CVE-2020-24455

Severity Score

6.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Missing initialization of a variable in the TPM2 source may allow a privileged user to potentially enable an escalation of privilege via local access. This affects tpm2-tss before 3.0.1 and before 2.4.3.

Una falta de inicialización de una variable en la fuente de TPM2 puede permitir a un usuario privilegiado habilitar potencialmente una escalada de privilegios por medio del acceso local. Esto afecta a tpm2-tss versiones anteriores a 3.0.1 y versiones anteriores a 2.4.3

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-08-19 CVE Reserved
2021-02-26 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-909: Missing Initialization of Resource

CAPEC

References (5)

URL	Tag	Source
https://github.com/tpm2-software/tpm2-tss/releases/tag/2.4.3	Release Notes
https://github.com/tpm2-software/tpm2-tss/releases/tag/3.0.1	Release Notes

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1902167	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO	2023-11-07
https://security.gentoo.org/glsa/202107-10	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tpm2 Software Stack Project Search vendor "Tpm2 Software Stack Project"		Tpm2 Software Stack Search vendor "Tpm2 Software Stack Project" for product "Tpm2 Software Stack"				< 2.4.3 Search vendor "Tpm2 Software Stack Project" for product "Tpm2 Software Stack" and version " < 2.4.3"		-		Affected
Tpm2 Software Stack Project Search vendor "Tpm2 Software Stack Project"		Tpm2 Software Stack Search vendor "Tpm2 Software Stack Project" for product "Tpm2 Software Stack"				>= 3.0.0 < 3.0.1 Search vendor "Tpm2 Software Stack Project" for product "Tpm2 Software Stack" and version " >= 3.0.0 < 3.0.1"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				34 Search vendor "Fedoraproject" for product "Fedora" and version "34"		-		Affected