From nobody Sat May 4 20:38:55 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; envelope-from=libvir-list-bounces@redhat.com; helo=mx1.redhat.com; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; dmarc=pass(p=none dis=none) header.from=redhat.com Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mx.zohomail.com with SMTPS id 1551192401449211.95134017808527; Tue, 26 Feb 2019 06:46:41 -0800 (PST) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B7FD8307D963; Tue, 26 Feb 2019 14:46:39 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7F4215F9A9; Tue, 26 Feb 2019 14:46:39 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 249B6181A00A; Tue, 26 Feb 2019 14:46:39 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id x1QEkbuZ003857 for ; Tue, 26 Feb 2019 09:46:37 -0500 Received: by smtp.corp.redhat.com (Postfix) id 8CA1A5D723; Tue, 26 Feb 2019 14:46:37 +0000 (UTC) Received: from angien.brq.redhat.com (unknown [10.43.2.229]) by smtp.corp.redhat.com (Postfix) with ESMTP id DB5885D721; Tue, 26 Feb 2019 14:46:34 +0000 (UTC) From: Peter Krempa To: libvir-list@redhat.com Date: Tue, 26 Feb 2019 15:46:32 +0100 Message-Id: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-loop: libvir-list@redhat.com Cc: Peter Krempa Subject: [libvirt] [PATCH] util: json: Nuke strings when freeing JSON objects X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Tue, 26 Feb 2019 14:46:40 +0000 (UTC) Content-Type: text/plain; charset="utf-8" We construct JSON objects e.g. for setting the VNC password but then just VIR_FREE the strings cointained inside. If it was the password string would be kept on the heap. Exchange some cpu cycles for a warm feeling of security. Signed-off-by: Peter Krempa --- src/util/virjson.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virjson.c b/src/util/virjson.c index d5d66f879f..db38fd0dc0 100644 --- a/src/util/virjson.c +++ b/src/util/virjson.c @@ -423,7 +423,7 @@ virJSONValueFree(virJSONValuePtr value) VIR_FREE(value->data.array.values); break; case VIR_JSON_TYPE_STRING: - VIR_FREE(value->data.string); + VIR_DISPOSE_STRING(value->data.string); break; case VIR_JSON_TYPE_NUMBER: VIR_FREE(value->data.number); --=20 2.20.1 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list