4.7
MEDIUM
CVE-2019-15809
Athena SCS and SafeNet: ECDSA Timing Side Channel Vulnerability
Description

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.

INFO

Published Date :

Oct. 3, 2019, 2:15 p.m.

Last Modified :

April 13, 2021, 7:31 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.0
Affected Products

The following products are affected by CVE-2019-15809 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microchip atmel_toolbox
1 Athena-scs idprotect
1 Cryptsoft s\/a_idflex_v
1 Tecsec armored_card
1 Thalesgroup etoken_4300
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-15809.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-15809 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-15809 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Apr. 13, 2021

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:microchip:toolbox:00.03.11.05:*:*:*:*:*:*:* OR *cpe:2.3:a:microchip:atmel_toolbox:00.03.11.05:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-362 CWE-203
  • Initial Analysis by [email protected]

    Nov. 05, 2019

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:H/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type http://www.openwall.com/lists/oss-security/2019/10/02/2 No Types Assigned http://www.openwall.com/lists/oss-security/2019/10/02/2 Mailing List, Third Party Advisory
    Changed Reference Type https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214 No Types Assigned https://csrc.nist.gov/Projects/Cryptographic-Algorithm-Validation-Program/details?source=ECDSA&number=214 Third Party Advisory, US Government Resource
    Changed Reference Type https://eprint.iacr.org/2011/232.pdf No Types Assigned https://eprint.iacr.org/2011/232.pdf Technical Description, Third Party Advisory
    Changed Reference Type https://minerva.crocs.fi.muni.cz/ No Types Assigned https://minerva.crocs.fi.muni.cz/ Exploit, Third Party Advisory
    Changed Reference Type https://tches.iacr.org/index.php/TCHES/article/view/7337 No Types Assigned https://tches.iacr.org/index.php/TCHES/article/view/7337 Technical Description, Third Party Advisory
    Changed Reference Type https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/ No Types Assigned https://www.ssi.gouv.fr/certification_cc/bibliotheque-cryptographique-atmel-toolbox-00-03-11-05/ Product
    Added CWE NIST CWE-362
    Added CPE Configuration OR *cpe:2.3:a:microchip:toolbox:00.03.11.05:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:athena-scs:idprotect:010b.0352.0005:*:*:*:*:*:*:* *cpe:2.3:o:athena-scs:idprotect:010e.1245.0002:*:*:*:*:*:*:* *cpe:2.3:o:athena-scs:idprotect:0106.0130.0401:*:*:*:*:*:*:* *cpe:2.3:o:cryptsoft:s\/a_idflex_v:010b.0352.0005:*:*:*:*:*:*:* *cpe:2.3:o:tecsec:armored_card:010e.0264.0001:*:*:*:*:*:*:* *cpe:2.3:o:tecsec:armored_card:108.0264.0001:*:*:*:*:*:*:* *cpe:2.3:o:thalesgroup:etoken_4300:010e.1245.0002:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-15809 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-15809 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05877

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability