NVD Vulnerability Detail

CVE-2019-15809

Summary	Smart cards from the Athena SCS manufacturer, based on the Atmel Toolbox 00.03.11.05 and the AT90SC chip, contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because the Atmel Toolbox 00.03.11.05 contains two versions of ECDSA signature functions, described as fast and secure, but the affected cards chose to use the fast version, which leaks the bit length of the random nonce via timing. This affects Athena IDProtect 010b.0352.0005, Athena IDProtect 010e.1245.0002, Athena IDProtect 0106.0130.0401, Athena IDProtect 010e.1245.0002, Valid S/A IDflex V 010b.0352.0005, SafeNet eToken 4300 010e.1245.0002, TecSec Armored Card 010e.0264.0001, and TecSec Armored Card 108.0264.0001.
Publication Date	Oct. 3, 2019, 11:15 p.m.
Registration Date	Jan. 26, 2021, 11:39 a.m.
Last Update	Nov. 21, 2024, 1:29 p.m.

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:microchip:atmel_toolbox:00.03.11.05:::::::*

Related information, measures and tools

No	URL	タグ
1	http://www.openwall.com/lists/oss-security/2019/10/02/2	Mailing List Third Party Advisory
2	http://www.openwall.com/lists/oss-security/2019/10/02/2	Mailing List Third Party Advisory
3	https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214	Third Party Advisory US Government Resource
4	https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214	Third Party Advisory US Government Resource
5	https://eprint.iacr.org/2011/232.pdf	Technical Description Third Party Advisory
6	https://eprint.iacr.org/2011/232.pdf	Technical Description Third Party Advisory
7	https://minerva.crocs.fi.muni.cz/	Exploit Third Party Advisory
8	https://minerva.crocs.fi.muni.cz/	Exploit Third Party Advisory
9	https://tches.iacr.org/index.php/TCHES/article/view/7337	Technical Description Third Party Advisory
10	https://tches.iacr.org/index.php/TCHES/article/view/7337	Technical Description Third Party Advisory
11	https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/	Product
12	https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/	Product

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-203	セキュリティ関連の処理に対するレスポンスの違いに起因する情報漏えい	https://cwe.mitre.org/data/definitions/203.html

JVN Vulnerability Information

Athena SCS スマートカードにおける競合状態に関する脆弱性

Title	Athena SCS スマートカードにおける競合状態に関する脆弱性
Summary	Athena SCS スマートカードには、競合状態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	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	Oct. 2, 2019, midnight
Registration Date	Nov. 12, 2019, 10:06 a.m.
Last Update	Nov. 12, 2019, 10:06 a.m.

Affected System

microchip

Toolbox 00.03.11.05

Athena SCS Limited.

IDProtect 0106.0130.0401

IDProtect 010b.0352.0005

IDProtect 010e.1245.0002

Cryptsoft

Valid S/A Idflex V 010b.0352.0005

TecSec

Armored Card 010e.0264.0001

Armored Card 108.0264.0001

Thales Group

eToken 4300 010e.1245.0002

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-2019-15809	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15809
National Vulnerability Database (NVD)
2	CVE-2019-15809	https://nvd.nist.gov/vuln/detail/CVE-2019-15809

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-362	https://jvndb.jvn.jp/ja/cwe/CWE-362.html

ベンダー情報

その他

No	Name	URL
関連文書
1	Cryptographic Algorithm Validation Program	https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214
2	Minerva: ECDSA key recovery from bit-length leakage	https://www.openwall.com/lists/oss-security/2019/10/02/2

Change Log

No	Changed Details	Date of change
1	[2019年11月12日] 掲載	Nov. 12, 2019, 10:06 a.m.