From: "Wang, Jian J" <jian.j.wang@intel.com>
To: devel@edk2.groups.io
Cc: Laszlo Ersek <lersek@redhat.com>,
Jiewen Yao <jiewen.yao@intel.com>,
Chao Zhang <chao.b.zhang@intel.com>
Subject: [PATCH 8/9] SecurityPkg/DxeImageVerificationLib: plug Data leak in IsForbiddenByDbx()(CVE-2019-14575)
Date: Thu, 6 Feb 2020 22:19:32 +0800 [thread overview]
Message-ID: <20200206141933.356-9-jian.j.wang@intel.com> (raw)
In-Reply-To: <20200206141933.356-1-jian.j.wang@intel.com>
From: Laszlo Ersek <lersek@redhat.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1608
If the second GetVariable() call for "dbx" fails, in IsForbiddenByDbx(),
we have to free Data. Jump to "Done" for that.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
.../Library/DxeImageVerificationLib/DxeImageVerificationLib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c
index 2236ce98ce..5b7a67f811 100644
--- a/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c
+++ b/SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.c
@@ -1274,7 +1274,7 @@ IsForbiddenByDbx (
Status = gRT->GetVariable (EFI_IMAGE_SECURITY_DATABASE1, &gEfiImageSecurityDatabaseGuid, NULL, &DataSize, (VOID *) Data);
if (EFI_ERROR (Status)) {
- return IsForbidden;
+ goto Done;
}
//
--
2.24.0.windows.2
next prev parent reply other threads:[~2020-02-06 14:19 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-06 14:19 [PATCH 0/9] Fix false negative issue in DxeImageVerificationHandler Wang, Jian J
2020-02-06 14:19 ` [PATCH 1/9] SecurityPkg/DxeImageVerificationLib: Fix memory leaks(CVE-2019-14575) Wang, Jian J
2020-02-13 9:34 ` Yao, Jiewen
2020-02-13 16:43 ` [edk2-devel] " Philippe Mathieu-Daudé
2020-02-06 14:19 ` [PATCH 2/9] SecurityPkg/DxeImageVerificationLib: reject CertStack.CertNumber==0 per DBX(CVE-2019-14575) Wang, Jian J
2020-02-13 9:36 ` Yao, Jiewen
2020-02-06 14:19 ` [PATCH 3/9] SecurityPkg/DxeImageVerificationLib: fix wrong fetching dbx in IsAllowedByDb(CVE-2019-14575) Wang, Jian J
2020-02-13 9:38 ` Yao, Jiewen
2020-02-06 14:19 ` [PATCH 4/9] SecurityPkg/DxeImageVerificationLib: avoid bypass in " Wang, Jian J
2020-02-13 9:39 ` Yao, Jiewen
2020-02-06 14:19 ` [PATCH 5/9] SecurityPkg/DxeImageVerificationLib: refactor db/dbx fetching code " Wang, Jian J
2020-02-13 9:44 ` Yao, Jiewen
2020-02-06 14:19 ` [PATCH 6/9] SecurityPkg/DxeImageVerificationLib: Differentiate error and search result in IsCertHashFoundInDatabase(CVE-2019-14575) Wang, Jian J
2020-02-13 10:11 ` Yao, Jiewen
2020-02-13 15:07 ` Wang, Jian J
2020-02-14 0:54 ` Yao, Jiewen
2020-02-14 3:31 ` Wang, Jian J
2020-02-14 3:33 ` Yao, Jiewen
2020-02-06 14:19 ` [PATCH 7/9] SecurityPkg/DxeImageVerificationLib: tighten default result of IsForbiddenByDbx()(CVE-2019-14575) Wang, Jian J
2020-02-13 10:13 ` Yao, Jiewen
2020-02-06 14:19 ` Wang, Jian J [this message]
2020-02-13 10:14 ` [PATCH 8/9] SecurityPkg/DxeImageVerificationLib: plug Data leak in IsForbiddenByDbx()(CVE-2019-14575) Yao, Jiewen
2020-02-13 16:56 ` [edk2-devel] " Philippe Mathieu-Daudé
2020-02-06 14:19 ` [PATCH 9/9] SecurityPkg/DxeImageVerificationLib: Differentiate error and search result in IsSignatureFoundInDatabase(CVE-2019-14575) Wang, Jian J
2020-02-13 9:02 ` [edk2-devel] " Zhang, Chao B
2020-02-13 10:20 ` Yao, Jiewen
2020-02-13 1:53 ` [edk2-devel] [PATCH 0/9] Fix false negative issue in DxeImageVerificationHandler Liming Gao
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