NVD Vulnerability Detail

CVE-2020-14386

Summary	A flaw was found in the Linux kernel before 5.9-rc4. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity.
Publication Date	Sept. 16, 2020, 10:15 p.m.
Registration Date	Jan. 26, 2021, 11:52 a.m.
Last Update	Nov. 21, 2024, 2:03 p.m.

CVSS3.1 : HIGH
スコア	7.8
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV)	ローカル
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	低
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	7.2
Vector	AV:L/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV)	ローカル
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:o:linux:linux_kernel:5.9.0:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.9.0:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.9.0:rc3::::::
cpe:2.3:o:linux:linux_kernel::::::::	4.6			4.9.239
cpe:2.3:o:linux:linux_kernel::::::::	4.10			4.14.201
cpe:2.3:o:linux:linux_kernel::::::::	4.15			4.19.150
cpe:2.3:o:linux:linux_kernel::::::::	4.20			5.4.64
cpe:2.3:o:linux:linux_kernel::::::::	5.5			5.8.8

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:9.0:::::::*

Configuration3		or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:33:::::::*

Configuration4		or higher	or less	more than	less than
cpe:2.3:o:opensuse:leap:15.1:::::::*

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html	Mailing List Third Party Advisory
2	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html	Mailing List Third Party Advisory
3	http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html	Third Party Advisory VDB Entry
4	http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html	Third Party Advisory VDB Entry
5	http://www.openwall.com/lists/oss-security/2021/09/17/2	Mailing List Third Party Advisory
6	http://www.openwall.com/lists/oss-security/2021/09/17/2	Mailing List Third Party Advisory
7	http://www.openwall.com/lists/oss-security/2021/09/17/4	Mailing List Third Party Advisory
8	http://www.openwall.com/lists/oss-security/2021/09/17/4	Mailing List Third Party Advisory
9	http://www.openwall.com/lists/oss-security/2021/09/21/1	Mailing List Third Party Advisory
10	http://www.openwall.com/lists/oss-security/2021/09/21/1	Mailing List Third Party Advisory
11	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14386	Issue Tracking Patch Third Party Advisory
12	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14386	Issue Tracking Patch Third Party Advisory
13	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=acf69c946233259ab4d64f8869d4037a198c7f06	Patch Vendor Advisory
14	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=acf69c946233259ab4d64f8869d4037a198c7f06	Patch Vendor Advisory
15	https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html	Mailing List Third Party Advisory
16	https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html	Mailing List Third Party Advisory
17	https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html	Mailing List Third Party Advisory
18	https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html	Mailing List Third Party Advisory
19	https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html	Mailing List Third Party Advisory
20	https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html	Mailing List Third Party Advisory
21	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNCPXERMUHPSGF6S2VVFL5NVVPBBFB63/
22	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNCPXERMUHPSGF6S2VVFL5NVVPBBFB63/
23	https://seclists.org/oss-sec/2020/q3/146	Mailing List Patch Third Party Advisory
24	https://seclists.org/oss-sec/2020/q3/146	Mailing List Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-787	境界外書き込み	https://cwe.mitre.org/data/definitions/787.html

JVN Vulnerability Information

Linux Kernel における境界外書き込みに関する脆弱性

Title	Linux Kernel における境界外書き込みに関する脆弱性
Summary	Linux Kernel には、境界外書き込みに関する脆弱性が存在します。
Possible impacts	情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態に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. 4, 2020, midnight
Registration Date	March 26, 2021, 3:34 p.m.
Last Update	March 26, 2021, 3:34 p.m.

Affected System

Linux

Linux Kernel 5.9-rc4 未満

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-2020-14386	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14386
National Vulnerability Database (NVD)
2	CVE-2020-14386	https://nvd.nist.gov/vuln/detail/CVE-2020-14386

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-787	https://cwe.mitre.org/data/definitions/787.html

ベンダー情報

No	Name	URL
Linux Kernel
1	Linux Kernel Archives	http://www.kernel.org
Linux kernel source tree
2	net/packet: fix overflow in tpacket_rcv	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=acf69c946233259ab4d64f8869d4037a198c7f06

Change Log

No	Changed Details	Date of change
1	[2021年03月26日] 掲載	March 26, 2021, 3:34 p.m.