VDB-180515 · CVE-2020-25082 · GCVE-0-2020-25082

Nuvoton Trusted Platform Module up to 7.2.1.x ECDSA timing discrepancy

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
1.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Nuvoton Trusted Platform Module up to 7.2.1.x. Impacted is an unknown function of the component ECDSA. The manipulation leads to timing discrepancy. This vulnerability is referenced as CVE-2020-25082. It is possible to launch the attack on the physical device. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nuvoton Trusted Platform Module up to 7.2.1.x. This issue affects some unknown processing of the component ECDSA. The manipulation with an unknown input leads to a timing discrepancy vulnerability. Using CWE to declare the problem leads to CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality.

The weakness was published 08/10/2021. It is possible to read the advisory at nuvoton.com. The identification of this vulnerability is CVE-2020-25082. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 7.2.2.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Nuvoton

Name

Trusted Platform Module

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.0
VulDB Meta Temp Score: 1.9

VulDB Base Score: 2.0
VulDB Temp Score: 1.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Timing discrepancy
CWE: CWE-208 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Trusted Platform Module 7.2.2.0

Timelineinfo

09/02/2020 🔍
08/10/2021 +342 days 🔍
08/10/2021 +0 days 🔍
08/15/2021 +5 days 🔍

Sourcesinfo

Advisory: nuvoton.com
Status: Confirmed

CVE: CVE-2020-25082 (🔍)
GCVE (CVE): GCVE-0-2020-25082
GCVE (VulDB): GCVE-100-180515

Entryinfo

Created: 08/10/2021 21:28
Updated: 08/15/2021 13:49
Changes: 08/10/2021 21:28 (37), 08/15/2021 13:44 (2), 08/15/2021 13:49 (1)
Complete: 🔍
Cache ID: 216::103