diff --git a/src/libpts/tcg/tcg_pts_attr_dh_nonce_finish.c b/src/libpts/tcg/tcg_pts_attr_dh_nonce_finish.c
index 945a426fc..3a40df05a 100644
--- a/src/libpts/tcg/tcg_pts_attr_dh_nonce_finish.c
+++ b/src/libpts/tcg/tcg_pts_attr_dh_nonce_finish.c
@@ -158,7 +158,9 @@ METHOD(pa_tnc_attr_t, process, status_t,
 	this->hash_algo = hash_algo;
 	reader->read_data(reader, reader->remaining(reader) - this->nonce_len,
 										&this->initiator_pub_val);
+	this->initiator_pub_val = chunk_clone(this->initiator_pub_val);
 	reader->read_data(reader, this->nonce_len, &this->initiator_nonce);
+	this->initiator_nonce = chunk_clone(this->initiator_nonce);
 	
 	reader->destroy(reader);
 
diff --git a/src/libpts/tcg/tcg_pts_attr_dh_nonce_params_resp.c b/src/libpts/tcg/tcg_pts_attr_dh_nonce_params_resp.c
index 92d9cd740..d9954c29b 100644
--- a/src/libpts/tcg/tcg_pts_attr_dh_nonce_params_resp.c
+++ b/src/libpts/tcg/tcg_pts_attr_dh_nonce_params_resp.c
@@ -168,7 +168,9 @@ METHOD(pa_tnc_attr_t, process, status_t,
 	reader->read_uint16(reader, &hash_algo_set);
 	this->hash_algo_set = hash_algo_set;
 	reader->read_data(reader, this->nonce_len, &this->responder_nonce);
+	this->responder_nonce = chunk_clone(this->responder_nonce);
 	reader->read_data(reader, reader->remaining(reader), &this->responder_pub_val);
+	this->responder_pub_val = chunk_clone(this->responder_pub_val);
 	reader->destroy(reader);
 
 	return SUCCESS;