return NS_OK; |
382 | } |
383 | |
384 | struct Type2Msg { |
385 | uint32_t flags; // NTLM_Xxx bitwise combination |
386 | uint8_t challenge[NTLM_CHAL_LEN8]; // 8 byte challenge |
387 | const uint8_t* target; // target string (type depends on flags) |
388 | uint32_t targetLen; // target length in bytes |
389 | const uint8_t* |
390 | targetInfo; // target Attribute-Value pairs (DNS domain, et al) |
391 | uint32_t targetInfoLen; // target AV pairs length in bytes |
392 | }; |
393 | |
394 | static nsresult ParseType2Msg(const void* inBuf, uint32_t inLen, |
395 | Type2Msg* msg) { |
396 | // make sure inBuf is long enough to contain a meaningful type2 msg. |
397 | // |
398 | // 0 NTLMSSP Signature |
399 | // 8 NTLM Message Type |
400 | // 12 Target Name |
401 | // 20 Flags |
402 | // 24 Challenge |
403 | // 32 targetInfo |
404 | // 48 start of optional data blocks |
405 | // |
406 | if (inLen < NTLM_TYPE2_HEADER_LEN48) return NS_ERROR_UNEXPECTED; |
407 | |
408 | const auto* cursor = static_cast<const uint8_t*>(inBuf); |
409 | |
410 | // verify NTLMSSP signature |
411 | if (memcmp(cursor, NTLM_SIGNATURE, sizeof(NTLM_SIGNATURE)) != 0) { |
412 | return NS_ERROR_UNEXPECTED; |
413 | } |
414 | |
415 | cursor += sizeof(NTLM_SIGNATURE); |
416 | |
417 | // verify Type-2 marker |
418 | if (memcmp(cursor, NTLM_TYPE2_MARKER, sizeof(NTLM_TYPE2_MARKER)) != 0) { |
419 | return NS_ERROR_UNEXPECTED; |
420 | } |
421 | |
422 | cursor += sizeof(NTLM_TYPE2_MARKER); |
423 | |
424 | // Read target name security buffer: ... |
425 | // ... read target length. |
426 | uint32_t targetLen = ReadUint16(cursor); |
427 | // ... skip next 16-bit "allocated space" value. |
428 | ReadUint16(cursor); |
429 | // ... read offset from inBuf. |
430 | uint32_t offset = ReadUint32(cursor); |
431 | mozilla::CheckedInt<uint32_t> targetEnd = offset; |
432 | targetEnd += targetLen; |
433 | // Check the offset / length combo is in range of the input buffer, including |
434 | // integer overflow checking. |
435 | if (MOZ_LIKELY(targetEnd.isValid() && targetEnd.value() <= inLen)(__builtin_expect(!!(targetEnd.isValid() && targetEnd .value() <= inLen), 1))) { |
436 | msg->targetLen = targetLen; |
437 | msg->target = static_cast<const uint8_t*>(inBuf) + offset; |
438 | } else { |
439 | // Do not error out, for (conservative) backward compatibility. |
440 | msg->targetLen = 0; |
441 | msg->target = nullptr; |
442 | } |
443 | |
444 | // read flags |
445 | msg->flags = ReadUint32(cursor); |
446 | |
447 | // read challenge |
448 | memcpy(msg->challenge, cursor, sizeof(msg->challenge)); |
449 | cursor += sizeof(msg->challenge); |
450 | |
451 | LOG(("NTLM type 2 message:\n"))do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, "NTLM type 2 message:\n" ); } } while (0); |
452 | LogBuf("target", msg->target, msg->targetLen); |
453 | LogBuf("flags", |
454 | mozilla::BitwiseCast<const uint8_t*, const uint32_t*>(&msg->flags), 4); |
455 | LogFlags(msg->flags); |
456 | LogBuf("challenge", msg->challenge, sizeof(msg->challenge)); |
457 | |
458 | // Read (and skip) the reserved field |
459 | ReadUint32(cursor); |
460 | ReadUint32(cursor); |
461 | // Read target name security buffer: ... |
462 | // ... read target length. |
463 | uint32_t targetInfoLen = ReadUint16(cursor); |
464 | // ... skip next 16-bit "allocated space" value. |
465 | ReadUint16(cursor); |
466 | // ... read offset from inBuf. |
467 | offset = ReadUint32(cursor); |
468 | mozilla::CheckedInt<uint32_t> targetInfoEnd = offset; |
469 | targetInfoEnd += targetInfoLen; |
470 | // Check the offset / length combo is in range of the input buffer, including |
471 | // integer overflow checking. |
472 | if (MOZ_LIKELY(targetInfoEnd.isValid() && targetInfoEnd.value() <= inLen)(__builtin_expect(!!(targetInfoEnd.isValid() && targetInfoEnd .value() <= inLen), 1))) { |
473 | msg->targetInfoLen = targetInfoLen; |
474 | msg->targetInfo = static_cast<const uint8_t*>(inBuf) + offset; |
475 | } else { |
476 | NS_ERROR("failed to get NTLMv2 target info")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed to get NTLMv2 target info" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 476); MOZ_PretendNoReturn(); } while (0); |
477 | return NS_ERROR_UNEXPECTED; |
478 | } |
479 | |
480 | return NS_OK; |
481 | } |
482 | |
483 | static nsresult GenerateType3Msg(const nsString& domain, |
484 | const nsString& username, |
485 | const nsString& password, const void* inBuf, |
486 | uint32_t inLen, void** outBuf, |
487 | uint32_t* outLen) { |
488 | // inBuf contains Type-2 msg (the challenge) from server |
489 | MOZ_ASSERT(NS_IsMainThread())do { static_assert( mozilla::detail::AssertionConditionType< decltype(NS_IsMainThread())>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(NS_IsMainThread()))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("NS_IsMainThread()" , "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 489); AnnotateMozCrashReason("MOZ_ASSERT" "(" "NS_IsMainThread()" ")"); do { *((volatile int*)__null) = 489; __attribute__((nomerge )) ::abort(); } while (false); } } while (false); |
490 | nsresult rv; |
491 | Type2Msg msg{}; |
492 | |
493 | rv = ParseType2Msg(inBuf, inLen, &msg); |
494 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) return rv; |
495 | |
496 | bool unicode = (msg.flags & NTLM_NegotiateUnicode0x00000001); |
497 | |
498 | // There is no negotiation for NTLMv2, so we just do it unless we are forced |
499 | // by explict user configuration to use the older DES-based cryptography. |
500 | bool ntlmv2 = !mozilla::StaticPrefs::network_auth_force_generic_ntlm_v1(); |
501 | |
502 | // temporary buffers for unicode strings |
503 | #ifdef IS_BIG_ENDIAN |
504 | nsAutoString ucsDomainBuf, ucsUserBuf; |
505 | #endif |
506 | nsAutoCString hostBuf; |
507 | nsAutoString ucsHostBuf; |
508 | // temporary buffers for oem strings |
509 | nsAutoCString oemDomainBuf, oemUserBuf, oemHostBuf; |
510 | // pointers and lengths for the string buffers; encoding is unicode if |
511 | // the "negotiate unicode" flag was set in the Type-2 message. |
512 | const void *domainPtr, *userPtr, *hostPtr; |
513 | uint32_t domainLen, userLen, hostLen; |
514 | |
515 | // This is for NTLM, for NTLMv2 we set the new full length once we know it |
516 | mozilla::CheckedInt<uint16_t> ntlmRespLen = NTLM_RESP_LEN24; |
517 | |
518 | // |
519 | // get domain name |
520 | // |
521 | if (unicode) { |
522 | #ifdef IS_BIG_ENDIAN |
523 | ucsDomainBuf = domain; |
524 | domainPtr = ucsDomainBuf.get(); |
525 | domainLen = ucsDomainBuf.Length() * 2; |
526 | WriteUnicodeLE(const_cast<void*>(domainPtr), |
527 | static_cast<const char16_t*>(domainPtr), |
528 | ucsDomainBuf.Length()); |
529 | #else |
530 | domainPtr = domain.get(); |
531 | domainLen = domain.Length() * 2; |
532 | #endif |
533 | } else { |
534 | NS_CopyUnicodeToNative(domain, oemDomainBuf); |
535 | domainPtr = oemDomainBuf.get(); |
536 | domainLen = oemDomainBuf.Length(); |
537 | } |
538 | |
539 | // |
540 | // get user name |
541 | // |
542 | if (unicode) { |
543 | #ifdef IS_BIG_ENDIAN |
544 | ucsUserBuf = username; |
545 | userPtr = ucsUserBuf.get(); |
546 | userLen = ucsUserBuf.Length() * 2; |
547 | WriteUnicodeLE(const_cast<void*>(userPtr), |
548 | static_cast<const char16_t*>(userPtr), ucsUserBuf.Length()); |
549 | #else |
550 | userPtr = username.get(); |
551 | userLen = username.Length() * 2; |
552 | #endif |
553 | } else { |
554 | NS_CopyUnicodeToNative(username, oemUserBuf); |
555 | userPtr = oemUserBuf.get(); |
556 | userLen = oemUserBuf.Length(); |
557 | } |
558 | |
559 | // |
560 | // get workstation name |
561 | // (do not use local machine's hostname after bug 1046421) |
562 | // |
563 | rv = mozilla::Preferences::GetCString("network.generic-ntlm-auth.workstation", |
564 | hostBuf); |
565 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
566 | return rv; |
567 | } |
568 | |
569 | if (unicode) { |
570 | CopyUTF8toUTF16(hostBuf, ucsHostBuf); |
571 | hostPtr = ucsHostBuf.get(); |
572 | hostLen = ucsHostBuf.Length() * 2; |
573 | #ifdef IS_BIG_ENDIAN |
574 | WriteUnicodeLE(const_cast<void*>(hostPtr), |
575 | static_cast<const char16_t*>(hostPtr), ucsHostBuf.Length()); |
576 | #endif |
577 | } else { |
578 | hostPtr = hostBuf.get(); |
579 | hostLen = hostBuf.Length(); |
580 | } |
581 | |
582 | // |
583 | // now that we have generated all of the strings, we can allocate outBuf. |
584 | // |
585 | // |
586 | // next, we compute the NTLM or NTLM2 responses. |
587 | // |
588 | uint8_t lmResp[LM_RESP_LEN24]; |
589 | uint8_t ntlmResp[NTLM_RESP_LEN24]; |
590 | uint8_t ntlmv2Resp[NTLMv2_RESP_LEN16]; |
591 | uint8_t ntlmHash[NTLM_HASH_LEN16]; |
592 | uint8_t ntlmv2_blob1[NTLMv2_BLOB1_LEN28]; |
593 | if (ntlmv2) { |
594 | // NTLMv2 mode, the default |
595 | nsString userUpper, domainUpper; |
596 | |
597 | // temporary buffers for unicode strings |
598 | nsAutoString ucsDomainUpperBuf; |
599 | nsAutoString ucsUserUpperBuf; |
600 | const void* domainUpperPtr; |
601 | const void* userUpperPtr; |
602 | uint32_t domainUpperLen; |
603 | uint32_t userUpperLen; |
604 | |
605 | if (msg.targetInfoLen == 0) { |
606 | NS_ERROR("failed to get NTLMv2 target info, can not do NTLMv2")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed to get NTLMv2 target info, can not do NTLMv2" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 606); MOZ_PretendNoReturn(); } while (0); |
607 | return NS_ERROR_UNEXPECTED; |
608 | } |
609 | |
610 | ToUpperCase(username, ucsUserUpperBuf); |
611 | userUpperPtr = ucsUserUpperBuf.get(); |
612 | userUpperLen = ucsUserUpperBuf.Length() * 2; |
613 | #ifdef IS_BIG_ENDIAN |
614 | WriteUnicodeLE(const_cast<void*>(userUpperPtr), |
615 | static_cast<const char16_t*>(userUpperPtr), |
616 | ucsUserUpperBuf.Length()); |
617 | #endif |
618 | ToUpperCase(domain, ucsDomainUpperBuf); |
619 | domainUpperPtr = ucsDomainUpperBuf.get(); |
620 | domainUpperLen = ucsDomainUpperBuf.Length() * 2; |
621 | #ifdef IS_BIG_ENDIAN |
622 | WriteUnicodeLE(const_cast<void*>(domainUpperPtr), |
623 | static_cast<const char16_t*>(domainUpperPtr), |
624 | ucsDomainUpperBuf.Length()); |
625 | #endif |
626 | |
627 | NTLM_Hash(password, ntlmHash); |
628 | |
629 | mozilla::HMAC ntlmv2HashHmac; |
630 | rv = ntlmv2HashHmac.Begin(SEC_OID_MD5, |
631 | mozilla::Span(ntlmHash, NTLM_HASH_LEN16)); |
632 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
633 | return rv; |
634 | } |
635 | rv = ntlmv2HashHmac.Update(static_cast<const uint8_t*>(userUpperPtr), |
636 | userUpperLen); |
637 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
638 | return rv; |
639 | } |
640 | rv = ntlmv2HashHmac.Update(static_cast<const uint8_t*>(domainUpperPtr), |
641 | domainUpperLen); |
642 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
643 | return rv; |
644 | } |
645 | nsTArray<uint8_t> ntlmv2Hash; |
646 | rv = ntlmv2HashHmac.End(ntlmv2Hash); |
647 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
648 | return rv; |
649 | } |
650 | |
651 | uint8_t client_random[NTLM_CHAL_LEN8]; |
652 | PK11_GenerateRandom(client_random, NTLM_CHAL_LEN8); |
653 | |
654 | mozilla::HMAC lmv2ResponseHmac; |
655 | rv = lmv2ResponseHmac.Begin(SEC_OID_MD5, mozilla::Span(ntlmv2Hash)); |
656 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
657 | return rv; |
658 | } |
659 | rv = lmv2ResponseHmac.Update(msg.challenge, NTLM_CHAL_LEN8); |
660 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
661 | return rv; |
662 | } |
663 | rv = lmv2ResponseHmac.Update(client_random, NTLM_CHAL_LEN8); |
664 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
665 | return rv; |
666 | } |
667 | nsTArray<uint8_t> lmv2Response; |
668 | rv = lmv2ResponseHmac.End(lmv2Response); |
669 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
670 | return rv; |
671 | } |
672 | |
673 | if (lmv2Response.Length() != NTLMv2_HASH_LEN16) { |
674 | return NS_ERROR_UNEXPECTED; |
675 | } |
676 | |
677 | memcpy(lmResp, lmv2Response.Elements(), NTLMv2_HASH_LEN16); |
678 | memcpy(lmResp + NTLMv2_HASH_LEN16, client_random, NTLM_CHAL_LEN8); |
679 | |
680 | memset(ntlmv2_blob1, 0, NTLMv2_BLOB1_LEN28); |
681 | |
682 | time_t unix_time; |
683 | uint64_t nt_time = time(&unix_time); |
684 | nt_time += 11644473600LL; // Number of seconds betwen 1601 and 1970 |
685 | nt_time *= 1000 * 1000 * 10; // Convert seconds to 100 ns units |
686 | |
687 | ntlmv2_blob1[0] = 1; |
688 | ntlmv2_blob1[1] = 1; |
689 | mozilla::LittleEndian::writeUint64(&ntlmv2_blob1[8], nt_time); |
690 | PK11_GenerateRandom(&ntlmv2_blob1[16], NTLM_CHAL_LEN8); |
691 | |
692 | mozilla::HMAC ntlmv2ResponseHmac; |
693 | rv = ntlmv2ResponseHmac.Begin(SEC_OID_MD5, mozilla::Span(ntlmv2Hash)); |
694 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
695 | return rv; |
696 | } |
697 | rv = ntlmv2ResponseHmac.Update(msg.challenge, NTLM_CHAL_LEN8); |
698 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
699 | return rv; |
700 | } |
701 | rv = ntlmv2ResponseHmac.Update(ntlmv2_blob1, NTLMv2_BLOB1_LEN28); |
702 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
703 | return rv; |
704 | } |
705 | rv = ntlmv2ResponseHmac.Update(msg.targetInfo, msg.targetInfoLen); |
706 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
707 | return rv; |
708 | } |
709 | nsTArray<uint8_t> ntlmv2Response; |
710 | rv = ntlmv2ResponseHmac.End(ntlmv2Response); |
711 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
712 | return rv; |
713 | } |
714 | |
715 | if (ntlmv2Response.Length() != NTLMv2_RESP_LEN16) { |
716 | return NS_ERROR_UNEXPECTED; |
717 | } |
718 | |
719 | memcpy(ntlmv2Resp, ntlmv2Response.Elements(), NTLMv2_RESP_LEN16); |
720 | ntlmRespLen = NTLMv2_RESP_LEN16 + NTLMv2_BLOB1_LEN28; |
721 | ntlmRespLen += msg.targetInfoLen; |
722 | if (!ntlmRespLen.isValid()) { |
723 | NS_ERROR("failed to do NTLMv2: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed to do NTLMv2: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 723); MOZ_PretendNoReturn(); } while (0); |
724 | return NS_ERROR_UNEXPECTED; |
725 | } |
726 | } else if (msg.flags & NTLM_NegotiateNTLM2Key0x00080000) { |
727 | // compute NTLM2 session response |
728 | nsCString sessionHashString; |
729 | |
730 | PK11_GenerateRandom(lmResp, NTLM_CHAL_LEN8); |
731 | memset(lmResp + NTLM_CHAL_LEN8, 0, LM_RESP_LEN24 - NTLM_CHAL_LEN8); |
732 | |
733 | nsCOMPtr<nsICryptoHash> hasher = |
734 | do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID"@mozilla.org/security/hash;1", &rv); |
735 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
736 | return rv; |
737 | } |
738 | rv = hasher->Init(nsICryptoHash::MD5); |
739 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
740 | return rv; |
741 | } |
742 | rv = hasher->Update(msg.challenge, NTLM_CHAL_LEN8); |
743 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
744 | return rv; |
745 | } |
746 | rv = hasher->Update(lmResp, NTLM_CHAL_LEN8); |
747 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
748 | return rv; |
749 | } |
750 | rv = hasher->Finish(false, sessionHashString); |
751 | if (NS_FAILED(rv)((bool)(__builtin_expect(!!(NS_FAILED_impl(rv)), 0)))) { |
752 | return rv; |
753 | } |
754 | |
755 | const auto* sessionHash = mozilla::BitwiseCast<const uint8_t*, const char*>( |
756 | sessionHashString.get()); |
757 | |
758 | LogBuf("NTLM2 effective key: ", sessionHash, 8); |
759 | |
760 | NTLM_Hash(password, ntlmHash); |
761 | LM_Response(ntlmHash, sessionHash, ntlmResp); |
762 | } else { |
763 | NTLM_Hash(password, ntlmHash); |
764 | LM_Response(ntlmHash, msg.challenge, ntlmResp); |
765 | |
766 | // According to http://davenport.sourceforge.net/ntlm.html#ntlmVersion2, |
767 | // the correct way to not send the LM hash is to send the NTLM hash twice |
768 | // in both the LM and NTLM response fields. |
769 | LM_Response(ntlmHash, msg.challenge, lmResp); |
770 | } |
771 | |
772 | mozilla::CheckedInt<uint32_t> totalLen = NTLM_TYPE3_HEADER_LEN64 + LM_RESP_LEN24; |
773 | totalLen += hostLen; |
774 | totalLen += domainLen; |
775 | totalLen += userLen; |
776 | totalLen += ntlmRespLen.value(); |
777 | |
778 | if (!totalLen.isValid()) { |
779 | NS_ERROR("failed preparing to allocate NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to allocate NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 779); MOZ_PretendNoReturn(); } while (0); |
780 | return NS_ERROR_FAILURE; |
781 | } |
782 | *outBuf = moz_xmalloc(totalLen.value()); |
783 | *outLen = totalLen.value(); |
784 | |
785 | // |
786 | // finally, we assemble the Type-3 msg :-) |
787 | // |
788 | void* cursor = *outBuf; |
789 | mozilla::CheckedInt<uint32_t> offset; |
790 | |
791 | // 0 : signature |
792 | cursor = WriteBytes(cursor, NTLM_SIGNATURE, sizeof(NTLM_SIGNATURE)); |
793 | |
794 | // 8 : marker |
795 | cursor = WriteBytes(cursor, NTLM_TYPE3_MARKER, sizeof(NTLM_TYPE3_MARKER)); |
796 | |
797 | // 12 : LM response sec buf |
798 | offset = NTLM_TYPE3_HEADER_LEN64; |
799 | offset += domainLen; |
800 | offset += userLen; |
801 | offset += hostLen; |
802 | if (!offset.isValid()) { |
803 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 803); MOZ_PretendNoReturn(); } while (0); |
804 | return NS_ERROR_UNEXPECTED; |
805 | } |
806 | cursor = WriteSecBuf(cursor, LM_RESP_LEN24, offset.value()); |
807 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), lmResp, LM_RESP_LEN24); |
808 | |
809 | // 20 : NTLM or NTLMv2 response sec buf |
810 | offset += LM_RESP_LEN24; |
811 | if (!offset.isValid()) { |
812 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 812); MOZ_PretendNoReturn(); } while (0); |
813 | return NS_ERROR_UNEXPECTED; |
814 | } |
815 | cursor = WriteSecBuf(cursor, ntlmRespLen.value(), offset.value()); |
816 | if (ntlmv2) { |
817 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), ntlmv2Resp, |
818 | NTLMv2_RESP_LEN16); |
819 | offset += NTLMv2_RESP_LEN16; |
820 | if (!offset.isValid()) { |
821 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 821); MOZ_PretendNoReturn(); } while (0); |
822 | return NS_ERROR_UNEXPECTED; |
823 | } |
824 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), ntlmv2_blob1, |
825 | NTLMv2_BLOB1_LEN28); |
826 | offset += NTLMv2_BLOB1_LEN28; |
827 | if (!offset.isValid()) { |
828 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 828); MOZ_PretendNoReturn(); } while (0); |
829 | return NS_ERROR_UNEXPECTED; |
830 | } |
831 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), msg.targetInfo, |
832 | msg.targetInfoLen); |
833 | } else { |
834 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), ntlmResp, |
835 | NTLM_RESP_LEN24); |
836 | } |
837 | // 28 : domain name sec buf |
838 | offset = NTLM_TYPE3_HEADER_LEN64; |
839 | cursor = WriteSecBuf(cursor, domainLen, offset.value()); |
840 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), domainPtr, domainLen); |
841 | |
842 | // 36 : user name sec buf |
843 | offset += domainLen; |
844 | if (!offset.isValid()) { |
845 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 845); MOZ_PretendNoReturn(); } while (0); |
846 | return NS_ERROR_UNEXPECTED; |
847 | } |
848 | cursor = WriteSecBuf(cursor, userLen, offset.value()); |
849 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), userPtr, userLen); |
850 | |
851 | // 44 : workstation (host) name sec buf |
852 | offset += userLen; |
853 | if (!offset.isValid()) { |
854 | NS_ERROR("failed preparing to write NTLM response: integer overflow?!?")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "failed preparing to write NTLM response: integer overflow?!?" , "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 854); MOZ_PretendNoReturn(); } while (0); |
855 | return NS_ERROR_UNEXPECTED; |
856 | } |
857 | cursor = WriteSecBuf(cursor, hostLen, offset.value()); |
858 | memcpy(static_cast<uint8_t*>(*outBuf) + offset.value(), hostPtr, hostLen); |
859 | |
860 | // 52 : session key sec buf (not used) |
861 | cursor = WriteSecBuf(cursor, 0, 0); |
862 | |
863 | // 60 : negotiated flags |
864 | cursor = WriteDWORD(cursor, msg.flags & NTLM_TYPE1_FLAGS(0x00000001 | 0x00000002 | 0x00000004 | 0x00000200 | 0x00008000 | 0x00080000)); |
Value stored to 'cursor' is never read | |
865 | |
866 | return NS_OK; |
867 | } |
868 | |
869 | //----------------------------------------------------------------------------- |
870 | |
871 | NS_IMPL_ISUPPORTS(nsNTLMAuthModule, nsIAuthModule)MozExternalRefCountType nsNTLMAuthModule::AddRef(void) { static_assert (!std::is_destructible_v<nsNTLMAuthModule>, "Reference-counted class " "nsNTLMAuthModule" " should not have a public destructor. " "Make this class's destructor non-public" ); do { static_assert( mozilla::detail::AssertionConditionType <decltype(int32_t(mRefCnt) >= 0)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0" " (" "illegal refcnt" ")", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 871); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0" ") (" "illegal refcnt" ")"); do { *((volatile int*)__null) = 871; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); do { static_assert( mozilla::detail::AssertionConditionType <decltype("nsNTLMAuthModule" != nullptr)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!("nsNTLMAuthModule" != nullptr ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "\"nsNTLMAuthModule\" != nullptr" " (" "Must specify a name" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 871); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"nsNTLMAuthModule\" != nullptr" ") (" "Must specify a name" ")"); do { *((volatile int*)__null ) = 871; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread .AssertOwnership("nsNTLMAuthModule" " not thread-safe"); nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count), ("nsNTLMAuthModule" ), (uint32_t)(sizeof(*this))); return count; } MozExternalRefCountType nsNTLMAuthModule::Release(void) { do { static_assert( mozilla ::detail::AssertionConditionType<decltype(int32_t(mRefCnt) > 0)>::isValid, "invalid assertion condition"); if ((__builtin_expect (!!(!(!!(int32_t(mRefCnt) > 0))), 0))) { do { } while (false ); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0" " (" "dup release" ")", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 871); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0" ") (" "dup release" ")"); do { *((volatile int*)__null) = 871 ; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); do { static_assert( mozilla::detail::AssertionConditionType <decltype("nsNTLMAuthModule" != nullptr)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!("nsNTLMAuthModule" != nullptr ))), 0))) { do { } while (false); MOZ_ReportAssertionFailure( "\"nsNTLMAuthModule\" != nullptr" " (" "Must specify a name" ")" , "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 871); AnnotateMozCrashReason("MOZ_ASSERT" "(" "\"nsNTLMAuthModule\" != nullptr" ") (" "Must specify a name" ")"); do { *((volatile int*)__null ) = 871; __attribute__((nomerge)) ::abort(); } while (false); } } while (false); if (!mRefCnt.isThreadSafe) _mOwningThread .AssertOwnership("nsNTLMAuthModule" " not thread-safe"); const char* const nametmp = "nsNTLMAuthModule"; nsrefcnt count = -- mRefCnt; NS_LogRelease((this), (count), (nametmp)); if (count == 0) { mRefCnt = 1; delete (this); return 0; } return count ; } nsresult nsNTLMAuthModule::QueryInterface(const nsIID& aIID, void** aInstancePtr) { do { if (!(aInstancePtr)) { NS_DebugBreak (NS_DEBUG_ASSERTION, "QueryInterface requires a non-NULL destination!" , "aInstancePtr", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 871); MOZ_PretendNoReturn(); } } while (0); nsresult rv = NS_ERROR_FAILURE ; static_assert(1 > 0, "Need more arguments to NS_INTERFACE_TABLE" ); static const QITableEntry table[] = { {&mozilla::detail ::kImplementedIID<nsNTLMAuthModule, nsIAuthModule>, int32_t ( reinterpret_cast<char*>(static_cast<nsIAuthModule* >((nsNTLMAuthModule*)0x1000)) - reinterpret_cast<char*> ((nsNTLMAuthModule*)0x1000))}, {&mozilla::detail::kImplementedIID <nsNTLMAuthModule, nsISupports>, int32_t(reinterpret_cast <char*>(static_cast<nsISupports*>( static_cast< nsIAuthModule*>((nsNTLMAuthModule*)0x1000))) - reinterpret_cast <char*>((nsNTLMAuthModule*)0x1000))}, { nullptr, 0 } } ; static_assert((sizeof(table) / sizeof(table[0])) > 1, "need at least 1 interface" ); rv = NS_TableDrivenQI(static_cast<void*>(this), aIID , aInstancePtr, table); return rv; } |
872 | |
873 | nsNTLMAuthModule::~nsNTLMAuthModule() { ZapString(mPassword); } |
874 | |
875 | nsresult nsNTLMAuthModule::InitTest() { |
876 | // disable NTLM authentication when FIPS mode is enabled. |
877 | return PK11_IsFIPS() ? NS_ERROR_NOT_AVAILABLE : NS_OK; |
878 | } |
879 | |
880 | NS_IMETHODIMPnsresult |
881 | nsNTLMAuthModule::Init(const nsACString& serviceName, uint32_t serviceFlags, |
882 | const nsAString& domain, const nsAString& username, |
883 | const nsAString& password) { |
884 | MOZ_ASSERT((serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) ==do { static_assert( mozilla::detail::AssertionConditionType< decltype((serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((serviceFlags & ~nsIAuthModule ::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" " (" "Unexpected service flags" ")", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 886); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" ") (" "Unexpected service flags" ")"); do { *((volatile int* )__null) = 886; __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
885 | nsIAuthModule::REQ_DEFAULT,do { static_assert( mozilla::detail::AssertionConditionType< decltype((serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((serviceFlags & ~nsIAuthModule ::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" " (" "Unexpected service flags" ")", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 886); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" ") (" "Unexpected service flags" ")"); do { *((volatile int* )__null) = 886; __attribute__((nomerge)) ::abort(); } while ( false); } } while (false) |
886 | "Unexpected service flags")do { static_assert( mozilla::detail::AssertionConditionType< decltype((serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT)>::isValid, "invalid assertion condition" ); if ((__builtin_expect(!!(!(!!((serviceFlags & ~nsIAuthModule ::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT))), 0))) { do { } while (false); MOZ_ReportAssertionFailure("(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" " (" "Unexpected service flags" ")", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 886); AnnotateMozCrashReason("MOZ_ASSERT" "(" "(serviceFlags & ~nsIAuthModule::REQ_PROXY_AUTH) == nsIAuthModule::REQ_DEFAULT" ") (" "Unexpected service flags" ")"); do { *((volatile int* )__null) = 886; __attribute__((nomerge)) ::abort(); } while ( false); } } while (false); |
887 | |
888 | mDomain = domain; |
889 | mUsername = username; |
890 | mPassword = password; |
891 | mNTLMNegotiateSent = false; |
892 | |
893 | static bool sTelemetrySent = false; |
894 | if (!sTelemetrySent) { |
895 | mozilla::Telemetry::Accumulate(mozilla::Telemetry::NTLM_MODULE_USED_2, |
896 | serviceFlags & nsIAuthModule::REQ_PROXY_AUTH |
897 | ? NTLM_MODULE_GENERIC_PROXY |
898 | : NTLM_MODULE_GENERIC_DIRECT); |
899 | sTelemetrySent = true; |
900 | } |
901 | |
902 | return NS_OK; |
903 | } |
904 | |
905 | NS_IMETHODIMPnsresult |
906 | nsNTLMAuthModule::GetNextToken(const void* inToken, uint32_t inTokenLen, |
907 | void** outToken, uint32_t* outTokenLen) { |
908 | nsresult rv; |
909 | |
910 | // disable NTLM authentication when FIPS mode is enabled. |
911 | if (PK11_IsFIPS()) { |
912 | return NS_ERROR_NOT_AVAILABLE; |
913 | } |
914 | |
915 | if (mNTLMNegotiateSent) { |
916 | // if inToken is non-null, and we have sent the NTLMSSP_NEGOTIATE (type 1), |
917 | // then the NTLMSSP_CHALLENGE (type 2) is expected |
918 | if (inToken) { |
919 | LogToken("in-token", inToken, inTokenLen); |
920 | // Now generate the NTLMSSP_AUTH (type 3) |
921 | rv = GenerateType3Msg(mDomain, mUsername, mPassword, inToken, inTokenLen, |
922 | outToken, outTokenLen); |
923 | } else { |
924 | LOG(do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, "NTLMSSP_NEGOTIATE already sent and presumably " "rejected by the server, refusing to send another"); } } while (0) |
925 | ("NTLMSSP_NEGOTIATE already sent and presumably "do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, "NTLMSSP_NEGOTIATE already sent and presumably " "rejected by the server, refusing to send another"); } } while (0) |
926 | "rejected by the server, refusing to send another"))do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, "NTLMSSP_NEGOTIATE already sent and presumably " "rejected by the server, refusing to send another"); } } while (0); |
927 | rv = NS_ERROR_UNEXPECTED; |
928 | } |
929 | } else { |
930 | if (inToken) { |
931 | LOG(("NTLMSSP_NEGOTIATE not sent but NTLM reply already received?!?"))do { const ::mozilla::LogModule* moz_real_module = sNTLMLog; if ((__builtin_expect(!!(mozilla::detail::log_test(moz_real_module , mozilla::LogLevel::Debug)), 0))) { mozilla::detail::log_print (moz_real_module, mozilla::LogLevel::Debug, "NTLMSSP_NEGOTIATE not sent but NTLM reply already received?!?" ); } } while (0); |
932 | rv = NS_ERROR_UNEXPECTED; |
933 | } else { |
934 | rv = GenerateType1Msg(outToken, outTokenLen); |
935 | if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) { |
936 | mNTLMNegotiateSent = true; |
937 | } |
938 | } |
939 | } |
940 | |
941 | if (NS_SUCCEEDED(rv)((bool)(__builtin_expect(!!(!NS_FAILED_impl(rv)), 1)))) LogToken("out-token", *outToken, *outTokenLen); |
942 | |
943 | return rv; |
944 | } |
945 | |
946 | NS_IMETHODIMPnsresult |
947 | nsNTLMAuthModule::Unwrap(const void* inToken, uint32_t inTokenLen, |
948 | void** outToken, uint32_t* outTokenLen) { |
949 | return NS_ERROR_NOT_IMPLEMENTED; |
950 | } |
951 | |
952 | NS_IMETHODIMPnsresult |
953 | nsNTLMAuthModule::Wrap(const void* inToken, uint32_t inTokenLen, |
954 | bool confidential, void** outToken, |
955 | uint32_t* outTokenLen) { |
956 | return NS_ERROR_NOT_IMPLEMENTED; |
957 | } |
958 | |
959 | //----------------------------------------------------------------------------- |
960 | // DES support code |
961 | |
962 | // set odd parity bit (in least significant bit position) |
963 | static uint8_t des_setkeyparity(uint8_t x) { |
964 | if ((((x >> 7) ^ (x >> 6) ^ (x >> 5) ^ (x >> 4) ^ (x >> 3) ^ (x >> 2) ^ |
965 | (x >> 1)) & |
966 | 0x01) == 0) { |
967 | x |= 0x01; |
968 | } else { |
969 | x &= 0xfe; |
970 | } |
971 | return x; |
972 | } |
973 | |
974 | // build 64-bit des key from 56-bit raw key |
975 | static void des_makekey(const uint8_t* raw, uint8_t* key) { |
976 | key[0] = des_setkeyparity(raw[0]); |
977 | key[1] = des_setkeyparity((raw[0] << 7) | (raw[1] >> 1)); |
978 | key[2] = des_setkeyparity((raw[1] << 6) | (raw[2] >> 2)); |
979 | key[3] = des_setkeyparity((raw[2] << 5) | (raw[3] >> 3)); |
980 | key[4] = des_setkeyparity((raw[3] << 4) | (raw[4] >> 4)); |
981 | key[5] = des_setkeyparity((raw[4] << 3) | (raw[5] >> 5)); |
982 | key[6] = des_setkeyparity((raw[5] << 2) | (raw[6] >> 6)); |
983 | key[7] = des_setkeyparity((raw[6] << 1)); |
984 | } |
985 | |
986 | // run des encryption algorithm (using NSS) |
987 | static void des_encrypt(const uint8_t* key, const uint8_t* src, uint8_t* hash) { |
988 | CK_MECHANISM_TYPE cipherMech = CKM_DES_ECB0x00000121UL; |
989 | PK11SymKey* symkey = nullptr; |
990 | PK11Context* ctxt = nullptr; |
991 | SECItem keyItem; |
992 | mozilla::UniqueSECItem param; |
993 | SECStatus rv; |
994 | unsigned int n; |
995 | |
996 | mozilla::UniquePK11SlotInfo slot(PK11_GetBestSlot(cipherMech, nullptr)); |
997 | if (!slot) { |
998 | NS_ERROR("no slot")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "no slot", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 998); MOZ_PretendNoReturn(); } while (0); |
999 | goto done; |
1000 | } |
1001 | |
1002 | keyItem.data = const_cast<uint8_t*>(key); |
1003 | keyItem.len = 8; |
1004 | symkey = PK11_ImportSymKey(slot.get(), cipherMech, PK11_OriginUnwrap, |
1005 | CKA_ENCRYPT0x00000104UL, &keyItem, nullptr); |
1006 | if (!symkey) { |
1007 | NS_ERROR("no symkey")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "no symkey", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 1007); MOZ_PretendNoReturn(); } while (0); |
1008 | goto done; |
1009 | } |
1010 | |
1011 | // no initialization vector required |
1012 | param = mozilla::UniqueSECItem(PK11_ParamFromIV(cipherMech, nullptr)); |
1013 | if (!param) { |
1014 | NS_ERROR("no param")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "no param", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 1014); MOZ_PretendNoReturn(); } while (0); |
1015 | goto done; |
1016 | } |
1017 | |
1018 | ctxt = |
1019 | PK11_CreateContextBySymKey(cipherMech, CKA_ENCRYPT0x00000104UL, symkey, param.get()); |
1020 | if (!ctxt) { |
1021 | NS_ERROR("no context")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "no context", "Error", "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 1021); MOZ_PretendNoReturn(); } while (0); |
1022 | goto done; |
1023 | } |
1024 | |
1025 | rv = PK11_CipherOp(ctxt, hash, (int*)&n, 8, (uint8_t*)src, 8); |
1026 | if (rv != SECSuccess) { |
1027 | NS_ERROR("des failure")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "des failure", "Error" , "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 1027); MOZ_PretendNoReturn(); } while (0); |
1028 | goto done; |
1029 | } |
1030 | |
1031 | rv = PK11_DigestFinal(ctxt, hash + 8, &n, 0); |
1032 | if (rv != SECSuccess) { |
1033 | NS_ERROR("des failure")do { NS_DebugBreak(NS_DEBUG_ASSERTION, "des failure", "Error" , "/var/lib/jenkins/workspace/firefox-scan-build/security/manager/ssl/nsNTLMAuthModule.cpp" , 1033); MOZ_PretendNoReturn(); } while (0); |
1034 | goto done; |
1035 | } |
1036 | |
1037 | done: |
1038 | if (ctxt) PK11_DestroyContext(ctxt, true); |
1039 | if (symkey) PK11_FreeSymKey(symkey); |
1040 | } |