NVD Vulnerability Detail

CVE-2015-7511

Summary	Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.
Publication Date	April 20, 2016, 6:59 a.m.
Registration Date	Jan. 26, 2021, 2:56 p.m.
Last Update	Nov. 21, 2024, 11:36 a.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:gnupg:libgcrypt::::::::			1.6.4

Configuration3	or higher	or less	more than	less than
cpe:2.3:o:canonical:ubuntu_linux:12.04::::lts:::
cpe:2.3:o:canonical:ubuntu_linux:15.10:::::::*
cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
2	http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
3	http://www.cs.tau.ac.IL/~tromer/ecdh/
4	http://www.cs.tau.ac.IL/~tromer/ecdh/
5	http://www.debian.org/security/2016/dsa-3474
6	http://www.debian.org/security/2016/dsa-3474
7	http://www.debian.org/security/2016/dsa-3478
8	http://www.debian.org/security/2016/dsa-3478
9	http://www.securityfocus.com/bid/83253
10	http://www.securityfocus.com/bid/83253
11	http://www.ubuntu.com/usn/USN-2896-1
12	http://www.ubuntu.com/usn/USN-2896-1
13	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
14	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
15	https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html	Vendor Advisory
16	https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html	Vendor Advisory
17	https://security.gentoo.org/glsa/201610-04
18	https://security.gentoo.org/glsa/201610-04

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-200	情報漏えい	https://cwe.mitre.org/data/definitions/200.html

JVN Vulnerability Information

Libgcrypt における楕円曲線ディフィー・ヘルマン鍵を抽出される脆弱性

Title	Libgcrypt における楕円曲線ディフィー・ヘルマン鍵を抽出される脆弱性
Summary	Libgcrypt は、復号の際に楕円点 (elliptic-point) 曲線の乗算を適切に実行しないため、楕円曲線ディフィー・ヘルマン (ECDH) 鍵を抽出される脆弱性が存在します。
Possible impacts	物理的に端末の操作が可能な攻撃者により、電磁気放射を測定されることで、楕円曲線ディフィー・ヘルマン (ECDH) 鍵を抽出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. 29, 2015, midnight
Registration Date	April 27, 2016, 10:56 a.m.
Last Update	April 27, 2016, 10:56 a.m.

Affected System

GNU Project

Libgcrypt 1.6.5 未満

Debian

Debian GNU/Linux 7.0

Debian GNU/Linux 8.0

Canonical

Ubuntu 12.04 LTS

Ubuntu 14.04 LTS

Ubuntu 15.10

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-2015-7511	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7511
National Vulnerability Database (NVD)
2	CVE-2015-7511	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-7511

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
Debian Security Advisory
1	DSA-3474	https://www.debian.org/security/2016/dsa-3474
2	DSA-3478	https://www.debian.org/security/2016/dsa-3478
GnuPG Announce
3	Libgcrypt 1.6.5 with security fix released	https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html
Ubuntu Security Notice
4	USN-2896-1	http://www.ubuntu.com/usn/USN-2896-1/

その他

No	Name	URL
関連文書
1	ECDH Key-Extraction via Low-Bandwidth Electromagnetic Attacks on PCs	http://www.cs.tau.ac.il/~tromer/ecdh/

Change Log

No	Changed Details	Date of change
0	[2016年04月27日] 掲載	Feb. 17, 2018, 10:37 a.m.