Check PKCS7 structures in PKCS#12 files are of type data.

crypto/pkcs12/p12_add.c

@@ -148,7 +148,11 @@ PKCS7 *PKCS12_pack_p7data(STACK_OF(PKCS12_SAFEBAG) *sk)
 /* Unpack SAFEBAGS from PKCS#7 data ContentInfo */
 STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_p7data(PKCS7 *p7)
 {
-	if(!PKCS7_type_is_data(p7)) return NULL;
+	if(!PKCS7_type_is_data(p7))
+		{
+		PKCS12err(PKCS12_F_PKCS12_UNPACK_P7DATA,PKCS12_R_CONTENT_TYPE_NOT_DATA);
+		return NULL;
+		}
 	return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS));
 }
 
@@ -211,5 +215,10 @@ int PKCS12_pack_authsafes(PKCS12 *p12, STACK_OF(PKCS7) *safes)
 
 STACK_OF(PKCS7) *PKCS12_unpack_authsafes(PKCS12 *p12)
 {
+	if (!PKCS7_type_is_data(p12->authsafes))
+		{
+		PKCS12err(PKCS12_F_PKCS12_UNPACK_AUTHSAFES,PKCS12_R_CONTENT_TYPE_NOT_DATA);
+		return NULL;
+		}
 	return ASN1_item_unpack(p12->authsafes->d.data, ASN1_ITEM_rptr(PKCS12_AUTHSAFES));
 }

crypto/pkcs12/p12_mutl.c

@@ -72,6 +72,12 @@ int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
 	unsigned char key[PKCS12_MAC_KEY_LENGTH], *salt;
 	int saltlen, iter;
 
+	if (!PKCS7_type_is_data(p12->authsafes))
+		{
+		PKCS12err(PKCS12_F_PKCS12_GEN_MAC,PKCS12_R_CONTENT_TYPE_NOT_DATA);
+		return 0;
+		}
+
 	salt = p12->mac->salt->data;
 	saltlen = p12->mac->salt->length;
 	if (!p12->mac->iter) iter = 1;

crypto/pkcs12/pk12err.c

@@ -94,6 +94,8 @@ static ERR_STRING_DATA PKCS12_str_functs[]=
 {ERR_FUNC(PKCS12_F_PKCS12_PBE_KEYIVGEN),	"PKCS12_PBE_keyivgen"},
 {ERR_FUNC(PKCS12_F_PKCS12_SETUP_MAC),	"PKCS12_setup_mac"},
 {ERR_FUNC(PKCS12_F_PKCS12_SET_MAC),	"PKCS12_set_mac"},
+{ERR_FUNC(PKCS12_F_PKCS12_UNPACK_AUTHSAFES),	"PKCS12_unpack_authsafes"},
+{ERR_FUNC(PKCS12_F_PKCS12_UNPACK_P7DATA),	"PKCS12_unpack_p7data"},
 {ERR_FUNC(PKCS12_F_PKCS12_VERIFY_MAC),	"PKCS12_verify_mac"},
 {ERR_FUNC(PKCS12_F_PKCS8_ADD_KEYUSAGE),	"PKCS8_add_keyusage"},
 {ERR_FUNC(PKCS12_F_PKCS8_ENCRYPT),	"PKCS8_encrypt"},
@@ -103,6 +105,7 @@ static ERR_STRING_DATA PKCS12_str_functs[]=
 static ERR_STRING_DATA PKCS12_str_reasons[]=
 	{
 {ERR_REASON(PKCS12_R_CANT_PACK_STRUCTURE),"cant pack structure"},
+{ERR_REASON(PKCS12_R_CONTENT_TYPE_NOT_DATA),"content type not data"},
 {ERR_REASON(PKCS12_R_DECODE_ERROR)       ,"decode error"},
 {ERR_REASON(PKCS12_R_ENCODE_ERROR)       ,"encode error"},
 {ERR_REASON(PKCS12_R_ENCRYPT_ERROR)      ,"encrypt error"},

crypto/pkcs12/pkcs12.h

@@ -297,12 +297,15 @@ void ERR_load_PKCS12_strings(void);
 #define PKCS12_F_PKCS12_PBE_KEYIVGEN			 120
 #define PKCS12_F_PKCS12_SETUP_MAC			 122
 #define PKCS12_F_PKCS12_SET_MAC				 123
+#define PKCS12_F_PKCS12_UNPACK_AUTHSAFES		 130
+#define PKCS12_F_PKCS12_UNPACK_P7DATA			 131
 #define PKCS12_F_PKCS12_VERIFY_MAC			 126
 #define PKCS12_F_PKCS8_ADD_KEYUSAGE			 124
 #define PKCS12_F_PKCS8_ENCRYPT				 125
 
 /* Reason codes. */
 #define PKCS12_R_CANT_PACK_STRUCTURE			 100
+#define PKCS12_R_CONTENT_TYPE_NOT_DATA			 121
 #define PKCS12_R_DECODE_ERROR				 101
 #define PKCS12_R_ENCODE_ERROR				 102
 #define PKCS12_R_ENCRYPT_ERROR				 103