NVD Vulnerability Detail

CVE-2020-11740

Summary	An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.
Publication Date	April 14, 2020, 10:15 p.m.
Registration Date	Jan. 26, 2021, 11:51 a.m.
Last Update	Nov. 21, 2024, 1:58 p.m.

CVSS3.1 : MEDIUM
スコア	5.5
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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)	なし
可用性への影響(A)	なし

CVSS2.0 : LOW
Score	2.1
Vector	AV:L/AC:L/Au:N/C:P/I:N/A:N
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)	低
完全性への影響(I)	なし
可用性への影響(A)	なし
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:xen:xen:4.13.0:rc1::::::
cpe:2.3:o:xen:xen:4.13.0:rc2::::::
cpe:2.3:o:xen:xen::::::::	3.2.0	4.13.0

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:10.0:::::::*

Configuration3	or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:30:::::::*
cpe:2.3:o:fedoraproject:fedora:31:::::::*
cpe:2.3:o:fedoraproject:fedora:32:::::::*

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/2020-05/msg00006.html	Mailing List Third Party Advisory
2	http://www.openwall.com/lists/oss-security/2020/04/14/1	Mailing List Patch Third Party Advisory
3	http://xenbits.xen.org/xsa/advisory-313.html	Patch Vendor Advisory
4	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/
5	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/
6	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/
7	https://security.gentoo.org/glsa/202005-08	Third Party Advisory
8	https://www.debian.org/security/2020/dsa-4723	Third Party Advisory
9	https://xenbits.xen.org/xsa/advisory-313.html	Patch Vendor Advisory
10	http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html	Mailing List Third Party Advisory
11	https://xenbits.xen.org/xsa/advisory-313.html	Patch Vendor Advisory
12	https://www.debian.org/security/2020/dsa-4723	Third Party Advisory
13	https://security.gentoo.org/glsa/202005-08	Third Party Advisory
14	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/
15	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/
16	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/
17	http://xenbits.xen.org/xsa/advisory-313.html	Patch Vendor Advisory
18	http://www.openwall.com/lists/oss-security/2020/04/14/1	Mailing List Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-212	保存または転送前の重要な情報の不適切な削除	https://cwe.mitre.org/data/definitions/212.html

JVN Vulnerability Information

Xen における情報漏えいに関する脆弱性

Title	Xen における情報漏えいに関する脆弱性
Summary	Xen には、情報漏えいに関する脆弱性が存在します。
Possible impacts	情報を取得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	April 14, 2020, midnight
Registration Date	May 12, 2020, 6 p.m.
Last Update	May 12, 2020, 6 p.m.

Affected System

Xen プロジェクト

Xen 4.13.x まで

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-2020-11740	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11740
National Vulnerability Database (NVD)
2	CVE-2020-11740	https://nvd.nist.gov/vuln/detail/CVE-2020-11740

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-200	https://jvndb.jvn.jp/ja/cwe/CWE-200.html

ベンダー情報

No	Name	URL
Xen Security Advisory
1	XSA-313	https://xenbits.xen.org/xsa/advisory-313.html

その他

No	Name	URL
関連文書
1	Xen Security Advisory 313 v3 (CVE-2020-11740,CVE-2020-11741) - multiple xenoprof issues	https://www.openwall.com/lists/oss-security/2020/04/14/1

Change Log

No	Changed Details	Date of change
1	[2020年05月12日] 掲載	May 12, 2020, 6 p.m.