4.7
CVE-2019-15809
- EPSS 0.11%
- Veröffentlicht 03.10.2019 14:15:11
- Zuletzt bearbeitet 21.11.2024 04:29:30
- Quelle cve@mitre.org
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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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microchip ≫ Atmel Toolbox Version00.03.11.05
Athena-scs ≫ Idprotect Version010b.0352.0005
Athena-scs ≫ Idprotect Version010e.1245.0002
Athena-scs ≫ Idprotect Version0106.0130.0401
Cryptsoft ≫ S/a Idflex V Version010b.0352.0005
Tecsec ≫ Armored Card Version010e.0264.0001
Tecsec ≫ Armored Card Version108.0264.0001
Thalesgroup ≫ Etoken 4300 Version010e.1245.0002
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.11% | 0.255 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 4.7 | 1 | 3.6 |
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
|
| nvd@nist.gov | 1.2 | 1.9 | 2.9 |
AV:L/AC:H/Au:N/C:P/I:N/A:N
|
CWE-203 Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.