CVE-2020-25082

CVSS V2 Low 1.9 CVSS V3 Low 3.8

Description

An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.

Overview

CVE ID
CVE-2020-25082

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-08-10T17:15:07

Last Modified Date
2021-08-17T17:48:06

Weakness Enumerations

CWE	URL
CWE-203	http://cwe.mitre.org/data/definitions/203.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
		AND
cpe:2.3:o:nuvoton:npct75x_firmware::::::::	1	OR	7.2.0	7.2.2.0
cpe:2.3:h:nuvoton:npct75x:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:M/Au:N/C:P/I:N/A:N

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
NONE

Base Score
1.9

Severity
LOW

Exploitability Score
3.4

Impact Score
2.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Attack Vector
PHYSICAL

Attack Compatibility
HIGH

Privileges Required
HIGH

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
3.8

Base Severity
LOW

Exploitability Score
0.2

Impact Score
3.6

References

Reference URL	Reference Tags
https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-25082
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25082

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:56:52				Added to TrackCVE
2022-12-05 07:48:20	2021-08-10T17:15Z	2021-08-10T17:15:07	CVE Published Date	updated
2022-12-05 07:48:20		2021-08-17T17:48:06	CVE Modified Date	updated
2022-12-05 07:48:20		Analyzed	Vulnerability Status	updated