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nss-fips-safe-memset.patch
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File nss-fips-safe-memset.patch of Package mozilla-nss
Index: nss/lib/freebl/aeskeywrap.c =================================================================== --- nss.orig/lib/freebl/aeskeywrap.c +++ nss/lib/freebl/aeskeywrap.c @@ -513,7 +513,7 @@ AESKeyWrap_EncryptKWP(AESKeyWrapContext PORT_Memcpy(iv + AES_KEY_WRAP_BLOCK_SIZE, input, inputLen); rv = AES_Encrypt(&cx->aescx, output, pOutputLen, maxOutputLen, iv, outLen); - PORT_Memset(iv, 0, sizeof(iv)); + PORT_SafeZero(iv, sizeof(iv)); return rv; } @@ -529,7 +529,7 @@ AESKeyWrap_EncryptKWP(AESKeyWrapContext PORT_ZFree(newBuf, paddedInputLen); /* a little overkill, we only need to clear out the length, but this * is easier to verify we got it all */ - PORT_Memset(iv, 0, sizeof(iv)); + PORT_SafeZero(iv, sizeof(iv)); return rv; } @@ -632,12 +632,12 @@ AESKeyWrap_DecryptKWP(AESKeyWrapContext loser: /* if we failed, make sure we don't return any data to the user */ if ((rv != SECSuccess) && (output == newBuf)) { - PORT_Memset(newBuf, 0, paddedLen); + PORT_SafeZero(newBuf, paddedLen); } /* clear out CSP sensitive data from the heap and stack */ if (allocBuf) { PORT_ZFree(allocBuf, paddedLen); } - PORT_Memset(iv, 0, sizeof(iv)); + PORT_SafeZero(iv, sizeof(iv)); return rv; } Index: nss/lib/freebl/blapii.h =================================================================== --- nss.orig/lib/freebl/blapii.h +++ nss/lib/freebl/blapii.h @@ -113,10 +113,10 @@ PRBool ppc_crypto_support(); #ifdef NSS_FIPS_DISABLED #define BLAPI_CLEAR_STACK(stack_size) #else -#define BLAPI_CLEAR_STACK(stack_size) \ - { \ - volatile char _stkclr[stack_size]; \ - PORT_Memset((void *)&_stkclr[0], 0, stack_size); \ +#define BLAPI_CLEAR_STACK(stack_size) \ + { \ + volatile char _stkclr[stack_size]; \ + PORT_SafeZero((void *)&_stkclr[0], stack_size); \ } #endif Index: nss/lib/freebl/drbg.c =================================================================== --- nss.orig/lib/freebl/drbg.c +++ nss/lib/freebl/drbg.c @@ -218,7 +218,7 @@ prng_initEntropy(void) SHA256_Update(&ctx, block, sizeof(block)); SHA256_End(&ctx, globalrng->previousEntropyHash, NULL, sizeof(globalrng->previousEntropyHash)); - PORT_Memset(block, 0, sizeof(block)); + PORT_SafeZero(block, sizeof(block)); SHA256_DestroyContext(&ctx, PR_FALSE); coRNGInitEntropy.status = PR_SUCCESS; __sync_synchronize (); @@ -270,8 +270,8 @@ prng_getEntropy(PRUint8 *buffer, size_t } out: - PORT_Memset(hash, 0, sizeof hash); - PORT_Memset(block, 0, sizeof block); + PORT_SafeZero(hash, sizeof hash); + PORT_SafeZero(block, sizeof block); return rv; } @@ -417,8 +417,8 @@ prng_Hashgen(RNGContext *rng, PRUint8 *r PRNG_ADD_CARRY_ONLY(data, (sizeof data) - 1, carry); SHA256_DestroyContext(&ctx, PR_FALSE); } - PORT_Memset(data, 0, sizeof data); - PORT_Memset(thisHash, 0, sizeof thisHash); + PORT_SafeZero(data, sizeof data); + PORT_SafeZero(thisHash, sizeof thisHash); } /* @@ -479,7 +479,7 @@ prng_generateNewBytes(RNGContext *rng, PRNG_ADD_CARRY_ONLY(rng->reseed_counter, (sizeof rng->reseed_counter) - 1, carry); /* if the prng failed, don't return any output, signal softoken */ - PORT_Memset(H, 0, sizeof H); + PORT_SafeZero(H, sizeof H); if (!rng->isValid) { PORT_Memset(returned_bytes, 0, no_of_returned_bytes); PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); Index: nss/lib/freebl/dsa.c =================================================================== --- nss.orig/lib/freebl/dsa.c +++ nss/lib/freebl/dsa.c @@ -471,7 +471,7 @@ dsa_SignDigest(DSAPrivateKey *key, SECIt err = MP_OKAY; signature->len = dsa_signature_len; cleanup: - PORT_Memset(localDigestData, 0, DSA_MAX_SUBPRIME_LEN); + PORT_SafeZero(localDigestData, DSA_MAX_SUBPRIME_LEN); mp_clear(&p); mp_clear(&q); mp_clear(&g); @@ -532,7 +532,7 @@ DSA_SignDigest(DSAPrivateKey *key, SECIt rv = dsa_SignDigest(key, signature, digest, kSeed); } while (rv != SECSuccess && PORT_GetError() == SEC_ERROR_NEED_RANDOM && --retries > 0); - PORT_Memset(kSeed, 0, sizeof kSeed); + PORT_SafeZero(kSeed, sizeof kSeed); return rv; } @@ -673,7 +673,7 @@ DSA_VerifyDigest(DSAPublicKey *key, cons verified = SECSuccess; /* Signature verified. */ } cleanup: - PORT_Memset(localDigestData, 0, sizeof localDigestData); + PORT_SafeZero(localDigestData, sizeof localDigestData); mp_clear(&p); mp_clear(&q); mp_clear(&g); Index: nss/lib/freebl/gcm.c =================================================================== --- nss.orig/lib/freebl/gcm.c +++ nss/lib/freebl/gcm.c @@ -507,7 +507,7 @@ gcmHash_Final(gcmHashContext *ghash, uns rv = SECSuccess; cleanup: - PORT_Memset(T, 0, sizeof(T)); + PORT_SafeZero(T, sizeof(T)); return rv; } @@ -629,15 +629,15 @@ GCM_CreateContext(void *context, freeblC if (rv != SECSuccess) { goto loser; } - PORT_Memset(H, 0, AES_BLOCK_SIZE); + PORT_SafeZero(H, AES_BLOCK_SIZE); gcm->ctr_context_init = PR_TRUE; return gcm; loser: - PORT_Memset(H, 0, AES_BLOCK_SIZE); + PORT_SafeZero(H, AES_BLOCK_SIZE); if (ghash && ghash->mem) { void *mem = ghash->mem; - PORT_Memset(ghash, 0, sizeof(gcmHashContext)); + PORT_SafeZero(ghash, sizeof(gcmHashContext)); PORT_Free(mem); } if (gcm) { @@ -717,11 +717,11 @@ gcm_InitCounter(GCMContext *gcm, const u goto loser; } - PORT_Memset(&ctrParams, 0, sizeof ctrParams); + PORT_SafeZero(&ctrParams, sizeof ctrParams); return SECSuccess; loser: - PORT_Memset(&ctrParams, 0, sizeof ctrParams); + PORT_SafeZero(&ctrParams, sizeof ctrParams); if (freeCtr) { CTR_DestroyContext(&gcm->ctr_context, PR_FALSE); } @@ -1212,10 +1212,10 @@ GCM_DecryptAEAD(GCMContext *gcm, unsigne /* force a CKR_ENCRYPTED_DATA_INVALID error at in softoken */ CTR_DestroyContext(&gcm->ctr_context, PR_FALSE); PORT_SetError(SEC_ERROR_BAD_DATA); - PORT_Memset(tag, 0, sizeof(tag)); + PORT_SafeZero(tag, sizeof(tag)); return SECFailure; } - PORT_Memset(tag, 0, sizeof(tag)); + PORT_SafeZero(tag, sizeof(tag)); /* finish the decryption */ rv = CTR_Update(&gcm->ctr_context, outbuf, outlen, maxout, inbuf, inlen, AES_BLOCK_SIZE); Index: nss/lib/freebl/hmacct.c =================================================================== --- nss.orig/lib/freebl/hmacct.c +++ nss/lib/freebl/hmacct.c @@ -274,10 +274,10 @@ MAC(unsigned char *mdOut, hashObj->end(mdState, mdOut, mdOutLen, mdOutMax); hashObj->destroy(mdState, PR_TRUE); - PORT_Memset(lengthBytes, 0, sizeof lengthBytes); - PORT_Memset(hmacPad, 0, sizeof hmacPad); - PORT_Memset(firstBlock, 0, sizeof firstBlock); - PORT_Memset(macOut, 0, sizeof macOut); + PORT_SafeZero(lengthBytes, sizeof lengthBytes); + PORT_SafeZero(hmacPad, sizeof hmacPad); + PORT_SafeZero(firstBlock, sizeof firstBlock); + PORT_SafeZero(macOut, sizeof macOut); return SECSuccess; } Index: nss/lib/freebl/intel-gcm-wrap.c =================================================================== --- nss.orig/lib/freebl/intel-gcm-wrap.c +++ nss/lib/freebl/intel-gcm-wrap.c @@ -195,7 +195,7 @@ intel_aes_gcmInitCounter(intel_AES_GCMCo void intel_AES_GCM_DestroyContext(intel_AES_GCMContext *gcm, PRBool freeit) { - PORT_Memset(gcm, 0, sizeof(intel_AES_GCMContext)); + PORT_SafeZero(gcm, sizeof(intel_AES_GCMContext)); if (freeit) { PORT_Free(gcm); } Index: nss/lib/freebl/ppc-gcm-wrap.c =================================================================== --- nss.orig/lib/freebl/ppc-gcm-wrap.c +++ nss/lib/freebl/ppc-gcm-wrap.c @@ -169,7 +169,7 @@ ppc_aes_gcmInitCounter(ppc_AES_GCMContex void ppc_AES_GCM_DestroyContext(ppc_AES_GCMContext *gcm, PRBool freeit) { - PORT_Memset(gcm, 0, sizeof(ppc_AES_GCMContext)); + PORT_SafeZero(gcm, sizeof(ppc_AES_GCMContext)); if (freeit) { PORT_Free(gcm); } Index: nss/lib/freebl/pqg.c =================================================================== --- nss.orig/lib/freebl/pqg.c +++ nss/lib/freebl/pqg.c @@ -703,7 +703,7 @@ cleanup: mp_clear(&a); mp_clear(&z); mp_clear(&two_length_minus_1); - PORT_Memset(x, 0, sizeof(x)); + PORT_SafeZero(x, sizeof(x)); if (err) { MP_TO_SEC_ERROR(err); rv = SECFailure; @@ -859,7 +859,7 @@ cleanup: mp_clear(&c); mp_clear(&c0); mp_clear(&one); - PORT_Memset(x, 0, sizeof(x)); + PORT_SafeZero(x, sizeof(x)); if (err) { MP_TO_SEC_ERROR(err); rv = SECFailure; @@ -1072,7 +1072,7 @@ makePfromQandSeed( CHECK_MPI_OK(mp_sub_d(&c, 1, &c)); /* c -= 1 */ CHECK_MPI_OK(mp_sub(&X, &c, P)); /* P = X - c */ cleanup: - PORT_Memset(V_j, 0, sizeof V_j); + PORT_SafeZero(V_j, sizeof V_j); mp_clear(&W); mp_clear(&X); mp_clear(&c); @@ -1221,7 +1221,7 @@ makeGfromIndex(HASH_HashType hashtype, /* step 11. * return valid G */ cleanup: - PORT_Memset(data, 0, sizeof(data)); + PORT_SafeZero(data, sizeof(data)); if (hashcx) { hashobj->destroy(hashcx, PR_TRUE); } Index: nss/lib/freebl/rijndael.c =================================================================== --- nss.orig/lib/freebl/rijndael.c +++ nss/lib/freebl/rijndael.c @@ -1251,7 +1251,7 @@ AES_DestroyContext(AESContext *cx, PRBoo cx->worker_cx = NULL; cx->destroy = NULL; } - PORT_Memset(cx, 0, sizeof(AESContext)); + PORT_SafeZero(cx, sizeof(AESContext)); if (freeit) { PORT_Free(mem); } else { Index: nss/lib/freebl/rsa.c =================================================================== --- nss.orig/lib/freebl/rsa.c +++ nss/lib/freebl/rsa.c @@ -145,8 +145,8 @@ rsa_build_from_primes(const mp_int *p, c /* 2. Compute phi = (p-1)*(q-1) */ CHECK_MPI_OK(mp_sub_d(p, 1, &psub1)); CHECK_MPI_OK(mp_sub_d(q, 1, &qsub1)); + CHECK_MPI_OK(mp_lcm(&psub1, &qsub1, &phi)); if (needPublicExponent || needPrivateExponent) { - CHECK_MPI_OK(mp_lcm(&psub1, &qsub1, &phi)); /* 3. Compute d = e**-1 mod(phi) */ /* or e = d**-1 mod(phi) as necessary */ if (needPublicExponent) { @@ -180,6 +180,15 @@ rsa_build_from_primes(const mp_int *p, c goto cleanup; } + /* make sure we weren't passed in a d or e = 1 mod phi */ + /* just need to check d, because if one is = 1 mod phi, they both are */ + CHECK_MPI_OK(mp_mod(d, &phi, &tmp)); + if (mp_cmp_d(&tmp, 2) <= 0) { + PORT_SetError(SEC_ERROR_INVALID_ARGS); + rv = SECFailure; + goto cleanup; + } + /* 4. Compute exponent1 = d mod (p-1) */ CHECK_MPI_OK(mp_mod(d, &psub1, &tmp)); MPINT_TO_SECITEM(&tmp, &key->exponent1, key->arena); @@ -1251,6 +1260,8 @@ rsa_PrivateKeyOpCRTCheckedPubKey(RSAPriv /* Perform a public key operation v = m ** e mod n */ CHECK_MPI_OK(mp_exptmod(m, &e, &n, &v)); if (mp_cmp(&v, c) != 0) { + /* this error triggers a fips fatal error lock */ + PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); rv = SECFailure; } cleanup: Index: nss/lib/freebl/rsapkcs.c =================================================================== --- nss.orig/lib/freebl/rsapkcs.c +++ nss/lib/freebl/rsapkcs.c @@ -978,14 +978,14 @@ rsa_GetHMACContext(const SECHashObject * /* now create the hmac key */ hmac = HMAC_Create(hash, keyHash, keyLen, PR_TRUE); if (hmac == NULL) { - PORT_Memset(keyHash, 0, sizeof(keyHash)); + PORT_SafeZero(keyHash, sizeof(keyHash)); return NULL; } HMAC_Begin(hmac); HMAC_Update(hmac, input, inputLen); rv = HMAC_Finish(hmac, keyHash, &keyLen, sizeof(keyHash)); if (rv != SECSuccess) { - PORT_Memset(keyHash, 0, sizeof(keyHash)); + PORT_SafeZero(keyHash, sizeof(keyHash)); HMAC_Destroy(hmac, PR_TRUE); return NULL; } @@ -993,7 +993,7 @@ rsa_GetHMACContext(const SECHashObject * * reuse the original context allocated above so we don't * need to allocate and free another one */ rv = HMAC_ReInit(hmac, hash, keyHash, keyLen, PR_TRUE); - PORT_Memset(keyHash, 0, sizeof(keyHash)); + PORT_SafeZero(keyHash, sizeof(keyHash)); if (rv != SECSuccess) { HMAC_Destroy(hmac, PR_TRUE); return NULL; @@ -1043,7 +1043,7 @@ rsa_HMACPrf(HMACContext *hmac, const cha return rv; } PORT_Memcpy(output, hmacLast, left); - PORT_Memset(hmacLast, 0, sizeof(hmacLast)); + PORT_SafeZero(hmacLast, sizeof(hmacLast)); } return rv; } @@ -1088,7 +1088,7 @@ rsa_GetErrorLength(HMACContext *hmac, in outLength = PORT_CT_SEL(PORT_CT_LT(candidate, maxLegalLen), candidate, outLength); } - PORT_Memset(out, 0, sizeof(out)); + PORT_SafeZero(out, sizeof(out)); return outLength; } Index: nss/lib/freebl/shvfy.c =================================================================== --- nss.orig/lib/freebl/shvfy.c +++ nss/lib/freebl/shvfy.c @@ -365,7 +365,7 @@ blapi_SHVerifyDSACheck(PRFileDesc *shFD, /* verify the hash against the check file */ rv = DSA_VerifyDigest(key, signature, &hash); - PORT_Memset(hashBuf, 0, sizeof hashBuf); + PORT_SafeZero(hashBuf, sizeof hashBuf); return (rv == SECSuccess) ? PR_TRUE : PR_FALSE; } #endif @@ -427,7 +427,7 @@ blapi_SHVerifyHMACCheck(PRFileDesc *shFD if (rv == SECSuccess) { result = SECITEM_ItemsAreEqual(signature, &hash); } - PORT_Memset(hashBuf, 0, sizeof hashBuf); + PORT_SafeZero(hashBuf, sizeof hashBuf); return result; } @@ -451,7 +451,7 @@ blapi_SHVerifyFile(const char *shName, P #ifndef NSS_STRICT_INTEGRITY DSAPublicKey key; - PORT_Memset(&key, 0, sizeof(key)); + PORT_SafeZero(&key, sizeof(key)); #endif /* If our integrity check was never ran or failed, fail any other @@ -600,7 +600,7 @@ blapi_SHVerifyFile(const char *shName, P shFD = NULL; loser: - PORT_Memset(&header, 0, sizeof header); + PORT_SafeZero(&header, sizeof header); if (checkName != NULL) { PORT_Free(checkName); } Index: nss/lib/freebl/tlsprfalg.c =================================================================== --- nss.orig/lib/freebl/tlsprfalg.c +++ nss/lib/freebl/tlsprfalg.c @@ -82,8 +82,8 @@ loser: /* clear out state so it's not left on the stack */ if (cx) HMAC_Destroy(cx, PR_TRUE); - PORT_Memset(state, 0, sizeof(state)); - PORT_Memset(outbuf, 0, sizeof(outbuf)); + PORT_SafeZero(state, sizeof(state)); + PORT_SafeZero(outbuf, sizeof(outbuf)); return rv; } Index: nss/lib/freebl/unix_urandom.c =================================================================== --- nss.orig/lib/freebl/unix_urandom.c +++ nss/lib/freebl/unix_urandom.c @@ -22,7 +22,7 @@ RNG_SystemInfoForRNG(void) return; } RNG_RandomUpdate(bytes, numBytes); - PORT_Memset(bytes, 0, sizeof bytes); + PORT_SafeZero(bytes, sizeof bytes); } size_t Index: nss/lib/softoken/pkcs11c.c =================================================================== --- nss.orig/lib/softoken/pkcs11c.c +++ nss/lib/softoken/pkcs11c.c @@ -5105,7 +5105,7 @@ pairwise_signverify_mech (CK_SESSION_HAN if ((signature_length >= pairwise_digest_length) && (PORT_Memcmp(known_digest, signature + (signature_length - pairwise_digest_length), pairwise_digest_length) == 0)) { PORT_Free(signature); - return CKR_DEVICE_ERROR; + return CKR_GENERAL_ERROR; } /* Verify the known hash using the public key. */ Index: nss/lib/util/secport.h =================================================================== --- nss.orig/lib/util/secport.h +++ nss/lib/util/secport.h @@ -36,6 +36,9 @@ #include <sys/types.h> #include <ctype.h> +/* ask for Annex K for memset_s. will set the appropriate #define + * if Annex K is supported */ +#define __STDC_WANT_LIB_EXT1__ 1 #include <string.h> #include <stddef.h> #include <stdlib.h> @@ -178,6 +181,39 @@ SEC_END_PROTOS #define PORT_Memmove memmove #define PORT_Memset memset +/* there are cases where the compiler optimizes away our attempt to clear + * out our stack variables. There are multiple solutions for this problem, + * but they aren't universally accepted on all platforms. This attempts + * to select the best solution available given our os, compilier, and libc */ +#ifdef __STDC_LIB_EXT1__ +/* if the os implements C11 annex K, use memset_s */ +#define PORT_SafeZero(p, n) memset_s(p, n, 0, n) +#else +#ifdef XP_WIN +/* windows has a secure zero funtion */ +#define PORT_SafeZero(p, n) SecureZeroMemory(p, n) +#else +/* _DEFAULT_SORUCE == BSD source in GCC based environments + * if other environmens support explicit_bzero, their defines + * should be added here */ +#if defined(_DEFAULT_SOURCE) || defined(_BSD_SOURCE) +#define PORT_SafeZero(p, n) explicit_bzero(p, n) +#else +/* if the os doesn't support one of the above, but does support + * memset_explicit, you can add the definition for memset with the + * appropriate define check here */ +/* define an explicitly implementated Safe zero if the OS + * doesn't provide one */ +#define PORT_SafeZero(p, n) \ + if (p != NULL) { \ + volatile unsigned char *__vl = (unsigned char *)p; \ + size_t __nl = n; \ + while (__nl--) *__vl++ = 0; \ + } +#endif /* no explicit_bzero */ +#endif /* no windows SecureZeroMemory */ +#endif /* no memset_s */ + #define PORT_Strcasecmp PL_strcasecmp #define PORT_Strcat strcat #define PORT_Strchr strchr
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