diff options
| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2019-09-09 19:12:25 +0200 |
|---|---|---|
| committer | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2019-09-13 13:21:13 +0200 |
| commit | f28bc7d386b25fb75625d0c62c6b2e6d21de0d09 (patch) | |
| tree | ee6528431b68d77b37e6d65b98dc33237d8ed1aa /crypto | |
| parent | e9147bd408db3c1fe262688dc3debe372c42fa24 (diff) | |
Fix potential memory leaks with BN_to_ASN1_INTEGER
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9833)
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/ec/ec_asn1.c | 7 | ||||
| -rw-r--r-- | crypto/x509/v3_asid.c | 26 |
2 files changed, 25 insertions, 8 deletions
diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c index e0d02bb01a..2726f5d151 100644 --- a/crypto/ec/ec_asn1.c +++ b/crypto/ec/ec_asn1.c @@ -449,6 +449,7 @@ ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, unsigned char *buffer = NULL; const EC_POINT *point = NULL; point_conversion_form_t form; + ASN1_INTEGER *orig; if (params == NULL) { if ((ret = ECPARAMETERS_new()) == NULL) { @@ -499,8 +500,9 @@ ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_EC_LIB); goto err; } - ret->order = BN_to_ASN1_INTEGER(tmp, ret->order); + ret->order = BN_to_ASN1_INTEGER(tmp, orig = ret->order); if (ret->order == NULL) { + ret->order = orig; ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB); goto err; } @@ -508,8 +510,9 @@ ECPARAMETERS *EC_GROUP_get_ecparameters(const EC_GROUP *group, /* set the cofactor (optional) */ tmp = EC_GROUP_get0_cofactor(group); if (tmp != NULL) { - ret->cofactor = BN_to_ASN1_INTEGER(tmp, ret->cofactor); + ret->cofactor = BN_to_ASN1_INTEGER(tmp, orig = ret->cofactor); if (ret->cofactor == NULL) { + ret->cofactor = orig; ECerr(EC_F_EC_GROUP_GET_ECPARAMETERS, ERR_R_ASN1_LIB); goto err; } diff --git a/crypto/x509/v3_asid.c b/crypto/x509/v3_asid.c index 1d41380c41..2287675005 100644 --- a/crypto/x509/v3_asid.c +++ b/crypto/x509/v3_asid.c @@ -256,6 +256,7 @@ static int extract_min_max(ASIdOrRange *aor, static int ASIdentifierChoice_is_canonical(ASIdentifierChoice *choice) { ASN1_INTEGER *a_max_plus_one = NULL; + ASN1_INTEGER *orig; BIGNUM *bn = NULL; int i, ret = 0; @@ -298,9 +299,15 @@ static int ASIdentifierChoice_is_canonical(ASIdentifierChoice *choice) */ if ((bn == NULL && (bn = BN_new()) == NULL) || ASN1_INTEGER_to_BN(a_max, bn) == NULL || - !BN_add_word(bn, 1) || - (a_max_plus_one = - BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) { + !BN_add_word(bn, 1)) { + X509V3err(X509V3_F_ASIDENTIFIERCHOICE_IS_CANONICAL, + ERR_R_MALLOC_FAILURE); + goto done; + } + + if ((a_max_plus_one = + BN_to_ASN1_INTEGER(bn, orig = a_max_plus_one)) == NULL) { + a_max_plus_one = orig; X509V3err(X509V3_F_ASIDENTIFIERCHOICE_IS_CANONICAL, ERR_R_MALLOC_FAILURE); goto done; @@ -351,6 +358,7 @@ int X509v3_asid_is_canonical(ASIdentifiers *asid) static int ASIdentifierChoice_canonize(ASIdentifierChoice *choice) { ASN1_INTEGER *a_max_plus_one = NULL; + ASN1_INTEGER *orig; BIGNUM *bn = NULL; int i, ret = 0; @@ -416,9 +424,15 @@ static int ASIdentifierChoice_canonize(ASIdentifierChoice *choice) */ if ((bn == NULL && (bn = BN_new()) == NULL) || ASN1_INTEGER_to_BN(a_max, bn) == NULL || - !BN_add_word(bn, 1) || - (a_max_plus_one = - BN_to_ASN1_INTEGER(bn, a_max_plus_one)) == NULL) { + !BN_add_word(bn, 1)) { + X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE, + ERR_R_MALLOC_FAILURE); + goto done; + } + + if ((a_max_plus_one = + BN_to_ASN1_INTEGER(bn, orig = a_max_plus_one)) == NULL) { + a_max_plus_one = orig; X509V3err(X509V3_F_ASIDENTIFIERCHOICE_CANONIZE, ERR_R_MALLOC_FAILURE); goto done; |