fix potential memory leaks

PR: 1462

diff --git a/crypto/pkcs7/pk7_doit.c b/crypto/pkcs7/pk7_doit.c
index 001c8b918417f86a9d40ef633e3d9beb6fdbf52d..655c30efa3b35da9ecb12d4f75974f7990d35854 100644 (file)
--- a/crypto/pkcs7/pk7_doit.c
+++ b/crypto/pkcs7/pk7_doit.c
@@ -331,7 +331,9 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                keylen=EVP_CIPHER_key_length(evp_cipher);
                ivlen=EVP_CIPHER_iv_length(evp_cipher);
                xalg->algorithm = OBJ_nid2obj(EVP_CIPHER_type(evp_cipher));
-               if (ivlen > 0) RAND_pseudo_bytes(iv,ivlen);
+               if (ivlen > 0)
+                       if (RAND_pseudo_bytes(iv,ivlen) <= 0)
+                               goto err;
                if (EVP_CipherInit_ex(ctx, evp_cipher, NULL, NULL, NULL, 1)<=0)
                        goto err;
                if (EVP_CIPHER_CTX_rand_key(ctx, key) <= 0)
@@ -340,10 +342,13 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                        goto err;
 
                if (ivlen > 0) {
-                       if (xalg->parameter == NULL) 
-                                               xalg->parameter=ASN1_TYPE_new();
+                       if (xalg->parameter == NULL) {
+                               xalg->parameter = ASN1_TYPE_new();
+                               if (xalg->parameter == NULL)
+                                       goto err;
+                       }
                        if(EVP_CIPHER_param_to_asn1(ctx, xalg->parameter) < 0)
-                                                                      goto err;
+                               goto err;
                }
 
                /* Lets do the pub key stuff :-) */
@@ -371,6 +376,8 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
                if(bio == NULL)
                        {
                        bio=BIO_new(BIO_s_mem());
+                       if (bio == NULL)
+                               goto err;
                        BIO_set_mem_eof_return(bio,0);
                        }
                }
@@ -613,6 +620,8 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKEY *pkey, BIO *in_bio, X509 *pcert)
                        bio=BIO_new(BIO_s_mem());
                        BIO_set_mem_eof_return(bio,0);
                }
+               if (bio == NULL)
+                       goto err;
 #endif
                }
        BIO_push(out,bio);
@@ -1080,8 +1089,13 @@ PKCS7_ISSUER_AND_SERIAL *PKCS7_get_issuer_and_serial(PKCS7 *p7, int idx)
        int i;
 
        i=OBJ_obj2nid(p7->type);
-       if (i != NID_pkcs7_signedAndEnveloped) return(NULL);
+       if (i != NID_pkcs7_signedAndEnveloped)
+               return NULL;
+       if (p7->d.signed_and_enveloped == NULL)
+               return NULL;
        rsk=p7->d.signed_and_enveloped->recipientinfo;
+       if (rsk == NULL)
+               return NULL;
        ri=sk_PKCS7_RECIP_INFO_value(rsk,0);
        if (sk_PKCS7_RECIP_INFO_num(rsk) <= idx) return(NULL);
        ri=sk_PKCS7_RECIP_INFO_value(rsk,idx);
@@ -1135,6 +1149,8 @@ int PKCS7_set_signed_attributes(PKCS7_SIGNER_INFO *p7si,
        if (p7si->auth_attr != NULL)
                sk_X509_ATTRIBUTE_pop_free(p7si->auth_attr,X509_ATTRIBUTE_free);
        p7si->auth_attr=sk_X509_ATTRIBUTE_dup(sk);
+       if (p7si->auth_attr == NULL)
+               return 0;
        for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
                {
                if ((sk_X509_ATTRIBUTE_set(p7si->auth_attr,i,
@@ -1153,6 +1169,8 @@ int PKCS7_set_attributes(PKCS7_SIGNER_INFO *p7si, STACK_OF(X509_ATTRIBUTE) *sk)
                sk_X509_ATTRIBUTE_pop_free(p7si->unauth_attr,
                                           X509_ATTRIBUTE_free);
        p7si->unauth_attr=sk_X509_ATTRIBUTE_dup(sk);
+       if (p7si->unauth_attr == NULL)
+               return 0;
        for (i=0; i<sk_X509_ATTRIBUTE_num(sk); i++)
                {
                if ((sk_X509_ATTRIBUTE_set(p7si->unauth_attr,i,
@@ -1183,9 +1201,16 @@ static int add_attribute(STACK_OF(X509_ATTRIBUTE) **sk, int nid, int atrtype,
        if (*sk == NULL)
                {
                *sk = sk_X509_ATTRIBUTE_new_null();
+               if (*sk == NULL)
+                       return 0;       
 new_attrib:
-               attr=X509_ATTRIBUTE_create(nid,atrtype,value);
-               sk_X509_ATTRIBUTE_push(*sk,attr);
+               if (!(attr=X509_ATTRIBUTE_create(nid,atrtype,value)))
+                       return 0;
+               if (!sk_X509_ATTRIBUTE_push(*sk,attr))
+                       {
+                       X509_ATTRIBUTE_free(attr);
+                       return 0;
+                       }
                }
        else
                {
@@ -1198,7 +1223,13 @@ new_attrib:
                                {
                                X509_ATTRIBUTE_free(attr);
                                attr=X509_ATTRIBUTE_create(nid,atrtype,value);
-                               sk_X509_ATTRIBUTE_set(*sk,i,attr);
+                               if (attr == NULL)
+                                       return 0;
+                               if (!sk_X509_ATTRIBUTE_set(*sk,i,attr))
+                                       {
+                                       X509_ATTRIBUTE_free(attr);
+                                       return 0;
+                                       }
                                goto end;
                                }
                        }

diff --git a/crypto/pkcs7/pk7_lib.c b/crypto/pkcs7/pk7_lib.c
index 8942ae8a53b3e964e19468386f4b09f79a6a485d..dd321c503abb7b563510717f78276538f2323cfd 100644 (file)
--- a/crypto/pkcs7/pk7_lib.c
+++ b/crypto/pkcs7/pk7_lib.c
@@ -272,16 +272,23 @@ int PKCS7_add_signer(PKCS7 *p7, PKCS7_SIGNER_INFO *psi)
        if (!j) /* we need to add another algorithm */
                {
                if(!(alg=X509_ALGOR_new())
-                       || !(alg->parameter = ASN1_TYPE_new())) {
+                       || !(alg->parameter = ASN1_TYPE_new()))
+                       {
+                       X509_ALGOR_free(alg);
                        PKCS7err(PKCS7_F_PKCS7_ADD_SIGNER,ERR_R_MALLOC_FAILURE);
                        return(0);
-               }
+                       }
                alg->algorithm=OBJ_nid2obj(nid);
                alg->parameter->type = V_ASN1_NULL;
-               sk_X509_ALGOR_push(md_sk,alg);
+               if (!sk_X509_ALGOR_push(md_sk,alg))
+                       {
+                       X509_ALGOR_free(alg);
+                       return 0;
+                       }
                }
 
-       sk_PKCS7_SIGNER_INFO_push(signer_sk,psi);
+       if (!sk_PKCS7_SIGNER_INFO_push(signer_sk,psi))
+               return 0;
        return(1);
        }
 
@@ -306,8 +313,17 @@ int PKCS7_add_certificate(PKCS7 *p7, X509 *x509)
 
        if (*sk == NULL)
                *sk=sk_X509_new_null();
+       if (*sk == NULL)
+               {
+               PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE, ERR_R_MALLOC_FAILURE);
+               return 0;
+               }
        CRYPTO_add(&x509->references,1,CRYPTO_LOCK_X509);
-       sk_X509_push(*sk,x509);
+       if (!sk_X509_push(*sk,x509))
+               {
+               X509_free(x509);
+               return 0;
+               }
        return(1);
        }
 
@@ -332,9 +348,18 @@ int PKCS7_add_crl(PKCS7 *p7, X509_CRL *crl)
 
        if (*sk == NULL)
                *sk=sk_X509_CRL_new_null();
+       if (*sk == NULL)
+               {
+               PKCS7err(PKCS7_F_PKCS7_ADD_CERTIFICATE,ERR_R_MALLOC_FAILURE);
+               return 0;
+               }
 
        CRYPTO_add(&crl->references,1,CRYPTO_LOCK_X509_CRL);
-       sk_X509_CRL_push(*sk,crl);
+       if (!sk_X509_CRL_push(*sk,crl))
+               {
+               X509_CRL_free(crl);
+               return 0;
+               }
        return(1);
        }
 
@@ -496,7 +521,8 @@ int PKCS7_add_recipient_info(PKCS7 *p7, PKCS7_RECIP_INFO *ri)
                return(0);
                }
 
-       sk_PKCS7_RECIP_INFO_push(sk,ri);
+       if (!sk_PKCS7_RECIP_INFO_push(sk,ri))
+               return 0;
        return(1);
        }
 

diff --git a/crypto/pkcs7/pk7_smime.c b/crypto/pkcs7/pk7_smime.c
index 8952e3989e9dd7e27526d763109997a19a6c73e3..5c2e3b6f92b4523efc5e5a187f8e5c8332b3ffc6 100644 (file)
--- a/crypto/pkcs7/pk7_smime.c
+++ b/crypto/pkcs7/pk7_smime.c
@@ -378,7 +378,8 @@ int PKCS7_verify(PKCS7 *p7, STACK_OF(X509) *certs, X509_STORE *store,
                tmpin = indata;
                
 
-       p7bio=PKCS7_dataInit(p7,tmpin);
+       if (!(p7bio=PKCS7_dataInit(p7,tmpin)))
+               goto err;
 
        if(flags & PKCS7_TEXT) {
                if(!(tmpout = BIO_new(BIO_s_mem()))) {
@@ -483,7 +484,10 @@ STACK_OF(X509) *PKCS7_get0_signers(PKCS7 *p7, STACK_OF(X509) *certs, int flags)
                        return 0;
            }
 
-           sk_X509_push(signers, signer);
+           if (!sk_X509_push(signers, signer)) {
+               sk_X509_free(signers);
+               return NULL;
+           }
        }
        return signers;
 }
@@ -503,8 +507,9 @@ PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher,
                return NULL;
        }
 
-       PKCS7_set_type(p7, NID_pkcs7_enveloped);
-       if(!PKCS7_set_cipher(p7, cipher)) {
+       if (!PKCS7_set_type(p7, NID_pkcs7_enveloped))
+               goto err;
+       if (!PKCS7_set_cipher(p7, cipher)) {
                PKCS7err(PKCS7_F_PKCS7_ENCRYPT,PKCS7_R_ERROR_SETTING_CIPHER);
                goto err;
        }
@@ -526,7 +531,7 @@ PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher,
 
        err:
 
-       BIO_free(p7bio);
+       BIO_free_all(p7bio);
        PKCS7_free(p7);
        return NULL;
 
@@ -564,10 +569,13 @@ int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags)
                /* Encrypt BIOs can't do BIO_gets() so add a buffer BIO */
                if(!(tmpbuf = BIO_new(BIO_f_buffer()))) {
                        PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+                       BIO_free_all(tmpmem);
                        return 0;
                }
                if(!(bread = BIO_push(tmpbuf, tmpmem))) {
                        PKCS7err(PKCS7_F_PKCS7_DECRYPT, ERR_R_MALLOC_FAILURE);
+                       BIO_free_all(tmpbuf);
+                       BIO_free_all(tmpmem);
                        return 0;
                }
                ret = SMIME_text(bread, data);