NVD Vulnerability Detail

CVE-2018-8421

Summary	A remote code execution vulnerability exists when Microsoft .NET Framework processes untrusted input, aka ".NET Framework Remote Code Execution Vulnerability." This affects Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1/4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 4.7.2, Microsoft .NET Framework 2.0.
Publication Date	Sept. 13, 2018, 9:29 a.m.
Registration Date	March 1, 2021, 7:41 p.m.
Last Update	Nov. 21, 2024, 1:13 p.m.

CVSS3.0 : CRITICAL
スコア	9.8
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	高
完全性への影響(I)	高
可用性への影響(A)	高

CVSS2.0 : HIGH
Score	10.0
Vector	AV:N/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	高
完全性への影響(I)	高
可用性への影響(A)	高
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:2.0:sp2::::::
cpe:2.3:a:microsoft:.net_framework:3.0:sp2::::::
execution environment
1	cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:-:::::::*
2	cpe:2.3:o:microsoft:windows_10:1607:::::::*
3	cpe:2.3:o:microsoft:windows_10:1703:::::::*
4	cpe:2.3:o:microsoft:windows_10:1709:::::::*
5	cpe:2.3:o:microsoft:windows_10:1803:::::::*
6	cpe:2.3:o:microsoft:windows_8.1::::::::
7	cpe:2.3:o:microsoft:windows_server_2012::::::::
8	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
9	cpe:2.3:o:microsoft:windows_server_2016::::::::

Configuration3		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:3.5.1:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::

Configuration4		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
5	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
6	cpe:2.3:o:microsoft:windows_server_2012::::::::
7	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration5		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
5	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
6	cpe:2.3:o:microsoft:windows_server_2012::::::::
7	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration6		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.6:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*

Configuration7		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:1607:::::::*
2	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*

Configuration8		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.6:::::::*
cpe:2.3:a:microsoft:.net_framework:4.6.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
5	cpe:2.3:o:microsoft:windows_server_2012::::::::
6	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration9		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:1709:::::::*
2	cpe:2.3:o:microsoft:windows_server:1709:::::::*

Configuration10		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:1803:::::::*
2	cpe:2.3:o:microsoft:windows_server:1803:::::::*

Configuration11		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:1703:::::::*

Related information, measures and tools

No	URL	タグ
1	http://www.securityfocus.com/bid/105222	Third Party Advisory VDB Entry
2	http://www.securityfocus.com/bid/105222	Third Party Advisory VDB Entry
3	http://www.securitytracker.com/id/1041636	Third Party Advisory VDB Entry
4	http://www.securitytracker.com/id/1041636	Third Party Advisory VDB Entry
5	https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421	Patch Vendor Advisory
6	https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8421	Patch Vendor Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-20	不適切な入力確認	https://cwe.mitre.org/data/definitions/20.html

JVN Vulnerability Information

Microsoft .NET Framework におけるリモートでコードを実行される脆弱性

Title	Microsoft .NET Framework におけるリモートでコードを実行される脆弱性
Summary	Microsoft .NET Framework には、信頼性のない入力を処理する場合、リモートでコードを実行される脆弱性が存在します。ベンダは、本脆弱性を「.NET Framework のリモートでコードが実行される脆弱性」として公開しています。
Possible impacts	リモートでコードを実行される可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Sept. 11, 2018, midnight
Registration Date	Nov. 6, 2018, 4:33 p.m.
Last Update	Nov. 6, 2018, 4:33 p.m.

Affected System

マイクロソフト

Microsoft .NET Framework 2.0 SP2

Microsoft .NET Framework 3.0 SP2

Microsoft .NET Framework 3.5

Microsoft .NET Framework 3.5.1

Microsoft .NET Framework 4.5.2

Microsoft .NET Framework 4.6

Microsoft .NET Framework 4.6.1

Microsoft .NET Framework 4.6.2

Microsoft .NET Framework 4.7

Microsoft .NET Framework 4.7.1

Microsoft .NET Framework 4.7.2

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2018-8421	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8421
National Vulnerability Database (NVD)
2	CVE-2018-8421	https://nvd.nist.gov/vuln/detail/CVE-2018-8421
Security Update Guide
3	CVE-2018-8421 \| .NET Framework Remote Code Execution Vulnerability	https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2018-8421
セキュリティ更新プログラムガイド
4	CVE-2018-8421 \| .NET Framework のリモートでコードが実行される脆弱性	https://portal.msrc.microsoft.com/ja-jp/security-guidance/advisory/CVE-2018-8421

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-20	https://jvndb.jvn.jp/ja/cwe/CWE-20.html

その他

No	Name	URL
IPA 重要なセキュリティ情報
1	Microsoft 製品の脆弱性対策について(2018年9月)	https://www.ipa.go.jp/security/ciadr/vul/20180912-ms.html
JPCERT 注意喚起
2	JPCERT-AT-2018-0038	http://www.jpcert.or.jp/at/2018/at180038.html

Change Log

No	Changed Details	Date of change
1	[2018年11月06日] 掲載	Nov. 6, 2018, 4:33 p.m.

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_10:-:::::::*
2	cpe:2.3:o:microsoft:windows_10:1607:::::::*
3	cpe:2.3:o:microsoft:windows_10:1703:::::::*
4	cpe:2.3:o:microsoft:windows_10:1709:::::::*
5	cpe:2.3:o:microsoft:windows_10:1803:::::::*
6	cpe:2.3:o:microsoft:windows_8.1::::::::
7	cpe:2.3:o:microsoft:windows_server_2012::::::::
8	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
9	cpe:2.3:o:microsoft:windows_server_2016::::::::

Configuration4		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
5	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
6	cpe:2.3:o:microsoft:windows_server_2012::::::::
7	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration5		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.5.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008::sp2::::::*
5	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
6	cpe:2.3:o:microsoft:windows_server_2012::::::::
7	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*

Configuration8		or higher	or less	more than	less than
cpe:2.3:a:microsoft:.net_framework:4.6:::::::*
cpe:2.3:a:microsoft:.net_framework:4.6.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.6.2:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.1:::::::*
cpe:2.3:a:microsoft:.net_framework:4.7.2:::::::*
execution environment
1	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
2	cpe:2.3:o:microsoft:windows_8.1::::::::
3	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
4	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1::::::
5	cpe:2.3:o:microsoft:windows_server_2012::::::::
6	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*