CVE-2019-15809

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.

• CWE-203

• http://www.openwall.com/lists/oss-security/2019/10/02/2Mailing List, Third Party Advisory
• https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214Third Party Advisory, US Government Resource
• https://eprint.iacr.org/2011/232.pdfTechnical Description, Third Party Advisory
• https://minerva.crocs.fi.muni.cz/Exploit, Third Party Advisory
• https://tches.iacr.org/index.php/TCHES/article/view/7337Technical Description, Third Party Advisory
• https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/Product
• http://www.openwall.com/lists/oss-security/2019/10/02/2Mailing List, Third Party Advisory
• https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214Third Party Advisory, US Government Resource
• https://eprint.iacr.org/2011/232.pdfTechnical Description, Third Party Advisory
• https://minerva.crocs.fi.muni.cz/Exploit, Third Party Advisory
• https://tches.iacr.org/index.php/TCHES/article/view/7337Technical Description, Third Party Advisory
• https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/Product

Published

Oct 3, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-15802An issue was discovered on Zyxel GS1900 devices with firmwar…5.9
• CVE-2019-15803An issue was discovered on Zyxel GS1900 devices with firmwar…9.1
• CVE-2019-15804An issue was discovered on Zyxel GS1900 devices with firmwar…7.5
• CVE-2019-15805CommScope ARRIS TR4400 devices with firmware through A1.00.0…
• CVE-2019-15806CommScope ARRIS TR4400 devices with firmware through A1.00.0…
• CVE-2019-15807In the Linux kernel before 5.1.13, there is a memory leak in…4.7
• CVE-2019-1581A remote code execution vulnerability in the PAN-OS SSH devi…9.8
• CVE-2019-15810Insufficient sanitization during device search in Netdisco 2…6.1
• CVE-2019-15811In DomainMOD through 4.13, the parameter daterange in the fi…
• CVE-2019-15813Multiple file upload restriction bypass vulnerabilities in S…8.8
• CVE-2019-15814Multiple stored XSS vulnerabilities in Sentrifugo 3.2 could …
• CVE-2019-15815ZyXEL P-1302-T10D v3 devices with firmware version 2.00(ABBX…6.5