CVE-2020-26933

Severity Score

6.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.

Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions versiones 1.38 hasta 1.59, presenta un Control de Acceso Inapropiado durante un apagado no ordenado de TPM que usa USE_DA_USED. Una inicialización inapropiada de este apagado puede resultar en una susceptibilidad a un ataque de tipo dictionary

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-10 CVE Reserved
2020-11-18 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-665: Improper Initialization

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://trustedcomputinggroup.org/about/security	2020-12-07
https://trustedcomputinggroup.org/wp-content/uploads/TCGVRT004-Advisory-FINAL.pdf	2020-12-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Trustedcomputinggroup Search vendor "Trustedcomputinggroup"		Trusted Platform Module Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module"				2.0 Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module" and version "2.0"		revision_1.38		Affected
Trustedcomputinggroup Search vendor "Trustedcomputinggroup"		Trusted Platform Module Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module"				2.0 Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module" and version "2.0"		revision_1.40		Affected
Trustedcomputinggroup Search vendor "Trustedcomputinggroup"		Trusted Platform Module Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module"				2.0 Search vendor "Trustedcomputinggroup" for product "Trusted Platform Module" and version "2.0"		revision_1.59		Affected