From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga04.intel.com (mga04.intel.com []) by mx.groups.io with SMTP id smtpd.web11.3343.1581665266656025367 for ; Thu, 13 Feb 2020 23:27:54 -0800 Authentication-Results: mx.groups.io; dkim=missing; spf=fail (domain: intel.com, ip: , mailfrom: jian.j.wang@intel.com) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Feb 2020 23:27:54 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,439,1574150400"; d="scan'208";a="347904235" Received: from shwdeopensfp777.ccr.corp.intel.com ([10.239.158.78]) by fmsmga001.fm.intel.com with ESMTP; 13 Feb 2020 23:27:53 -0800 From: "Wang, Jian J" To: devel@edk2.groups.io Cc: Laszlo Ersek , Jiewen Yao , Chao Zhang Subject: [PATCH v2 08/10] SecurityPkg/DxeImageVerificationLib: plug Data leak in IsForbiddenByDbx()(CVE-2019-14575) Date: Fri, 14 Feb 2020 15:27:43 +0800 Message-Id: <20200214072745.1570-9-jian.j.wang@intel.com> X-Mailer: git-send-email 2.24.0.windows.2 In-Reply-To: <20200214072745.1570-1-jian.j.wang@intel.com> References: <20200214072745.1570-1-jian.j.wang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable From: Laszlo Ersek REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3D1608 If the second GetVariable() call for "dbx" fails, in IsForbiddenByDbx(), we have to free Data. Jump to "Done" for that. Cc: Jiewen Yao Cc: Chao Zhang Signed-off-by: Laszlo Ersek Reviewed-by: Jiewen Yao --- .../Library/DxeImageVerificationLib/DxeImageVerificationLib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificati= onLib.c b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationL= ib.c index 470a0d20ef..f20640af68 100644 --- a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c +++ b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c @@ -1274,7 +1274,7 @@ IsForbiddenByDbx ( =0D Status =3D gRT->GetVariable (EFI_IMAGE_SECURITY_DATABASE1, &gEfiImageSec= urityDatabaseGuid, NULL, &DataSize, (VOID *) Data);=0D if (EFI_ERROR (Status)) {=0D - return IsForbidden;=0D + goto Done;=0D }=0D =0D //=0D --=20 2.24.0.windows.2